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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Tests  >  ISRO Draughtsman Civil Mock Test - 9 - Civil Engineering (CE) MCQ

ISRO Draughtsman Civil Mock Test - 9 - Civil Engineering (CE) MCQ


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30 Questions MCQ Test - ISRO Draughtsman Civil Mock Test - 9

ISRO Draughtsman Civil Mock Test - 9 for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The ISRO Draughtsman Civil Mock Test - 9 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The ISRO Draughtsman Civil Mock Test - 9 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 - 9 below.
Solutions of ISRO Draughtsman Civil Mock Test - 9 questions in English are available as part of our course for Civil Engineering (CE) & ISRO Draughtsman Civil Mock Test - 9 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 - 9 | 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 - 9 - Question 1
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For unstiffened webs of girders, the thickness of the web shall not be less than

Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 1
For unstiffened webs of girders, the thickness of the web shall not be less than D1/85.
ISRO Draughtsman Civil Mock Test - 9 - Question 2
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The relationship between tropical ground

Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 2
Tropical year = 365.2422 days

Sidereal year = 365.2564 days

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ISRO Draughtsman Civil Mock Test - 9 - Question 3
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The commonly used lime in whitewashing is:

Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 3
Fat lime is suitable for whitewashing and plastering.

Fat lime is also known as high calcium lime or pure lime or rich lime or white lime. It is popularly known as fat lime as it slakes vigorously, and its volume is increased to about 2 to 2.5 times that of quick lime. This lime is used for various purposes as whitewashing, plastering of walls, as lime mortar with sand for pointing in masonry work, as a lime mortar with turki for thick masonry walls, foundations, etc.

ISRO Draughtsman Civil Mock Test - 9 - Question 4
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The line normal to the plumb line is known as -
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 4
The line normal to the plumb line is known as the level line. A level line is a line parallel to the mean spherical surface of the earth or a line lying on a level surface.
ISRO Draughtsman Civil Mock Test - 9 - Question 5
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In the following question, select the related letters/number from the given alternatives.
GREAT : 25 : : NUMBER : ?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 5

Here, GREAT is a five character word ⇒ 5 × 5 = 25
Therefore, NUMBER is a six character word ⇒ 6 × 6 = 36
Hence answer is 36.

ISRO Draughtsman Civil Mock Test - 9 - Question 6
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If the maximum bending moment of a simply supported slab is M kg-cm, the effective depth of the slab is-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 6
The effective depth of the slab

(=√M/100Q)

Hence the option D is correct.

ISRO Draughtsman Civil Mock Test - 9 - Question 7
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When slenderness ratio in column lies between 32 to 120, it is known as-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 7
The columns with their lengths varying from 8 times their diameter to 30 times their respective diameters or their slenderness ratio lying between 32 and 120 are classified under the medium column.

Hence the option C is correct.

ISRO Draughtsman Civil Mock Test - 9 - Question 8
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The length of the straight portion of a bar beyond the end of the hook should be at least-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 8

The length of the straight portion of a bar beyond the end of the hook curve should be at least four times the diameter.

Hence the option C is correct.

ISRO Draughtsman Civil Mock Test - 9 - Question 9
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The process involved in Chlorination before breakpoint chlorination are-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 9
The processes involved in chlorination before Breakpoint chlorination

(i) Plain

(ii) Pre

(iii) Post

(iv) Double Chlorination

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 9 - Question 10
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In structure, Muller Breslau Principle is used for:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 10
The Müller-Breslau principle is a method to determine influence lines. The principle states that the influence lines of action (force or moment) assumes the scaled form of the deflection displacement.
ISRO Draughtsman Civil Mock Test - 9 - Question 11
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Effective length of the fillet weld of length L and size S is given by -
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 11
Effective length of the fillet weld of length L and size S is given by L – 2s.

Hence, the correct option is (b).

ISRO Draughtsman Civil Mock Test - 9 - Question 12
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The line drawn through the points of the same declination is called-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 12
Iso = equal, Gonic = declination, thus isogonic lines represent lines obtained from joining points of equal declination.

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 9 - Question 13
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Low workability of concrete conforms to a slump of

Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 13
Low workability of concrete conforms to a slump of 25-75 mm.

Hence the correct answer is option A.

ISRO Draughtsman Civil Mock Test - 9 - Question 14
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When the water table is under the base of a footing at a depth equal to the width of footing, the bearing capacity of soil is-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 14
If the water table is located at the level of the base of footing below it, the surcharge term is not affected. However, the unit weight in the third term is modified.

But, when b = B,

i. e. W/T at depth B below the base

(qu=cNcγDfNc0.5BγNγ)

hence no change.

ISRO Draughtsman Civil Mock Test - 9 - Question 15
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If B is the centre of buoyancy, G is the centre of Gravity and M is the metacentre of a floating body, the body will be in stable equilibrium if-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 15
If M lies above G, then it is in stable equilibrium; if M lies below Gm, then unstable equilibrium If M coincides with G, then neutral.
ISRO Draughtsman Civil Mock Test - 9 - Question 16
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The process by which a mass of saturated soil is caused by external forces to suddenly lose its shear strength and to behave as fluid is called-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 16
The phenomenon when the sand losses its shear strength due to oscillatory motion is known as liquefaction of sand—the structure resting on such soil sink.
ISRO Draughtsman Civil Mock Test - 9 - Question 17
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In PERT analysis, the time estimates of activities follow-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 17
In PERT high stresses analysis, the time estimates of each activity follow (β) -distribution.
ISRO Draughtsman Civil Mock Test - 9 - Question 18
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Lacing of compound steel columns-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 18

Double laced and Single Laced System Combined with Cross members.

ISRO Draughtsman Civil Mock Test - 9 - Question 19
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A flaky aggregate is said to be elongated if its length is-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 19
A flaky aggregate is said to be elongated if its length is twice the mean size.

Hence the correct answer is option B.

ISRO Draughtsman Civil Mock Test - 9 - Question 20
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The commonly used thinner in oil paints,
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 20
Common solvents used as paint thinners include:

  • Mineral spirits (US) / White spirit (UK)

  • Acetone.

  • Turpentine.

  • Naphtha.

  • Toluene.

  • Methyl ethyl ketone (MEK)

  • Dimethylformamide (DMF)

  • 2-Butoxyethanol, or any of the other glycol ethers.

ISRO Draughtsman Civil Mock Test - 9 - Question 21
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The enlarged head of the supporting column of a flat slab is called-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 21
Drop panels are rectangular, just supported above the Capital. Capital is the enlarged shape to support the drop panel.
ISRO Draughtsman Civil Mock Test - 9 - Question 22
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According to IS : 800-1962 the permissible bending stress in steel slab plates is-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 22
Maximum permissible bending stress in Column is 0.75fy .

so that 0.75 × 250 = 1875 ~1890 Kg/cm2.

ISRO Draughtsman Civil Mock Test - 9 - Question 23
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The distribution system in water supplies is designed on the basis of:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 23
The distribution system in water supplies is designed based on the gravitational pull, such as the purified water in the gravity system flow wholly under gravity.
ISRO Draughtsman Civil Mock Test - 9 - Question 24
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A groyne pointing upstream is known as :
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 24
A groyne pointing upstream is known as repelling groyne whereas groyne pointing downstream is known as attracting groyne.

Hence, the correct option is (B)

ISRO Draughtsman Civil Mock Test - 9 - Question 25
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With storage, the strength of cement:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 25

  • Due to the hygroscopic nature of cement, it easily absorbs moisture from the atmosphere

  • This moisture or dampness is the main hazard for cement which makes it hard like stone and it converts it to a useless material not suitable for construction.

  • Storage of cement requires more care as strength of cement decreases with time

  • Storage of cement should be done in such a manner that it is not exposed to the atmosphere which can be done by packing in airtight bags.

Hence, the correct option is (B)

ISRO Draughtsman Civil Mock Test - 9 - Question 26
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Which of the following chemical compounds can be used for de-chlorination of water?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 26
De-chlorination is the process of removing chlorine from water (e.g., disinfected wastewater) before discharging the water into the environment. De-chlorination is performed because chlorine can form deposits on the internal edges of industrial equipment, cause health issues (e.g., choking) or lead to corrosion.

De-chlorination can be achieved with sulphur dioxide, sodium bisulphite (NaHSO3) or sodium metabisulphite (Na2S2O5).

Hence, the correct option is (D)

ISRO Draughtsman Civil Mock Test - 9 - Question 27
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Which one of the following is not a classification of stones?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 27
The classifications of stones are physical (based on structure), chemical (based on chemical composition), practical (based on usage), and geological (based on the mode of origin). Mineralogical classification is not a means of classifying stones in general. It’s called chemical classification.

Hence, the correct option is (B).

ISRO Draughtsman Civil Mock Test - 9 - Question 28
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The moisture content of clayey soil is gradually reduced from a large value. The correct sequence of the occurrence of the limit is -
ISRO Draughtsman Civil Mock Test - 9 - Question 29
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Which one of the following is correct for impulse turbines?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 29
In the Impulse Turbine, the available hydraulic energy is first converted into kinetic energy by means of an efficient nozzle.

The high-velocity jet issuing from the nozzle then strikes a series of suitably shaped buckets fixed around the rim of a wheel.

The buckets change the direction of the jet without changing its pressure. The resulting change in momentum sets buckets and wheel into rotary motion and thus mechanical energy is made available at the turbine shaft.

Important impulse turbines are: Pelton wheel, Turgo - impulse wheel, Girad turbine, Banki turbine and Jonval turbine, etc., Pelton wheel is predominantly used at present.

Whereas In Reaction Turbine, a part of the total available hydraulic energy is transformed into kinetic energy before the water is taken to the turbine runner. A substantial part remains in the form of pressure energy.

ISRO Draughtsman Civil Mock Test - 9 - Question 30
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Compaction factor is defined as the ratio of:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 9 - Question 30

Compaction factor test is used to determine the workability of the fresh concrete mix. It is defined as the ratio of the weight of partially compacted concrete to fully compacted concrete.

For compaction factor = 0.65 – 0.7, the degree of workability is very low.

For compaction factor = 0.95 – 1, the degree of workability will be very high

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