CBT CE Full Test - 2


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150 Questions MCQ Test RRB JE (Railways Junior Engineer) CBT Mock Test Series | CBT CE Full Test - 2

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CBT CE Full Test - 2 - Question 1

The process of decomposing organic waste in the presence of air is termed as

Detailed Solution for CBT CE Full Test - 2 - Question 1

Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials. Incineration and other high-temperature waste treatment systems are described as "thermal treatment". Incineration of waste materials converts the waste into ash, flue gas and heat means in the presence of air.

CBT CE Full Test - 2 - Question 2

The steel used in the manufacture of rails is

Detailed Solution for CBT CE Full Test - 2 - Question 2

Composition and metallurgy of rail steel

Carbon content of rail steel can go up to a maximum of 0.82 % and manganese content up to a maximum of 1.7 %. The normal rails are made of steel containing 0.7% C and 1% Mn, which are called as Carbon-Manganese rail steel.

CBT CE Full Test - 2 - Question 3

Who has assumed the charge as Vice Chief of the Naval Staff on 30 Jan 2019?

Detailed Solution for CBT CE Full Test - 2 - Question 3
  • Vice Admiral G Ashok Kumar, AVSM, VSM assumed charge as Vice Chief of the Naval Staff on 30 Jan 2019.
  • Kumar has held various Staff and Command assignments during his distinguished naval career spread over more than three decades.
  • He is an alumnus of National Defence Academy, Khadakvasla, Pune and was commissioned into the Executive Branch of the Indian Navy on 01 Jul 1982.
CBT CE Full Test - 2 - Question 4

Which of the following is not an indicator of air pollution?

Detailed Solution for CBT CE Full Test - 2 - Question 4

The various indicators of air pollution are:
Sulphur dioxide
Nitrogen dioxide
Ozone
Peroxyl Nitrate
Suspended particulate matter
Soiling Index

Note:
Soiling Index is the measurement of visibility interference in the atmosphere. It is also known as Smoke Index or Coefficient of Haze.

CBT CE Full Test - 2 - Question 5

If the value of the a, b, c and d in the group index method of pavement design are 20, 30, 20 and 10 respectively, then the group index value will be

Detailed Solution for CBT CE Full Test - 2 - Question 5

Concept:
Group Index of the Soil (GI)
GI = 0.2a + 0.005ac + 0.01bd
where
a = (P - 35) ≯ 40
b = (P -15) ≯ 40
c = (WL - 40) ≯ 20
d = (IP - 10) ≯ 20
where
P = Percentage fines passing from 0.074 mm sieve.
WL = Liquid Limit
IP = Plasticity Index

Calculations:
G.I. = (0.2 × 20) + (0.005 × 20 × 20) + (0.01 × 30 × 10)
G.I. = 4 + 2 + 3 = 9

CBT CE Full Test - 2 - Question 6

Which of the following alloy is used for making clocks and scientific instruments?

Detailed Solution for CBT CE Full Test - 2 - Question 6

Invar is an alloy composed of Iron, nickel, and Carbon where Iron is a major component with 63%, nickel with 36% and Carbon with 1%. Invar is an alloy used for making clocks and scientific instruments because of its property of negligible coefficient of expansion.

CBT CE Full Test - 2 - Question 7

Which browser is an inbuilt browser in windows?

Detailed Solution for CBT CE Full Test - 2 - Question 7

Web browser

  • A browser is a software application used to enable computers users to locate and access web pages
  • Browser translates the basic HTML code that allows us to see image, text video and listen to audios on the website, along with hyperlinks that let us travel to different web pages
  • The Web utilizes browsers, such as Internet Explorer or Firefox, to access web documents called web pages that are linked to each other via hyperlinks

Some commonly used web browsers are:

  • Internet Explorer: Internet Explorer (IE) is a web browser from Microsoft
  • Firefox: Firefox is a free, open-source web browser from Mozilla
  • Google Chrome: Google Chrome is a free, open source web browser developed by Google
  • Opera: Opera is a free, fast, small and standard - compliant web browser developed by the Opera Software company
  • Netscape: Netscape was the first commercial web browser
CBT CE Full Test - 2 - Question 8

Internet Explorer is a __________.

Detailed Solution for CBT CE Full Test - 2 - Question 8

Web browser: A browser is a software application used to locate, retrieve and display content of Web pages, images, video and other files. The browser contacts the Web server and requests information and Web server sends the information back to the Web browser which displays the results on the computer.

Some commonly used web browsers are:

  • Internet Explorer: Internet Explorer (IE) is a web browser from Microsoft
  • Firefox: Firefox is a free, open-source web browser from Mozilla
  • Google Chrome: Google Chrome is a free, open source web browser developed by Google
  • Opera: Opera is a free, fast, small and standard - compliant web browser developed by the Opera Software company
  • Netscape: Netscape was the first commercial web browser
CBT CE Full Test - 2 - Question 9

The typical steps in a conventional wastewater treatment follows the sequence:

Detailed Solution for CBT CE Full Test - 2 - Question 9

The typical steps in a conventional wastewater treatment follows the sequence is

Screening – Sedimentation – Aerobic oxidation – Disinfection – Discharge

The four processes of wastewater treatment are:

  1. Preliminary Treatment
    Screening (screeners, grit chambers, and skimming tanks)
  2. Primary Treatment
    Sedimentation (basically involves the process of sedimentation or settling),
    Chemical-aided Sedimentation
  3. Secondary or Biological Treatment
    Activated sludge process
    Aerated lagoons         
    Sequencing batch reactor
    Aerobic digestion
    Trickling filters
    Rotating biological contractors
  4. Tertiary or Advanced Treatment
    Solids removal
    Biological nitrogen removal
    Biological phosphorus removal
    Disinfection.
CBT CE Full Test - 2 - Question 10

Most accurate method of estimation is based on:

Detailed Solution for CBT CE Full Test - 2 - Question 10

Detailed estimate is the most accurate method and consist of working out the quantities of each of item of works and working the cost. The dimensions are taken directly from the drawings and quantities of each item are calculated. Finally abstracting and billing is done.

This is prepared in two stages.
1. Details of measurements and calculation of quantities
2. Abstract of Estimated Cost

In the first stage, the quantity, availability, and transportation of materials parameters is being analyzed.

In the second stage, the total abstract of the above analysis is shown.

CBT CE Full Test - 2 - Question 11

What is the IUPAC name of sec-Butyl chloride?

Detailed Solution for CBT CE Full Test - 2 - Question 11
  • The IUPAC name of sec-Butyl chloride is 2-Chlorobutane.
CBT CE Full Test - 2 - Question 12

The Zeolite method of water softening become costly due to presence of

Detailed Solution for CBT CE Full Test - 2 - Question 12

The process of softening of water through Zeolite method become expensive due to presence of iron and manganese compound because iron and manganese zeolite cannot be regenerated back to sodium zeolite.

CBT CE Full Test - 2 - Question 13

Identify the incorrect statement/option: The psychological effect of noise pollution is

Detailed Solution for CBT CE Full Test - 2 - Question 13

Noise pollution may cause or contribute to the following adverse effects:

  • anxiety, stress, nervousness, nausea, headache,
  • emotional instability,
  • argumentativeness,
  • increase in social conflicts
  • depression and fatigue
  • Insomnia as a result of lack of undisturbed and refreshing sleep
CBT CE Full Test - 2 - Question 14

The critical hydraulic gradient of a soil is 1.0. Its saturated unit weight is:

Detailed Solution for CBT CE Full Test - 2 - Question 14


γ= submerged unit weight of soil = γsat - γw
γw= unit weight of water
icr = 1

CBT CE Full Test - 2 - Question 15

Neoprene is a

Detailed Solution for CBT CE Full Test - 2 - Question 15

Elastomeric adhesives are based on natural rubbers, silicones, acrylonitrile butadiene (nitrile), neoprene, Butyl, polyurethane, styrene-butadiene

Thermoplastic adhesives are based on polyamides, cyanoacrylates, polyacrylates, polyvinyl acetate (PVA).

Thermosetting adhesives are based on epoxies, polyesters, polyimides and phenolics.

One-part adhesive are based on epoxies, urethanes, polyimides, acrylics, cyanoacrylates, urethanes, RTV silicones, urethanes.

CBT CE Full Test - 2 - Question 16

Generation in computer terminology is

Detailed Solution for CBT CE Full Test - 2 - Question 16

The generations of computers are characterized by a major technological development that fundamentally changed the way computers operate, resulting in smaller, cheaper, more powerful and more efficient and reliable devices.

The various generations of computers are listed below:

CBT CE Full Test - 2 - Question 17

3Ds MAX is available for

Detailed Solution for CBT CE Full Test - 2 - Question 17

3Ds Max is not available for MAC, Linux, and Android operating system.

3Ds Max can be easily run on Windows

CBT CE Full Test - 2 - Question 18

What is the purpose of conducting the resection method in the plane table surveying?

Detailed Solution for CBT CE Full Test - 2 - Question 18

Resection is a method of plane table surveying in which location of a plane table is unknown. Location of a plane table is determined by looking it to known points. It can be determined through:

  1. Two-point problem
  2. Three-point problem
CBT CE Full Test - 2 - Question 19

An explosive which contains, 65% saltpetre, 20% sulphur and 15% charcoal is:

Detailed Solution for CBT CE Full Test - 2 - Question 19

Blasting Powder contains, 65% saltpetre (KNO3), 20% sulphur and 15% charcoal.

Dynamite contains 75% nitro-glycerine, absorbed in 25% of sandy earth.

Nitrocellulose or Gun cotton made by saturating cotton with nitric acid.

Cordite contains nitro-glycerine. It is a powerful, smokeless explosive.

CBT CE Full Test - 2 - Question 20

The Curing of a concrete for long time ensures better

Detailed Solution for CBT CE Full Test - 2 - Question 20

The Curing of a concrete for long time ensures better

  1. amount of moisture for continued hydration
  2. development of strength,
  3. volume stability,
  4. resistance to freezing and thawing, and
  5. abrasion and scaling resistance
CBT CE Full Test - 2 - Question 21

Which of the following expression holds for the Poisson’s model that accounts for nonuniformity of flow that is derived by assuming the random pattern of vehicle arrivals at a specified point?

Detailed Solution for CBT CE Full Test - 2 - Question 21

The Poisson’s model that accounts for nonuniformity of flow which is derived by assuming the random pattern of vehicle arrivals at a specified point is given by

where
P(n) = probability of having n vehicles arrive in time t,
λ = average vehicle flow or arrival rate in vehicles per unit time,
t = duration of the time interval over which vehicles are counted, and
e = base of the natural logarithm (e = 2.718).

CBT CE Full Test - 2 - Question 22

A beam is hinged at end A and fixed at B. A moment M is applied at end A. What is the moment developed at end B?

Detailed Solution for CBT CE Full Test - 2 - Question 22

For end B is fixed so carry over factor is 1/2
Therefore,
Moment developed at end B,

CBT CE Full Test - 2 - Question 23

A beam of length L carries a uniformly distributed load throughout its length. In which of the following condition will the strain energy be maximum?

Detailed Solution for CBT CE Full Test - 2 - Question 23


Hence, maximum strain energy is for Cantilever beam.

CBT CE Full Test - 2 - Question 24

The amount of water required to fill up the pore spaces in soil particles by replacing all air held in pore spaces is known as

Detailed Solution for CBT CE Full Test - 2 - Question 24

Saturation capacity: The amount of water required to fill up the pore spaces in soil particles by replacing all air held in pore spaces is known as saturation capacity.

Field capacity: Field Capacity is the amount of soil moisture or water content held in the soil after excess water has drained away and the rate of downward movement has decreased.

Available moisture: The difference in water content of the soil between field capacity and permanent wilting is known as available moisture.

CBT CE Full Test - 2 - Question 25

Two plates of thickness 10 mm and 12 mm are connected together with a fillet weld. What is the minimum size of fillet weld?

Detailed Solution for CBT CE Full Test - 2 - Question 25

As per IS: 800 - 2007, Clause 10.5.2.3, Table 21

CBT CE Full Test - 2 - Question 26

Which virus infects the important files of MS word?

Detailed Solution for CBT CE Full Test - 2 - Question 26

A virus is a program that can infect other programs by modifying them to include a possibly evolved copy of itself.

Some of the common types of viruses are:

  • Boot Sector Virus: A boot sector virus displaces the boot record and copies itself to the boot sector i.e. where the program to boot the machine is stored. 
  • File Virus: A file virus generally attacks executable files. 
  • Macro Virus: The virus infects an important file of MS word. As soon as the application is opened the virus gets activated. It damages the formatting of documents and may not even allow the editing or saving of documents 
  • Trojan Horse: It is a code hidden in games or spreadsheets. Its main objective is to cause harm to the data. They can create a bad sector on the disk, destroy file allocation tables and cause the system to hang.
  • Worm: It is a program capable of replicating itself on a computer network. It travels from one computer to another across communication links. They generally disrupt the routine services. 
CBT CE Full Test - 2 - Question 27

Wheel Barrow is an equipment used in a concrete project for

Detailed Solution for CBT CE Full Test - 2 - Question 27

Wheelbarrow, truck mixer, dumper truck, belt conveyor, pipeline etc. are the various ways concrete is transported to the construction site.

A wheelbarrow is employed for hauling concrete in the longer distance in case of concrete road construction. If the distance is long or ground is rough it is likely that the concrete gets segregated due to vibration. To avoid this, wheelbarrows are provided with the pneumatic wheel, which helps in absorbing these vibrations.

CBT CE Full Test - 2 - Question 28

When the Adiabatic Lapse Rate (ALR) is less than the Environmental Lapse Rate (ELR), then the prevailing environmental lapse rate is called as

Detailed Solution for CBT CE Full Test - 2 - Question 28

When
ELR > ALR – Superadiabatic lapse rate – Unstable Environment
ELR < ALR – Sub – adiabatic lapse rate – Stable Environment
ELR = ALR – Neutral Condition
ELR is negative – Inversion
Adiabatic Lapse Rate (ALR) is - 9.8oC per 1000 m rise

CBT CE Full Test - 2 - Question 29

The process of adding a finely ground, fully hydrated Portland cement to the fresh concrete in order to make high strength concrete is called

Detailed Solution for CBT CE Full Test - 2 - Question 29

The process of adding a finely ground, fully hydrated Portland cement to the fresh concrete in order to make high strength concrete is called seeding.

There are some more special methods of making high strength concrete and are given below

  1. Revibration
  2. High speed slurry mixing;
  3. Use of admixtures
  4. Inhibition of cracks
  5. Sulphur impregnation;
  6. Use of cementitious aggregates
CBT CE Full Test - 2 - Question 30

For construction of structures under water, the type of lime used is ______

Detailed Solution for CBT CE Full Test - 2 - Question 30

Hydraulic Lime:

This lime contains clay and some amount of ferrous oxide. It sets under water and hence also known as water lime. Depending upon the percentage of clay Indian Standard has divided hydraulic lime in three classes namely:
Class A – Eminently hydraulic
Class B – Semi Hydraulic
Class C – Non-hydraulic (or Fat lime)

CBT CE Full Test - 2 - Question 31

As a result of greenhouse effect, the average temperature of the earth’s atmosphere is gradually increasing. This is called _____.

Detailed Solution for CBT CE Full Test - 2 - Question 31

As a result of the greenhouse effect, the average temperature of the earth’s atmosphere is gradually increasing. This is called Global warming. The exchange of incoming and outgoing radiation that warms the surface of Earth is known as the greenhouse effect. The greenhouse gases include carbon dioxide, methane, water vapors, nitrous oxide, and other gases.

CBT CE Full Test - 2 - Question 32

If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is

Detailed Solution for CBT CE Full Test - 2 - Question 32

The degree of static indeterminacy of a rigid-jointed space frame is
Ds = (6m + r) - 6j

Where, m = number of members in the joint, r = number of equilibrium equations and j = number of joints

When,
Ds = 0, then the truss is stable and determine, such trusses is called perfect trusses.

Ds > 0, then the truss is stable but indeterminate or over stiff

Ds < 0, then the truss is unstable or deficient.

Hence, Ds = (6m + r) - 6j < 0, the truss is unstable.

CBT CE Full Test - 2 - Question 33

The brick which is light in weight, reduce the transmission of heat, sound and dampness, is known as

Detailed Solution for CBT CE Full Test - 2 - Question 33

Hollow or Cellular or Cavity bricks:

They are light in weight about one-third the weight of the ordinary brick of the same size.

They also reduce the transmission of heat, sound and damp.

Such bricks have wall thickness of about 20 mm to 25 mm.

They are prepared from special homogeneous clay.

These bricks can be laid almost about four times as fast as the ordinary bricks.

They are used in the construction of brick partitioning.

CBT CE Full Test - 2 - Question 34

Which of the following is unstratified?

Detailed Solution for CBT CE Full Test - 2 - Question 34

Unstratified Rocks:

These rocks are not stratified. They possess crystalline and compact grains. They cannot be split into a thin slab. Granite, trap, marble etc. are the examples of this type of rocks.

Stratified Rocks:

These rocks have a layered structure. They possess planes of stratification or cleavage. They can be easily split along these planes. Sandstones, limestones, slate etc. are the examples of this class of stones.

CBT CE Full Test - 2 - Question 35

For a propped cantilever beam of length L carrying a uniformly distributed load w, as shown in figure, the reaction at point A will be

Detailed Solution for CBT CE Full Test - 2 - Question 35

Deflection of end B = 0
(Downward deflection due to uniformly distributed load) – (upward deflection due to RB) = 0

CBT CE Full Test - 2 - Question 36

The Black coloured soil, which is sticky and highly plastic in nature is

Detailed Solution for CBT CE Full Test - 2 - Question 36
  1. Gumbo: This is a black coloured soil, which is sticky and highly plastic in nature
  2. Bentonite: The clay formed by the chemical weathering of volcanic ash
  3. Tuff Soil: This is a fine-grained soil slightly cemented volcanic ash
  4. Marl: This material is a combination of clay, loam and calcareous sands
  5. Peat: Fibrous aggregate with decomposed fragments of vegetable matter
  6. Loam: This material is a combination of silt, clay and sand in definite proportion
CBT CE Full Test - 2 - Question 37

The phenomenon of metal which allows it to deform continuously at slow rate without any further increase in stress is known as

Detailed Solution for CBT CE Full Test - 2 - Question 37

Creep: The phenomenon of metal which allows it to deform continuously at slow rate without any further increase in stress is known as creep.

Fatigue: It is the progressive and localized structural damage that occurs when a material is subjected to cyclic loading.

Resilience: resilience is the ability of a material to absorb energy when it is deformed elastically, and release that energy upon unloading.

Plasticity: Ability of certain solids to flow or to change shape permanently when subjected to stresses of intermediate magnitude between those producing temporary deformation, or elastic behavior, and those causing failure of the material, or rupture

CBT CE Full Test - 2 - Question 38

IRC recommends the value for coefficient of lateral friction as

Detailed Solution for CBT CE Full Test - 2 - Question 38

IRC suggests the coefficient of lateral friction as 0.15 and the coefficient of longitudinal friction as 0.35-0.4 depending on the speed.

The choice of the value of coefficient of longitudinal and lateral friction is a very complicated issue since it depends on many variables.

CBT CE Full Test - 2 - Question 39

Choose the option which is INCORRECT about the term friction.

Detailed Solution for CBT CE Full Test - 2 - Question 39

Friction is the resistance to motion of one object moving relative to another.

  • It opposes the motion between the surfaces in contact with each other
  • It leads to a decrease in the velocity of the object
  • It depends on the nature of the surfaces
  • It produces heat
CBT CE Full Test - 2 - Question 40

While calculating the sight distance, the driver’s eye above road surface is assumed as

Detailed Solution for CBT CE Full Test - 2 - Question 40

As per IRC the distance between a moving vehicles with the eye level of the driver at a height of 1.2 m and an object of 0.15 m, so that no collision occurs in case a situation arises to stop the vehicle.

CBT CE Full Test - 2 - Question 41

The plan of a building is in the form of a square with centreline dimensions of outer walls as 9.6 m × 14.6 m. If the thickness of the wall in superstructure is 0.40 m, then its plinth area is:

Detailed Solution for CBT CE Full Test - 2 - Question 41

Given:
Dimensions of outer walls = 9.6 m × 14.6 m.
Thickness of the wall = 0.40 m

Calculations:
Plinth area of the building 
Plinth area of the building = (10 × 15) = 150 m2

CBT CE Full Test - 2 - Question 42

Calculate the runoff (cm) from a rainfall of 3 hours. The intensity of the rainfall is 2 cm/hr. The evaporation and infiltration losses are 8 mm and 16 mm respectively.

Detailed Solution for CBT CE Full Test - 2 - Question 42

Rainfall intensity = 2 cm/hr
Rainfall depth(cm) = 2 cm/hr × 3 hr = 6 cm
Runoff depth = Rainfall depth – Evaporation losses – infiltration losses
Runoff depth = 6 cm – 0.8 cm – 1.6 cm
Runoff depth = 3.6 cm

CBT CE Full Test - 2 - Question 43

Which of the following is NOT true with respect to Kirchhoff's first law?

Detailed Solution for CBT CE Full Test - 2 - Question 43
  • Kirchhoff's second law is called loop law.
  • According to Kirchhoff's first law, the sum of currents which are meeting at a point (junction) in a circuit is always 0. It is therefore also called junction law.
  • According to the sign convention adopted for this law, the current flowing towards the junction is taken as positive and the current leaving the junction is taken as negative.
  • These two laws were given by Kirchhoff in 1842.
CBT CE Full Test - 2 - Question 44

What is the main function of alumina in brick work?

Detailed Solution for CBT CE Full Test - 2 - Question 44

Alumina
A good brick earth should contain 20 – 30% of Alumina.

Alumina imparts plasticity to the earth, so that it can be moulded.
If it is excess raw bricks shrink and wrap during drying and burning.

CBT CE Full Test - 2 - Question 45

The correct sequence of different layers of the atmosphere from the surface of the Earth upwards is

Detailed Solution for CBT CE Full Test - 2 - Question 45

Structure of the atmosphere
The atmosphere is divided into five layers starting from the earth's surface:

  1. Troposphere (0 - 18 km): This is the most important layer of the atmosphere. The air breath exists here. All the weather changes like rainfall, fog, and hailstorm occur in this layer.
  2. Stratosphere (18 - 50 km): It is free from clouds which makes it the most ideal layer for flying Aeroplanes. It contains a layer of ozone gas which protects from the harmful effect of the sun rays.
  3. Mesosphere (50 - 85 km): It is the third layer of the atmosphere. Temperature drops to about -95°C.
  4. Thermosphere (85 - 500 km): In this layer, the temperature rises very rapidly with increasing height. The ionosphere is a part of this layer. It helps in radio transmission.
  5. Exosphere (500 - 1600 km): The uppermost layer of the atmosphere is called exosphere. It is very thin air. Temperature is very high due to direct solar radiation. Light gases like Helium and Hydrogen float into space from here.

The Exosphere is the uppermost layer of the atmosphere.
CBT CE Full Test - 2 - Question 46

A 24 mm diameter bolt of grade 4.6 is in double shear, the shearing strength of bolt will be (assume no threads in the shear planes)?

Detailed Solution for CBT CE Full Test - 2 - Question 46

Concept:
Shearing strength of all bolts (Ps)
Where n is number of bolts, d is diameter of bolt

m = 1 for single shear and m = 2 for double shear
Here m = 2 because of double shear in double cover butt joint

(fub is ultimate stress of bolt)

Calculations:
For 4.6 grade bolts, fub = 400 MPa, fyb = 240 MPa


Ps = 167.2 kN

CBT CE Full Test - 2 - Question 47

Who has won the Men's singles final​ in the US Open Tennis 2018?

Detailed Solution for CBT CE Full Test - 2 - Question 47
  • In the US Open Tennis, Novak Djokovic of Serbia won the Men's singles final.
  • He defeated Juan Martin del Potro of Argentina. It was Djokovic's 14th Grand Slam title and the third US Open title.
  • With this win, he has equaled Pete Sampras's mark of 14 Grand Slams.
CBT CE Full Test - 2 - Question 48

Which among the following indicates the orientation of sub-shells in an atom?

Detailed Solution for CBT CE Full Test - 2 - Question 48
  • The quantum number defines an electron completely in an atom. 
  • There are four types of quantum number - Principal Quantum Number, Azimuthal Quantum Number, Magnetic Quantum Number and Spin Quantum Number. 
  • Principal Quantum Number describes the size, shape and energy of the shell to which an electron belongs whereas Azimuthal Quantum Number determines the shape of the electron cloud and the number of sub-shells in a shell. 
  • Magnetic Quantum Number determines the orientation of sub-shells whereas the spin quantum number represents the direction of the electron spin. 
CBT CE Full Test - 2 - Question 49

Which of the following is the information retrieval service?

Detailed Solution for CBT CE Full Test - 2 - Question 49
  • The internet is a globally connected network system that transmits data via various types of media; Sometimes it is referred to as a ‘network of networks’
  • The World Wide Web, or simply web, is a way of accessing information over the medium of the internet
  • A web browser is a software application for accessing information on the World Wide Web
CBT CE Full Test - 2 - Question 50

Which among the following is the capital of Finland?

Detailed Solution for CBT CE Full Test - 2 - Question 50

Helsinki is the capital of Finland.

CBT CE Full Test - 2 - Question 51

While negotiating a curve, the radius of the curve is given by
(where W is the weight of the vehicle, P = centrifugal force, V = velocity of the vehicle and g = acceleration due to gravity)

Detailed Solution for CBT CE Full Test - 2 - Question 51

While negotiating a horizontal curve, the relation between the W is the weight of the vehicle, P = centrifugal force, V = velocity of the vehicle, g = acceleration due to gravity, and radius of the curve is given by:

Therefore, Radius of the curve,  

CBT CE Full Test - 2 - Question 52

Light can travel in vacuum but not sound, because ________.

Detailed Solution for CBT CE Full Test - 2 - Question 52
  • Light can travel in a vacuum because the light is electromagnetic in nature which requires no medium as electric fields and magnetic fields constantly generate each other as the wave propagates.
  • Sound waves require a medium to travel. The speed of sound is faster in solid materials, slower in liquids and slowest in gases.
  • The speed of light in a vacuum is commonly given the symbol c. It is a universal constant that has the value c = 3 x 108 m/second.
CBT CE Full Test - 2 - Question 53

The number of cubic meters of the fill that can be constructed at a void ratio of 0.5 from 1000 m3 of borrow pit of soil that has a void ratio of 0.80 will be

Detailed Solution for CBT CE Full Test - 2 - Question 53

 

Volume of solids remain same, 

CBT CE Full Test - 2 - Question 54

Which law of thermodynamics defines the concept temperature?

Detailed Solution for CBT CE Full Test - 2 - Question 54

The Zeroth law of thermodynamics defines temperature. It states that “If two systems are in thermal equilibrium with the third system, then they are in thermal equilibrium with each other.”
Zeroth law – concept of temperature
First law – concept of internal energy
Second law – concept of entropy

CBT CE Full Test - 2 - Question 55

The unit measurement for concrete work in RCC is in

Detailed Solution for CBT CE Full Test - 2 - Question 55

The principle of units of measurements normally consists the following:
a) Single units work like doors, windows, trusses etc., are expressed in numbers.
b) Works consists linear measurements involve length like cornice, fencing, hand rail, bands of specified width etc., are expressed in running metres (m).
c) Works consist of areal surface measurements involve area like plastering, white washing, partitions of specified thickness etc., and are expressed in square meters (m2)
d) Works consists cubical contents which involve volume like earth work, cement concrete, Masonry etc. are expressed in Cubic metres (m3).

CBT CE Full Test - 2 - Question 56

The levelling operation that removes humps and hollows and gives a true and uniform concrete in the finishing of concrete surface is called

Detailed Solution for CBT CE Full Test - 2 - Question 56

The finishing of the concrete surface is finally achieved by the following operations:

1. Curing: It is the process of hardening the concrete mixes by keeping its surface moist for a certain period, in order to enable the concrete to gain more strength.

2. Screeding: it is the levelling operation that removes humps and hollows and gives a true and uniform concrete surface.

3. Floating: It is the process of removing the irregularities from the surface of concrete left after screening.

4. Trowelling: It is the final operation of finishing the concrete surface. It is performed where a smooth and dense surface is required.

CBT CE Full Test - 2 - Question 57

A pipe of diameter 100 cm and length 10000 m connects two small reservoir having difference of water level as 32 m. The discharge through the pipe will be (Take π2g = 100 m/s2 and coefficient of friction (f) = 0.25)

Detailed Solution for CBT CE Full Test - 2 - Question 57

In the case of single pipe connects to two reservoirs, the head loss in the pipe

Where,
f = coefficient of friction
f' = friction factor = 4 × f
L = length of pipe
V = velocity of fluid flowing through the pipe
Q = discharge through the pipe
D = Diameter of the pipe

Calculations:
Diameter of the pipe = 100 cm = 1 m and π2g = 100 m/s2
Head loss in the pipe 

CBT CE Full Test - 2 - Question 58

What is the CORRECT option for a rigid body to be in the equilibrium when the body is under the action of three forces?

Detailed Solution for CBT CE Full Test - 2 - Question 58

For a rigid body to be in equilibrium when the body is under the action of three forces:
A solid body under three parallel forces will be in equilibrium if:
(i). The sum of the forces acting in one direction must be equal to the sum of the forces acting opposite in direction.
(ii). The algebraic sum of the moments of all forces about any point on the body must be zero.
A solid body applied to three forces whose lines of action are not parallel, is in equilibrium if the three following conditions satisfies:
(i). The lines of action are coplanar (in the same plane).
(ii). The lines of action are meeting at a point.
(iii). The vector sum of these forces is equal to the zero vector.

CBT CE Full Test - 2 - Question 59

Which of the following method is not classified as a force method?

Detailed Solution for CBT CE Full Test - 2 - Question 59

The moment distribution method is displacement method.

Force method
Theorem of three moments
Method of consistent deformation
Castiglione’s theorem
Compatibility method

Displacement method
Moment distribution method
Slope deflection method
Kani’s method
Stiffnens matrix method

CBT CE Full Test - 2 - Question 60

Which one of the following air pollutants are responsible for photochemical smog?

Detailed Solution for CBT CE Full Test - 2 - Question 60

Photochemical smog is the chemical reaction of sunlight, nitrogen oxides and volatile organic compounds in the atmosphere, which leaves airborne particles and ground-level ozone.

Photochemical smog depends on primary pollutants as well as the formation of secondary pollutants.

These primary pollutants include oxides of nitrogen, particularly nitric oxide (NO) and nitrogen dioxide (NO2), and volatile organic compounds.

The relevant secondary pollutants include peroxyl-acyl nitrates (PAN), tropospheric ozone, and aldehydes.

An important secondary pollutant for photochemical smog is ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight.

CBT CE Full Test - 2 - Question 61

The pre-jump and post-jump depth in a rectangular channel during a hydraulic jump are 0.25 m and 1.25 m, then the head loss in the jump is

Detailed Solution for CBT CE Full Test - 2 - Question 61

Head loss during a hydraulic jump

where y1 = pre-jump depth and y2 = post-jump depth

CBT CE Full Test - 2 - Question 62

The force in the member AB will be

Detailed Solution for CBT CE Full Test - 2 - Question 62


Since at joint C, BC and CD are colinear and no external force acting joint C, therefore
FAC = 0
∴ FAB cos 30° + FAD cos 30° - 10 KN = 0
(∵ FAB = FAD)
∴ 2FAB cos 30° = 10 KN

CBT CE Full Test - 2 - Question 63

Which of the following is CORRECT statement for critical flow through open channel?

Detailed Solution for CBT CE Full Test - 2 - Question 63

The characteristics of critical flow are:

(i) The specific energy and specific force are minimum for the given discharge.
(ii) The Froude number is equal to unity.
(iii) For a given specific energy the discharge is maximum at the critical flow.
(iv) The velocity head is equal to half the hydraulic depth in a channel of small slope.
(v) Flow at the critical state is unstable.

CBT CE Full Test - 2 - Question 64

The magnetic bearing of a line PQ is S 35o 30’ E. If the magnetic declination is 7o 00’ W, then the true bearing of the line PQ will be

Detailed Solution for CBT CE Full Test - 2 - Question 64

The position of true meridian, magnetic meridian, and the line have been shown in the figure below:

Since the declination is to the west, the magnetic meridian will be to the west of true meridian.
Hence, true meridian = S 35o 30’ E + 7o 00’ = S 42o 30’ E

CBT CE Full Test - 2 - Question 65

The term Municipal Solid Waste (MSW) is generally used to describe:

Detailed Solution for CBT CE Full Test - 2 - Question 65

Municipal solid waste includes commercial and domestic wastes generated in municipal or notified areas in either solid or semi-solid form excluding industrial hazardous wastes but including treated bio-medical wastes.

Municipal solid waste (MSW), commonly known as trash or garbage in the United States and rubbish in Britain, is a waste type consisting of everyday items that are discarded by the public. 

CBT CE Full Test - 2 - Question 66

Under certain limit, the bigger size of aggregate will

Detailed Solution for CBT CE Full Test - 2 - Question 66

Size of aggregate affecting workability of concrete:

  1. The bigger the size of the aggregate, the less is the surface area of the aggregate
  2. Therefore, less amount of water is required for wetting the surface
  3. Also, less paste is required for lubricating the surface to reduce internal friction
  4. Hence, for a given quantity of water and paste, bigger size of aggregates will give higher workability
CBT CE Full Test - 2 - Question 67

Weisbach triangle method is used for

Detailed Solution for CBT CE Full Test - 2 - Question 67

Weisbach triangle method is used for connecting two ends of an underground tunnel as shown in the figure below.

In this method two wires are suspended vertically in a shaft forming a very small base line. The principal is to obtain bearing and coordinate of the wire base relative to the surface base. These values can then be transferred to the underground base.

CBT CE Full Test - 2 - Question 68

The maximum depth of neutral axis for a beam with ‘400 mm’ as the effective depth, in limit state method of design for Fe 415 steel is

Detailed Solution for CBT CE Full Test - 2 - Question 68


For fy = 415 N/mm2xu, max = 0.48dand Es = 2 × 105 N/mm2
xu, max = 0.48d = 0.48 x 400 = 192 mm
for fy = 250 N/mm2, xu, max = 0.53d and
For fy = 500 N/mm2, xu, max = 0.46d

CBT CE Full Test - 2 - Question 69

Which of the following is not an assumption of Bernoulli’s theorem?

Detailed Solution for CBT CE Full Test - 2 - Question 69

Assumptions of Bernoulli’s theorem:

  • The fluid is Ideal
  • The flow is steady
  • The flow is irrotational
  • The fluid is incompressible
CBT CE Full Test - 2 - Question 70

The triangular shaped masonry work, provided at the end of a sloped roof is called as

Detailed Solution for CBT CE Full Test - 2 - Question 70

Gable:
The triangular shaped masonry work provided at the end of a sloped roof is called as gable.

Arch:
Arch is structural construction of masonry construction of wedge-shaped blocks of stone or brick arranged in the form of curve supporting wall.

Jambs:
Jambs are the vertical sides of a finished opening of a door, window etc.

Parapet:
Parapet is the portion of low height wall constructed along the edge of roof to protect the users.

CBT CE Full Test - 2 - Question 71

Under fatigue stresses, which one of the following joint fails earlier?

Detailed Solution for CBT CE Full Test - 2 - Question 71

Under fatigue stresses, welded connection fails suddenly. So welded connection is not preferred under fatigue stress.

CBT CE Full Test - 2 - Question 72

In a meter gauged railway track, the ruling gradient is 1 in 200 on a particular section of the track. The allowable ruling gradient on a 3o curve in the track will be

Detailed Solution for CBT CE Full Test - 2 - Question 72

According to Indian Railway provision for grade compensation for curvature is given by
0.04% per degree of curve for Broad Gauge (B.G.)
0.03% per degree of curve for Meter Gauge (M.G.)
0.02% per degree of curve for Narrow Gauge (N.G.)
Allowable ruling gradient after grade compensation will be

CBT CE Full Test - 2 - Question 73

Which of the following fuels causes minimum environmental pollution?

Detailed Solution for CBT CE Full Test - 2 - Question 73

Hydrogen fuel is a zero-emission fuel when burned with oxygen (if one considers water not as an emission) or used in a contained cell (allowing to react galvanically) also capable of 'reversing' the reaction if needed.

CBT CE Full Test - 2 - Question 74

A soil sample with void ratio of 0.45 is having water content of 10% and the specific gravity of soil solid is 2.7. The air content in the soil sample will be

Detailed Solution for CBT CE Full Test - 2 - Question 74

For a given soil sample,
S × e = w × G
where
S = degree of saturation
e = void ratio
w = water content
G = specific gravity of the soil solid

S = 0.6
Air content + Degree of saturation = 1
ac + S = 1
ac = 1 − S = 1 − 0.6 = 0.4
ac = 40%

CBT CE Full Test - 2 - Question 75

If the plates of a capacitor are brought closer to each other, what will be the effect on capacitance?

Detailed Solution for CBT CE Full Test - 2 - Question 75
  • If the two plates are brought closer to each other, the capacitance of the system will increase.
  • This can be proved from the expression, C = (ε0A)/d 
  • Where ε0 is the electric constant, A is area of plate and d is distance between the plates.
  • Hence the distance is inversely proportional to the capacitance and bringing the plates closer will mean reducing the distance and in effect increasing the capacitance of the system.
CBT CE Full Test - 2 - Question 76

As per IS 1942 : 1970, the chain of length 30 m, having ______ number of links.

Detailed Solution for CBT CE Full Test - 2 - Question 76

As per IS 1942:1970, the surveying chain are categories into four different length;

  • Chain of length 5 m (25 links)
  • Chain of length 10 m (50 links)
  • Chain of length 20 m (100 links)
  • Chain of length 30 m (150 links)
CBT CE Full Test - 2 - Question 77

Where will the deleted files be stored?

Detailed Solution for CBT CE Full Test - 2 - Question 77

In computing, the Trash (also known as the Recycle Bin in Windows) is the temporary storage for files that have been deleted in a file manager by the user, but not yet permanently erased from the file system.

Typically, a recycle bin is presented as a special file directory to the user, allowing the user to browse deleted files, undelete those that were deleted by mistake, or delete them permanently (either one by one, or by the "Empty Trash" function).

CBT CE Full Test - 2 - Question 78

Which of the following shows the CORRECT graph for the stress-strain curve for an ideal elastic strain hardening material?

Detailed Solution for CBT CE Full Test - 2 - Question 78

The stress- strain diagrams for different type of materials are given below:

CBT CE Full Test - 2 - Question 79

The diameter of circular sewer laid at a slope of 1 in 900 is 4 m. The flow rate of the sewer when running half full will be (take Manning’s coefficient, n = 0.02)

Detailed Solution for CBT CE Full Test - 2 - Question 79


Depth of flow = D/2
Wetted area of the sewer (A) 
Wetted perimeter (P) = πD/2
Hydraulic mean radius (R) = A/P = D/4
Velocity or flow rate through the sewer, 

CBT CE Full Test - 2 - Question 80

The very finely ground cement with high C3S content designed to develop high early strength required for manufacture of concrete sleeper for Indian Railways is called as

Detailed Solution for CBT CE Full Test - 2 - Question 80

IRS-T 40 Special Grade Cement:

IRS-T-40 special grade cement is manufactured as per specification laid down by ministry of Railways under IRST40: 1985.

It is a very finely ground cement with high C3S content designed to develop high early strength required for manufacture of concrete sleeper for Indian Railways.

The other uses of this cement are:

  • prestressed concrete elements,
  • high rise buildings,
  • high strength concrete
CBT CE Full Test - 2 - Question 81

Bitumen grade 80/100 indicates that under the standard test conditions, penetration value of bitumen would vary from:

Detailed Solution for CBT CE Full Test - 2 - Question 81

Penetration value is a measure of hardness or consistency of bituminous material. It is the vertical distance traversed or penetrated by the point of a standard needle into the bituminous material under specific conditions of load, time and temperature. This distance is measured in one-tenth of a millimeter. Bitumen grade 80/100 indicates the penetration value of bitumen from 8 mm to 10 mm.

CBT CE Full Test - 2 - Question 82

Batching error means inaccuracy in the quantity of

Detailed Solution for CBT CE Full Test - 2 - Question 82
  • Batching is the process of measuring concrete mix ingredients either by volume or by mass and introducing them into the mixture
  • Traditionally batching is done by volume but most specifications require that batching be done by mass rather than volume
  • Inaccuracy in the measurement of the quantity of cement, aggregates and water leads to an error.
CBT CE Full Test - 2 - Question 83

Which of the following prizes is given for fiction?

Detailed Solution for CBT CE Full Test - 2 - Question 83

The Man Booker Prize for Fiction is a literary prize awarded each year for the best original novel written in the English language and published in the UK.

CBT CE Full Test - 2 - Question 84

If a group of 10 friction piles are designed to carry a total load capacity of 1225 kN and the load carrying capacity of a single pile in clayey strata is 155 kN, then the efficiency of the pile group is

Detailed Solution for CBT CE Full Test - 2 - Question 84

Load carrying capacity of a single pile = 155 kN
Total load carrying capacity of pile group = 1225 kN
The efficiency of group pile 

CBT CE Full Test - 2 - Question 85

Area of the side face reinforcement of a beam where the depth of web exceeds 750 mm shall be not less than:

Detailed Solution for CBT CE Full Test - 2 - Question 85

Shear reinforcements in the form of vertical stirrups and or bent up longitudinal bars

Side face reinforcement in the web of the beam provided when the depth of the web in a beam exceeds 750 mm shall not be less than 0.1% of the web area, distributed equally on two faces at a spacing not exceeding 300 mm or web thickness, whichever is less.

CBT CE Full Test - 2 - Question 86

The pile which can be driven on an angle is called as

Detailed Solution for CBT CE Full Test - 2 - Question 86

Batter Pile:

The pile which can be driven on an angle is called as batter pile.

The ability to install driven piles on an angle, or batter, gives them a distinct advantage with respect to their ability to carry lateral loads.

Batter piles carry lateral loads primarily in axial compression and/or tension while vertical deep foundations carry lateral loads in shear and bending.

CBT CE Full Test - 2 - Question 87

Which method is used for the preparation of a contour plan for a route survey?

Detailed Solution for CBT CE Full Test - 2 - Question 87

Uses of indirect method of contouring:
Cross section method: This method is suitable for route survey, when cross sections are taken transverse to the longitudinal section.

Square or grid method: The method is used for large scale mapping and at average precision.

Cross section method Procedure:

  • In these sections, a base line, centre line or profile line is considered
  • Cross sections are taken perpendicular to this line at regular intervals
  • A temporary bench mark is set up near the site
  • Staff readings are taken along the base line and the cross sections
  • The readings are entered in the level book the base line and the cross sections should also be mentioned
  • The RL of each of the points calculated
  • Then the base line and cross sections are plotted to a suitable scale
  • Subsequently the RLs of the respective points are noted on the map, after which the required contour line is drawn by interpolation
CBT CE Full Test - 2 - Question 88

Strait of Malacca separates which two land masses? 

Detailed Solution for CBT CE Full Test - 2 - Question 88
  • Strait of Malacca is a narrow stretch of water which separates the Malay Peninsula and Indonesian Island of Sumatra.
  • It was named after the Malacca Sultanate which ruled between 1400 and 1511 over a group of islands.
CBT CE Full Test - 2 - Question 89

What is the process of slow cooling of hot glass called?

Detailed Solution for CBT CE Full Test - 2 - Question 89
  • Annealing is one of the major processes in the manufacture of glass.
  • It is a controlled slow cooling process of heat treatment of glass.
  • It helps in strengthening the glass and relieving the stress.
CBT CE Full Test - 2 - Question 90

Where is the largest population of Bhil Tribe found in India?

Detailed Solution for CBT CE Full Test - 2 - Question 90

The Bhil are an indigenous tribe in the Kolarian group and were the earliest settlers in India. According to the 2011 Census of India, Bhil is the most populous tribe in Madhya Pradesh with a total population of 4,618,068, constituting 37.7 per cent of the total ST population.

CBT CE Full Test - 2 - Question 91

Ascending order according to width is

Detailed Solution for CBT CE Full Test - 2 - Question 91


So the order will be,

Carrigeway < Formation way < Right of way

CBT CE Full Test - 2 - Question 92

The adverse effect(s) of acid rain is(are)

Detailed Solution for CBT CE Full Test - 2 - Question 92

When the quantity of acids in the raining water is more than the average, then such rain is called 'Acid rain'.

We are aware that normally rainwater has a pH of 5.6.  When the pH of the rainwater drops below 5.6, it is called acid rain.

Acid rain refers to the ways in which acid from the atmosphere is deposited on the earth’s surface. Oxides of nitrogen and sulphur which are acidic in nature can be blown by wind along with solid particles in the atmosphere and finally settle down either on the ground as dry deposition or in water, fog and snow as wet deposition.

Acid rain is a byproduct of a variety of human activities that emit the oxides of sulphur and nitrogen in the atmosphere. As mentioned earlier, burning of fossil fuels (which contain sulphur and nitrogenous matter) such as coal and oil in power stations and furnaces or petrol and diesel in motor engines produce sulphur dioxide and nitrogen oxides.

SO2 and NO2 after oxidation and reaction with water are major contributors to acid rain because polluted air usually contains particulate matter that catalyses the oxidation.

2SO2 (g) + O2 (g) + 2H2O (l) → 2H2SO4 (aq)
4NO2 (g) + O2 (g)+ 2H2O (l) → 4HNO3 (aq)

The bad effects of acid rain

  • When acid rain falls and flows as groundwater to reach rivers, lakes etc, it affects plants and animal life in the aquatic ecosystem
  • Acid rain is harmful to agriculture, trees and plants as it dissolves and washes away nutrients needed for their growth
  • It causes respiratory ailments in human beings and animal
  • It may also cause corrosion in many buildings bridges, monuments, fencing etc
  • It causes irritation in the eyes and skin of human beings
  • This rain reduces the lustre of the metals too
  • Acid rain damages buildings and other structures made of stone or metal
  • The Taj Mahal in India has been affected by acid rain
CBT CE Full Test - 2 - Question 93

An air vessel is usually provided at the summit of a syphon in order to

Detailed Solution for CBT CE Full Test - 2 - Question 93

A syphon is a long-bent pipe used to connect two reservoirs at different levels through a high ridge. The highest point of the syphon is called the summit.

The interruption such as cavitation in the flow is caused by the pressure difference. Thus, an air vessel is provided at the summit in order to avoid this interruption in the flow and to get continuous flow.

CBT CE Full Test - 2 - Question 94

The amount of bleaching powder containing 50% available chlorine to be added to treat one litre of such water sample is 0.5 mg. The chlorine demand of the water sample will be

Detailed Solution for CBT CE Full Test - 2 - Question 94

Chlorine demand = Amount of Bleaching powder 
Chlorine demand 
Chlorine demand = 0.25 mg/L

CBT CE Full Test - 2 - Question 95

When water is flowing through some confined aquifer, the spring formed is known as:

Detailed Solution for CBT CE Full Test - 2 - Question 95

Artesian Springs occur when the groundwater, under pressure, finds its way to the land surface. The spring flows because the pressure in the aquifer (water bearing soil or rock), which is covered by a confining layer (clay or other impervious material), is greater than atmospheric pressure at the land.

CBT CE Full Test - 2 - Question 96

With which game is the 'Agha Khan Cup' associated?

Detailed Solution for CBT CE Full Test - 2 - Question 96

‘Agha Khan Cup’ is associated with the game of Hockey whereas Agha Khan Gold Cup is associated with Football.

CBT CE Full Test - 2 - Question 97

The range of the optimum moisture for the standard proctor test for clayey soil is

Detailed Solution for CBT CE Full Test - 2 - Question 97

Range of optimum water content

CBT CE Full Test - 2 - Question 98

Maximum strain energy that can be stored in a body is known as

Detailed Solution for CBT CE Full Test - 2 - Question 98

The energy stored in a body, when strained within elastic limit is known as strain energy.

The maximum strain energy which can be stored in a body is termed as proof resilience.

The proof resilience per unit volume of a material is known as modulus of resilience.

CBT CE Full Test - 2 - Question 99

The disease which is not caused by water pollution is

Detailed Solution for CBT CE Full Test - 2 - Question 99

Asthma is a condition in which a person's airways become inflamed, narrow and swell and produce extra mucus, which makes it difficult to breathe. It is caused due to air pollution.

CBT CE Full Test - 2 - Question 100

The chemical formula of Hematite is ________.

Detailed Solution for CBT CE Full Test - 2 - Question 100
  • The chemical formula of Hematite is Fe2O3called as ferric oxide. It is a reddish black mineral and an ore of Iron.
  • FeO(OH).nH2is also an ore of Iron and is the chemical formula of Limonite.
  • FeS2 is the chemical formula of Pyrite.
CBT CE Full Test - 2 - Question 101

When warm air rises up and cold air from the surrounding areas rushes in to fill its place then this sets up ________ in air.
1. Conduction
2. Convection
3. Radiation
4. Agitation

Detailed Solution for CBT CE Full Test - 2 - Question 101

When warm air rises up and cold air from the surrounding areas rushes in to fill its place then this sets up convection in air.

  • When warm air rises, the air pressure at that place gets lowered. The cold air from the surrounding areas rushes in to fill its place. This sets up convection currents in the air.
  • Wind currents are generated due to uneven heating on the earth.
  • Convection is the process by which the transmission of heat takes place through a substance from one point to another due to actual bodily movement of heated particles of the substance.
CBT CE Full Test - 2 - Question 102

The shape of Indifference curve indicates ________.

Detailed Solution for CBT CE Full Test - 2 - Question 102

An indifference curve is a graph showing combination of two goods that give the consumer equal satisfaction and utility. Each point on an indifference curve indicates that a consumer is indifferent between the two and all points give him the same utility.

CBT CE Full Test - 2 - Question 103

Which element is most electronegative among Arsenic, Nitrogen and Phosphorus? 

Detailed Solution for CBT CE Full Test - 2 - Question 103
  • Nitrogen is the most electronegative among Arsenic, Nitrogen and Phosphorus.
  • As per the periodic table, Nitrogen has an atomic number of 7 and hence its electron configuration is 1s2 2s2 2p3.
  • Amongst all the others nitrogen has the highest tendency to attract a shared pair of electrons towards itself.
CBT CE Full Test - 2 - Question 104

When two liquids do not mix with each other to form a solution, what is it called?

Detailed Solution for CBT CE Full Test - 2 - Question 104
  • The two liquids that can't dissolve in each other or the two liquids in which diffusion can't takes place are called immiscible liquids. They can’t form homogeneous mixtures.For example- Water and oil.
  • When two liquids can be mixed to form homogeneous mixtures they are called miscible liquids.

For example- Alcohol and water.
Extra Information:

CBT CE Full Test - 2 - Question 105

Euler’s equation in the differential form for motion of liquids is given by

Detailed Solution for CBT CE Full Test - 2 - Question 105

The Euler’s Equation of motion in the differential form given by the following equation:

This equation is based on the assumptions that the flow is ideal and viscous forces are zero.
The integration of the Euler’s equation of motion with respect to displacement along a streamline gives the Bernoulli equation.

CBT CE Full Test - 2 - Question 106

Which of the following is/are effects of ozone depletion?

Detailed Solution for CBT CE Full Test - 2 - Question 106

Effects of ozone depletion

  • It produces a greenhouse effect and also changes the climate
  • It results in low production of crops
  • It causes damage to the organs of living things
  • Ultraviolet rays harm the plants
  • It causes to spread the skin cancer disease
  • It raises the possibilities of acid rains in urban areas
  • It increases the temperature of the environment
  • It affects the mental health of man
  • It increases the temperature of the atmosphere which has a bad effect on the vegetation
  • The UV rays reaching the earth are harmful to the pregnant women and the infant children also
CBT CE Full Test - 2 - Question 107

The optical phenomenon that is primarily responsible for the observation of rainbow on a rainy day is ________.

Detailed Solution for CBT CE Full Test - 2 - Question 107

CBT CE Full Test - 2 - Question 108

The inclination of the failure plane behind a vertical wall in the passive pressure case is inclined to the horizontal at

Detailed Solution for CBT CE Full Test - 2 - Question 108

 

Coefficient of passive earth pressure,

 

The angle which the failure plain makes with the major principal plane is equal to   As the major principal plane is vertical, the failure plane makes an angle of with the horizontal (which is the minor principal plane).

CBT CE Full Test - 2 - Question 109

Which of the following is NOT a mouse usage?

Detailed Solution for CBT CE Full Test - 2 - Question 109

A computer mouse is an input device that is most often used with a personal computer. Moving a mouse along a flat surface can move the on-screen cursor to different items on the screen. Items can be moved or selected by pressing the mouse buttons (called clicking). The mouse has two buttons, the left button, and right button, with a scroll wheel in between the two.

Use of a mouse:

  • Move the mouse cursor - The primary function is to move the mouse pointer on the screen.
  • Open or execute a program - Once you've moved the pointer to an icon, folder, or other object clicking or double-clicking that object opens the document or executes the program.
  • Select - A mouse also allows you to select text or a file or highlight and select multiple files at once.
  • Drag-and-drop - Once something is selected, it can also be moved using the drag-and-drop method.
  • Hover - Moving the mouse cursor over objects with additional hover information can help discover the function of each object on the screen. For example, hover the mouse over the hover link to see an example.
  • Scroll - When working with a long document, or viewing a long web page, you may need to scroll up or down. To scroll, use the mouse wheel, or click and drag the scroll bar.
CBT CE Full Test - 2 - Question 110

Fundamental rights in the Indian constitution has been taken from which country's constitution?

Detailed Solution for CBT CE Full Test - 2 - Question 110
  • Fundamental rights in the Indian constitution has been taken from the US constitution.
  • The other features that have been borrowed from the US Constitution are:

1. Impeachment of the president
2. Functions of president and vice-president
3. Removal of Supreme Court and High court judges
4. Judicial review
5. Independence of judiciary
6. The preamble of the constitution

CBT CE Full Test - 2 - Question 111

Which of the following represents the approximate overflow rate (litres/hours/m2) for the plain sedimentation tank?

Detailed Solution for CBT CE Full Test - 2 - Question 111

Overflow rate:
For Plain sedimentation tank
12 – 18 m3/m2/day or 12000 litres/ m2/day – 18000 litres/m2/day
Therefore, in per hours

500 litres /m2/ day or 750 litres /m2/ day

CBT CE Full Test - 2 - Question 112

Which of these poets were awarded 'Saraswati Samman 2017' on 22 January 2019?

Detailed Solution for CBT CE Full Test - 2 - Question 112
  • Gujarati poet Sitanshu Yashashchandra was awarded 'Saraswati Samman 2017' on 22 January 2019.
  • He was awarded for his poetry collection in Gujarati named 'Vakhar'.
  • The award was instituted by K.K.Birla foundation.
  • The award is given every year to an outstanding work of an Indian citizen published during the last 10 years in any of the languages mentioned in Schedule 8 of the constitution.
CBT CE Full Test - 2 - Question 113

If b = breadth of the beam, d = effective depth and fy = Characteristic strength in N/mm2. Minimum area of tension reinforcement shall be less than the following:

Detailed Solution for CBT CE Full Test - 2 - Question 113

Tension reinforcement (As per IS 456: 2000, clause 26.5.1.1)
The minimum area of tension reinforcement should be governed by

where As = minimum area of tension reinforcement,
b = breadth of rectangular beam or breadth of web of T-beam,
d = effective depth of beam,
fy = characteristic strength of reinforcement in N/mm2
The maximum area of tension reinforcement shall not exceed 0.04 bD,
where D is the overall depth of the beam.

CBT CE Full Test - 2 - Question 114

Where was the Vaikom Satyagraha (1924-25) started? 

Detailed Solution for CBT CE Full Test - 2 - Question 114

Vaikom Satyagraha was a Satyagraha in Travancore, Kerala against untouchability in Hindu society.

  • The movement was cantered at the Shiva temple at Vaikom, near Kottayam.
  • The Satyagraha aimed at securing freedom to all sections of society through the public roads leading to the Sri Mahadeva Temple at Vaikom.

Hence, 1 is the correct answer.

CBT CE Full Test - 2 - Question 115

The shear force diagram for a simply supported beam of a span L is shown in the figure. The maximum bending moment in the beam is:

Detailed Solution for CBT CE Full Test - 2 - Question 115

Resultant force at point D,
FD – W = 0
FD = W
At point C,
FD + FC = 0
F= -W,
Similarly,
F= W and F= -W
Therefore, the beam with the loading and its bending moment diagram is shown in the figure below:



Hence, the maximum bending moment of the beam is (W × a).

CBT CE Full Test - 2 - Question 116

A force acting on a body of mass 1.5 kg, accelerates it from rest to a velocity of 4 m/s. The change in the momentum of the body is

Detailed Solution for CBT CE Full Test - 2 - Question 116

Momentum of a body is defined to be the product of its mass m and velocity v, and is denoted by p.
p = mv
Δp = m2v2 – m1v1 = m (v2 – v1) = m (4 – 0) = 1.5 × 4 = 6 kg m/s

CBT CE Full Test - 2 - Question 117

In flat slab design, the critical section for shear shall be considered from the periphery of the column (capital/drop panel) and perpendicular to the plane of the slab at a distance:

Detailed Solution for CBT CE Full Test - 2 - Question 117

As Per IS 456: 2000, Clause 31.6.1

The critical section for shear shall be at a distance d/2 from the periphery of the column/capital/ drop panel, perpendicular to the plane of the slab where d is the effective depth of the section.

Moment in the slab is more near the column, therefore the slab is thickened near the column by providing the drops as shown in the figure below:

The drop panel is also called the capital of the column. 

CBT CE Full Test - 2 - Question 118

Which among the following glasses can cut off the UV rays?

Detailed Solution for CBT CE Full Test - 2 - Question 118
  • Crooked Glass can cut off the UV rays.
  • It is a special type of glass which contains Cerium Oxide [CeO2].
  • It is used in making sunglasses.
CBT CE Full Test - 2 - Question 119

Air binding in rapid sand filter occurs due to

Detailed Solution for CBT CE Full Test - 2 - Question 119

Air Binding:

The clogging of a filter due to resistance offered by the medium particle along with the impurities exceeds the static head of water.

Due to the above resistance negative head or vacuum pressure is developed at the bottom layer of the filter medium.

The negative head created in the bottom releases dissolve gases that rises to the surface and leads to binding of the voids of the filter medium from the bottom.

The above process of operational trouble caused in rapid sand filter is called as Air Binding.

To avoid Air Binding:

Proper cleaning of filter should be done when

  1. head loss becomes 2.5 to 3.5 m or
  2. Negative head becomes 1.2 m.
CBT CE Full Test - 2 - Question 120

Sewage waste is a

Detailed Solution for CBT CE Full Test - 2 - Question 120

According to nature, pollutants can be classified into Non-degradable pollutants and Bio - degradable pollutants.

Non-degradable pollutants

Those pollutants which cannot be broken down into simpler, harmless substances in nature.

DDT, plastics, polythene, bags, insecticides, pesticides, mercury, lead, arsenic, metal articles like aluminium cans, synthetic fibres, glass objects, iron products and silver foils are nonbiodegradable pollutants. (Tables)

Bio-degradable pollutants
Those pollutants which can be broken down into simpler, harmless substances in nature.

Sewage waste, domestic waste, etc. are the bio-degradable waste.

CBT CE Full Test - 2 - Question 121

What is the SI unit of angular frequency?

Detailed Solution for CBT CE Full Test - 2 - Question 121
  • The SI unit of angular frequency is rad/sec.
  • It refers to the angular displacement of an object per unit time and is given by: ω = ν  ×2π
    where, ν is the frequency.
CBT CE Full Test - 2 - Question 122

Which city is called as the Pittsburgh of India?

Detailed Solution for CBT CE Full Test - 2 - Question 122
  • Jamshedpur is known as the Steel City of India or Pittsburgh of India for being rich in minerals.
  • It is a home to many industries like Tata Motors, Tata Steels, Usha Martin Industries, Steel & Wire Products, Tata Pigments, Tayo Rolls Limited, and many other assets.
  • This city is also known as the Tatanagar.
CBT CE Full Test - 2 - Question 123

EPROM stands for

Detailed Solution for CBT CE Full Test - 2 - Question 123

CBT CE Full Test - 2 - Question 124

Beams and Arches of span less than 6 m may be stripped after

Detailed Solution for CBT CE Full Test - 2 - Question 124

CBT CE Full Test - 2 - Question 125

A hacker contacts your phone or E-mails and attempts to acquire your password is called

Detailed Solution for CBT CE Full Test - 2 - Question 125

A Threat is any circumstance or event with the potential to cause harm to the system or activity in the form of destruction, disclosure, and modification of data, or denial of service. A threat is a potential for harm. 

Some of the common terms associated with threats and their description are as follows:

  • Malware: A collective term for malicious software, such as viruses, worms and trojans; designed to infiltrate systems and information for criminal, commercial or destructive purposes.
  • Phishing: A form of social engineering, involving the sending of legitimate-looking emails aimed at fraudulently extracting sensitive information from recipients, usually to gain access to systems or for identity theft.
  • Spam: Unsolicited email sent in bulk to many individuals, usually for commercial gain, but increasingly for spreading malware.

Spoofing: A spoofing attack is when a malicious party impersonates another device or user on a network in order to launch attacks against network hosts, steal data, spread malware, or bypass access controls. There are several different types of spoofing attacks that malicious parties can use to accomplish this. They are IP Address Spoofing Attacks, ARP (Address Resolution Protocol) Spoofing Attacks, DNS Server Spoofing Attacks, etc.

software bug is an error, flaw, failure or fault in a computer program or system that causes it to produce an incorrect or unexpected result, or to behave in unintended ways.

CBT CE Full Test - 2 - Question 126

China clay is an example of:

Detailed Solution for CBT CE Full Test - 2 - Question 126

Kaolin, also called as china clay, soft white clay that is an essential ingredient in the manufacture of porcelain china and is widely used in the making of paper, rubber, paint, and many other products.

CBT CE Full Test - 2 - Question 127

During a survey two points were fixed as P and Q having RL 268.4 m and 276.4 m respectively at a distance of 50 m. It was seen that the contour interval was found to be 2 m and therefore four points on the four contours of RL’s 270 m, 272 m, 274 m and 276 m respectively. By using Proportionality, the distance of 274 m contour from P will be

Detailed Solution for CBT CE Full Test - 2 - Question 127

Level difference between P and Q = 276.4 m – 268.4 m = 8 m
Distance between P and Q = 48 m
Therefore, the distance of 274 m contour from point P will be

CBT CE Full Test - 2 - Question 128

Watering done prior to the sowing of the crops is called ________.

Detailed Solution for CBT CE Full Test - 2 - Question 128

Paleo Irrigation: During the initial days of irrigation before the crop is sown, the soil is very dry. In such cases, the soil is moistened with water as it helps in ploughing and sowing the crops. It is the watering done prior to the sowing.

Kor watering: It is the first watering which is given to the crop, when the crop is few centimetres high.

Duty: It is the number of hectares of land irrigated for full growth of a given crop by a supply of 1 cumecs of water continuously during the entire base period of that crop.

Delta: The total water depth required by a crop to attain its full maturity in its base period.

CBT CE Full Test - 2 - Question 129

In a shear test on cohensionless soils, if the initial void ratio is less than critical void ratio (ec), the sample will:

Detailed Solution for CBT CE Full Test - 2 - Question 129

If the initial void ratio is less than the critical void ratio, this means it is dense sand. Hence volume will initially decrease and then increase.

CBT CE Full Test - 2 - Question 130

A turbine generates the power of 150,000 kW while working at the speed of 300 rpm at the head of 100 m. What is the specific speed of the turbine?

Detailed Solution for CBT CE Full Test - 2 - Question 130

Specific speed: It is defined as the speed of a similar turbine working under a head of 1 m to produce a power output of 1 kW. The specific speed is useful to compare the performance of various type of turbines. The specific speed differs for different type of turbines and is same for the model and actual turbine.

Specific Speed of Turbine, 
Where N = speed of turbine, P = power generated, and H = head generated

CBT CE Full Test - 2 - Question 131

The depth of tension cracks in a soft clay (ϕu = 0) is

Detailed Solution for CBT CE Full Test - 2 - Question 131


Let Zc = Depth of tension crack
At Z = Zc, pa = 0

For ϕu = 0, ka = 1
∴ Depth of tension crack

CBT CE Full Test - 2 - Question 132

The gases which are generally evolved during anaerobic decomposition of sewage are:

Detailed Solution for CBT CE Full Test - 2 - Question 132

The end products of the anaerobic decomposition of sewage are acids, alcohols and gases.

Some common type of gases evolved during anaerobic decomposition of sewage are carbon dioxide, Ammonia, Hydrogen sulphide and methane

CBT CE Full Test - 2 - Question 133

What is the modular ratio to be used in the analysis of RC beams using working stress method if the grade of concrete is M20?

Detailed Solution for CBT CE Full Test - 2 - Question 133

As per IS: 456-2000, modular ratio is given by

For M20 concrete
σcbc = 7 N/mm2

CBT CE Full Test - 2 - Question 134

When is the World Earth Day celebrated?

Detailed Solution for CBT CE Full Test - 2 - Question 134
  • The World Earth Day is celebrated on 22nd April annually to support the environmental protection.
  • It was first celebrated in 1970, by United State Senator Gaylord Nelson.
CBT CE Full Test - 2 - Question 135

In a 1 in 16 model of a spillway, discharge is 3 m3/s, then the corresponding discharge in prototype is

Detailed Solution for CBT CE Full Test - 2 - Question 135

In a spillway the predominant force is gravity, therefore the Froude law will be applicable for the model and prototype study.
Froude Model Law:
Scale ratio for velocity (Vr = Vm/Vp) = (Lr)0.5
Scale ratio for time, Tr = (Lr)0.5
Scale ratio for discharge, Qr = (Lr)2.5
Scale ratio for Force, Fr = (Lr)3
Scale ratio for Power, Pr = (Lr)3.5
Therefore,

CBT CE Full Test - 2 - Question 136

Bar AC shown in the figure is fixed at both ends and is subjected to a torque T at B where AB = L/3. Then torque at end A is ______

Detailed Solution for CBT CE Full Test - 2 - Question 136


Here θA = θC
T = TA + TC

Now, T = TA + TB = TA + ½ TA

CBT CE Full Test - 2 - Question 137

Which of the tools are used in the hand demolition method of demolition of the building?

Detailed Solution for CBT CE Full Test - 2 - Question 137

Hand Demolition:

Hammer and chisel are the tools used in hand demolition.
Gas cutting equipment to cut the rebar.

Machine Demolition:
Diamond floor saw
Hand saw
Concrete wall saw
Hydraulic chain saw
Hydraulic splitters
Hydraulic cruncher

CBT CE Full Test - 2 - Question 138

The instrument used for setting out an offset at right angle, is called as:

Detailed Solution for CBT CE Full Test - 2 - Question 138

1. Open cross staff is used to setting out an offset at right angle.
2. French cross staff is used for setting out an offset at angle of 45 degree.
3. Optical square is used for setting out accurately the long offsets.
4. adjustable cross staff is used for setting out an offset at any angle.

CBT CE Full Test - 2 - Question 139

Where has the second India-Myanmar bilateral Army exercise named 'IMBEX 2018-19' commenced on 14 January 2019?

Detailed Solution for CBT CE Full Test - 2 - Question 139
  • The second India-Myanmar bilateral Army exercise named 'IMBEX 2018-19' commenced at Chandimandir military station in Haryana on 14 January 2019.
  • The aim of this joint training event is to train the Myanmar delegation for participation in UN peacekeeping operations.
  • The exercise includes participation of 15 officers from Myanmar Army and 15 officers from Indian Army
CBT CE Full Test - 2 - Question 140

In which type of foundation the length is considerably greater than its width?

Detailed Solution for CBT CE Full Test - 2 - Question 140

Strip footing: A strip footing is another type of spread footing which is provided for a load bearing wall. The length of strip footing is considerably greater than its width. A strip footing is also known as continuous footing.

Mat or Raft foundation: It is a large slab supporting a number of columns and walls under entire structure or a large part of the structure. It is used to cover the foundation of whole building area.

Pile foundation: A pile is basically a long cylinder of a strong material such as concrete that is pushed into the ground to act as a steady support for structures built on top of it. It is also called as deep foundation. Length of pile is very much greater than that of its lateral dimension.

CBT CE Full Test - 2 - Question 141

Clam shell is a machine used for

Detailed Solution for CBT CE Full Test - 2 - Question 141

Clam shell is a machine used for Excavating. Clam shell is a bucket or grapple (as on a dredge) having two hinged jaws.

Hoe can be used to excavate relatively stiffer earth from a depth below the standing level of the equipment. 

Drag line can be used to collect the loose material from a much larger depths.

Power shovel can be used to excavate the loose earth material effectively and can be used in undulating grounds because it has a crawler mounting.

CBT CE Full Test - 2 - Question 142

Which of the factor does not influence the strength of a concrete that may be developed by workable, properly placed mixture of cement, aggregate and water?

Detailed Solution for CBT CE Full Test - 2 - Question 142

The factor that influences the strength of a concrete that may be developed by workable, properly placed mixture of cement, aggregate and water under the same mixing, curing and testing conditions are:

  • Ratio of cement to mixing water;
  • Ratio of cement to aggregate;
  • Grading, surface texture, shape, strength and stiffness of aggregate particles;
  • Maximum size of aggregate
CBT CE Full Test - 2 - Question 143

A 30 m chain after measuring a distance of 6000 m was found to be 10 cm more than the designed length. If the chain was standardised before the commencement of survey then the true length is

Detailed Solution for CBT CE Full Test - 2 - Question 143

Measured distance = 6000 m
Error in chain = 10/100 = 0.1 m
∴ Actual or true distance = Measured distance x (1 + e/L)

= 6020 m

CBT CE Full Test - 2 - Question 144

Which one of the following places of Indus Valley Civilization was situated on the bank of Ravi River?

Detailed Solution for CBT CE Full Test - 2 - Question 144

CBT CE Full Test - 2 - Question 145

Stokes’ law does not hold good if the size of particle is greater than:

Detailed Solution for CBT CE Full Test - 2 - Question 145

For particles smaller than 0.1 mm (or 100 μm) Stokes law holds very well. For particles greater than 0.1 mm Stokes law does not hold as regard aqueous suspension.

Hence, according to the question, Stokes’ law does not hold good if the size of the particle is greater than 0.2 mm.

CBT CE Full Test - 2 - Question 146

What is the maximum slenderness ratio of lacing bars in a built-up column?

Detailed Solution for CBT CE Full Test - 2 - Question 146

As per IS:800 – 1984 Clause 5.7.2.3
The slenderness ratio of the lacing bar for the compression members shall not exceed 145.

Note:

  1. In riveted connection, the effective length of the lacing bars for the determination of the permissible stress shall be taken as the length between the inner end rivet of the bar for single lacing, and as 0.7 of this length for double lacing effectively riveted at the intersection.
  2. In welded connection, the effective length shall be considered as 0.7 times the distance between the inner ends of the weld connecting the lacing bars to the member.
CBT CE Full Test - 2 - Question 147

Which of the following is not a greenhouse gas?

Detailed Solution for CBT CE Full Test - 2 - Question 147

Greenhouse effect

  • It occurs due to the increase in the percentage of carbon dioxide in the atmosphere
  • It absorbs the solar rays and energy of the sun due to which the temperature on the earth increases and natures balance gets disturbed
  • Our vehicles and industries are continuously increasing the amount of carbon dioxide in the atmosphere

Global Warming

  • Increase in average temperature of the earth surface due to the greenhouse effect is called global warming
  • It also refers to the increase in average temperature of the air and sea at earth's surface

Green House Gases (GHG):
The major greenhouse gases are

  • Water vapour - causes about 36% - 70% of the greenhouse effect
  • Carbon dioxide (CO2) which causes 9 - 26%
  • Methane (CH4) causes 4 - 9% and ozone (O3)

So Ethane is not a greenhouse gas

CBT CE Full Test - 2 - Question 148

Using straight line method annual deprecation D is equal to:

Detailed Solution for CBT CE Full Test - 2 - Question 148

Method of Depreciation

Straight Line Method a fixed amount of original cost is lost every year and is deducted from the original cost as long as the useful service life and salvage value remain unchanged. Thus, at the end of the utility period only the salvage value remains.

CBT CE Full Test - 2 - Question 149

Which one is an input device of the computer?

Detailed Solution for CBT CE Full Test - 2 - Question 149

Components of Computer
Input Devices

Input devices are used to enter data or instructions into a computer.

  • Keyboard
  • Mouse
  • Digital camera
  • Scanner
  • Mic
  • Barcode reader
  • Joystick

 

Output Devices:
Output unit receives the information from the processing unit and provides the result in a human-readable form.

  • A visual display unit (Monitor, Screen)
  • Printer/Plotter
  • Multimedia projector
  • Speaker

 

Storage Devices
Storage devices are the computer hardware used to remember/store data.

  • Floppy disks
  • Hard disks
  • CD/DVD
CBT CE Full Test - 2 - Question 150

A rectangular channel of width 2√5 m carries a discharge of 40 m3/s. The critical depth of water flowing through the channel is (Take g = 10 m/s2)

Detailed Solution for CBT CE Full Test - 2 - Question 150

For a rectangular channel, the critical depth is given by

where q = discharge per unit width and g = acceleration due to gravity.

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