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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Tests  >  ISRO Draughtsman Civil Mock Test - 7 - Civil Engineering (CE) MCQ

ISRO Draughtsman Civil Mock Test - 7 - Civil Engineering (CE) MCQ


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30 Questions MCQ Test - ISRO Draughtsman Civil Mock Test - 7

ISRO Draughtsman Civil Mock Test - 7 for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The ISRO Draughtsman Civil Mock Test - 7 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The ISRO Draughtsman Civil Mock Test - 7 MCQs are made for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for ISRO Draughtsman Civil Mock Test - 7 below.
Solutions of ISRO Draughtsman Civil Mock Test - 7 questions in English are available as part of our course for Civil Engineering (CE) & ISRO Draughtsman Civil Mock Test - 7 solutions in Hindi for Civil Engineering (CE) course. Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free. Attempt ISRO Draughtsman Civil Mock Test - 7 | 80 questions in 90 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study for Civil Engineering (CE) Exam | Download free PDF with solutions
ISRO Draughtsman Civil Mock Test - 7 - Question 1
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The difference between face left and face right observation of theodolite is 3’. The error is -

Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 1
The difference between face left and face right observation of a theodolite is 3’. So the error is 1’30”.

Error is half the difference between the face left and face right observation. This discussion on The difference between face left and face right observation of a theodolite is 3'

ISRO Draughtsman Civil Mock Test - 7 - Question 2
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The limit to Poisson's ratio is :

Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 2
The Poisson's ratio of a stable, isotropic, linear elastic material cannot be less than - 1.0 nor greater than 0.5 due to the requirement that Young's modulus, the shear modulus, and bulk modulus have positive values.
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ISRO Draughtsman Civil Mock Test - 7 - Question 3
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The limiting length of an offset does not depend upon-

Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 3
The allowable length of offset depends upon the degree of accuracy required, scale, method of setting out the perpendicular, and nature of the ground.
ISRO Draughtsman Civil Mock Test - 7 - Question 4
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Local shear failure may occur in:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 4

Local shear failure occurs in case of loose sand and soft clays where large settlement may occur below the foundation before soil reaches to plastic state.

ISRO Draughtsman Civil Mock Test - 7 - Question 5
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When the curvature of earth is taken into account, the surveying is called as
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 5

Plane surveying: Mean surface of earth is considered as plane.
Geodetic surveying: Curvature of the earth is taken into account.

ISRO Draughtsman Civil Mock Test - 7 - Question 6
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Gypsum is added to cement
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 6

Gypsum acts as a retarder. It counteracts the fast rate of hydration (for which C3A is primarily responsible) to prevent flash set.

ISRO Draughtsman Civil Mock Test - 7 - Question 7
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Directions: In question below, select the related word from the given alternatives
Joy : Delight : : Gloomy : ?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 7

Delight is a synonym of Joy. Similarly, Dull is a synonym of Gloomy.

ISRO Draughtsman Civil Mock Test - 7 - Question 8
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Permissible compressive strength of M200 concrete grade is-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 8
Permissible compressive strength of M200 concrete grade is 200 kg/cm2

Hence the option C is correct.

ISRO Draughtsman Civil Mock Test - 7 - Question 9
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The pH value of fresh sewage is usually-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 9
The pH value of fresh sewage is usually slightly more than water supplied to the community. Most soaps, detergents, cleaners, laundry agents, and bleach are alkaline in nature. The common range of pH of fresh sewage ranges from More than 7.
ISRO Draughtsman Civil Mock Test - 7 - Question 10
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The method of design of steel framework for greatest rigidity and economy in wight is known as-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 10
The method of design of steel framework for greatest rigidity and economy in weight is known as fully rigid design.

Hence the option C is correct.

ISRO Draughtsman Civil Mock Test - 7 - Question 11
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If the water table rises above ground level, then effective stress-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 11
Total stress =

Pore pressure

Effective stress

If the water table rises above the ground level, the total stress and neutral stress will increase by the same magnitude, but effective stress remains unchanged.

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 7 - Question 12
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If the initial D.O. of sewage sample is 6mg/l and final D.O. is 2 mg/l. The dilution is 1%. Then the BOD of the sample is-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 12
BOD = (Initial D.O. – Final D.O.) × Dilution Factor

Hence the correct answer is option d.

ISRO Draughtsman Civil Mock Test - 7 - Question 13
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If two springs of stiffness K1 and K2 are connected in series, the stiffness of the combined spring will be-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 13
For spring connected in series, we have-

1K=K1+K2K1K2

K=K1K2K1+K2

Hence the correct answer is option A.

ISRO Draughtsman Civil Mock Test - 7 - Question 14
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The coefficient of permeability of a soil-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 14
An increase in temperature of the permanent increases the density marginally and decreases the viscosity significantly. So increase in temperature of the pore fluid increases the permeability of the soil.

Hence the correct answer is option A.

ISRO Draughtsman Civil Mock Test - 7 - Question 15
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An earthen channel has been designed on Lacey formulae to carry a full supply discharge of 30 m2/s. The median size of the soil is 0.3 mm. the mean velocity of flow at this discharge is
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 15

Hence the correct answer is option B.

ISRO Draughtsman Civil Mock Test - 7 - Question 16
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The angle between the principal plane and the plane of maximum shear is
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 16

The plane on which normal stress attains its maximum and minimum values are called principal planes. The shear stress on the principal plane is zero.

The planes of maximum and minimum normal stresses are at an angle of 90° to each other.

Planes of maximum stress occur at 45° to the principal planes.

ISRO Draughtsman Civil Mock Test - 7 - Question 17
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Maximum spacing of longitudinal bars measured along the periphery the RC column shall not exceed
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 17
As per IS 456: 2000, Clause 26.5.3.1

The spacing of longitudinal bars measured along the periphery of the column shall not exceed 300 mm. In a pedestal of a column, the area of the longitudinal reinforcement shall not be less than 0.15% of the gross area.

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 7 - Question 18
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The drag force exerted by a fluid on a body immersed in the fluid is due to-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 18
Viscosity of fluid and the gravitational pull both exert a drag force on the body.

The drag force on an immersed object can be due to various reasons. It also depends on the direction of the object’s movement. Viscosity is the thickness of fluid that opposes the motion of the object. Gravity causes a ‘downward pull’ that slows horizontal movement. The pressure of the liquid on all sides of the object also hampers its motion.

Hence the correct answer is option D.

ISRO Draughtsman Civil Mock Test - 7 - Question 19
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The effective length of a fillet weld should not be less than-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 19
The effective length of a fillet weld may be taken as the overall length of the full-size fillet less one leg length, s, for each end which does not continue around a corner. However, a fillet weld with an effective length less than 4s or less than 40 mm should not be used to carry the load.
ISRO Draughtsman Civil Mock Test - 7 - Question 20
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A three-hinged arch is hinged at supports end-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 20
It is needed not to be placed at the crown, it can be placed anywhere in the rib, but in common, it is placed at the crown.
ISRO Draughtsman Civil Mock Test - 7 - Question 21
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The moisture content of a soil, below which the soil volume becomes constant, is called the :
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 21
The moisture content of soil below which the soil volume becomes constant is called the Shrinkage limit. The Shrinkage limit is the amount of water content within the soil, just enough to fill all the pores of the soil. At this point, the soil is saturated.
ISRO Draughtsman Civil Mock Test - 7 - Question 22
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Uniformity coefficient of a soil is:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 22
The uniformity coefficient (Cu) is defined as the ratio of D60 to D10. A value of Cu greater than 4 to 6 classifies the soil as well graded. Uniformly graded soil has identical particles with a Cu value approximately equal to 1. A uniformity coefficient value of 2 or 3 classifies the soil as poorly graded.
ISRO Draughtsman Civil Mock Test - 7 - Question 23
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According to IS: 456 -1978, the thickness reinforced concrete footing on piles at its edges is kept less than-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 23
Answer is none of the above; as per IS 456: 2000, for footing on soil, edge thickness should not be less than 150 mm and, for piles, edge thickness should not be less than 300 mm.
ISRO Draughtsman Civil Mock Test - 7 - Question 24
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To measure static pressure in a pipe, one uses a pressure gauge connected to a:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 24
A Pitot tube measures total pressure and static pressure to determine the velocity pressure from which air velocity can be derived. The Pitot tube is inserted into the duct with the tip pointed toward the airflow. The manometer will then display velocity pressure which can be converted to velocity.
ISRO Draughtsman Civil Mock Test - 7 - Question 25
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If wind and earthquake loads are considered then the permissible stress in steel structure are :
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 25
When the effect of wind or seismic load is taken into account, the permissible stress in steel is increased by 33⅓ percent. For rivets, bolts, and tension rods, the permissible stresses are increased by 25 percent, when the effect of wind or seismic load is taken into account.

Hence, the correct option is (D)

ISRO Draughtsman Civil Mock Test - 7 - Question 26
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Granite mainly composed of quartz and feldspar particles is obtained from _____.
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 26
Granite is an igneous rock with between 20% and 60% quartz by volume and at least 35% of the total feldspar. Granite is a coarse-grained igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly solidifies underground. It is common in the Earth's continental crust, where it is found in various kinds of igneous intrusions.

Hence, the correct option is (C).

ISRO Draughtsman Civil Mock Test - 7 - Question 27
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The work output of a mason for brickwork in cement mortar for foundation work is roughly expected to be:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 27

The following may be taken as the approximate quantity of work or out turn or task for an average artisan per day:

ISRO Draughtsman Civil Mock Test - 7 - Question 28
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Which of the following statement is correct?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 28
  • The error in measured length due to bad ranging is always positive as the measured value due to bad ranging is always greater than the actual value.
  • As the error in measured length due to the careless holding of the chain is an accidental error and accidental errors as obvious compensating in nature.
  • Correction for Pull (Cp):

Where,

P = Pull applied during measurement

Po = Standard Pull

L = length of the tape

E = Young’s modulus of elasticity

So, when P > Po, the corrective will be positive, and the error will therefore be negative.

  • If the chain used in measuring a distance is too short, the error will be positive, and correction will be negative and vice versa.

ISRO Draughtsman Civil Mock Test - 7 - Question 29
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What is the specific energy (m-kg/kg) for 1 m depth of flow having velocity of 3 m/s?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 29

Specific Energy,

Where y = depth of the flow

v = velocity of the flow

g = acceleration due to gravity

ISRO Draughtsman Civil Mock Test - 7 - Question 30
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Which among the following metals is toxic to humans.
Detailed Solution for ISRO Draughtsman Civil Mock Test - 7 - Question 30
As per BIS 10500 drinking water standards:

  • The permissible limit of mercury is less than 0.001 mg/l i.e., at very small concentrations elemental form of mercury is toxic to the central and peripheral nervous systems of humans

  • Mercury inhalation can damage respiratory systems and hamper lungs and kidneys

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