Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than

A. 0.15
B. 0.12
C. 0.30
D. 1.00
Answer» C. 0.30
Discussion
2.

According to Whitney’s theory, ultimate strain of concrete is assumed to be

A. 0.03%
B. 0.1%
C. 0.3%
D. 3%
Answer» D. 3%
Discussion
3.

The critical section for finding maximum bending moment for footing under masonry wall is located

A. at the middle of the wall
B. at the edge of the wall
C. halfway between the middle and edge of the wall
D. at a distance equal to effective depth of footing from the edge of the wall
Answer» D. at a distance equal to effective depth of footing from the edge of the wall
Discussion
4.

The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel)

A. 0.37 fy
B. 0.57 fy
C. 0.67 fy
D. 0.87 fy
Answer» E.
Discussion
5.

Examine the following statements :i) Factor of safety for steel should be based on its yield stress,ii) Factor of safety for steel should be based on its ultimate stress,iii) Factor of safety for concrete should be based on its yield stress,iv) Factor of safety for concrete should be based on its ultimate stress.The correct statements are

A. (i) and (iii)
B. (i) and (iv)
C. (ii) and (iii)
D. (ii) and (iv)
Answer» C. (ii) and (iii)
Discussion
6.

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

A. 0.367 xu
B. 0.416 xu
C. 0.446 xu
D. 0.573 xu
Answer» C. 0.446 xu
Discussion
7.

In prestressed concrete

A. forces of tension and compression change but lever arm remains unchanged
B. forces of tension and compressions remain unchanged but lever arm changes with the moment
C. both forces of tension and compres-sion as well as lever arm change
D. both forces of tension and compres-sion as well as lever arm remain unchanged
Answer» C. both forces of tension and compres-sion as well as lever arm change
Discussion
8.

According to IS : 456-1978, the fiexural strength of concrete is

A. directly proportional to compressive strength
B. inversely proportional to compressive strength
C. directly proportional to square root of compressive strength
D. inversely proportional to square root of compressive strength
Answer» D. inversely proportional to square root of compressive strength
Discussion
9.

Assertion A : The load factor for live load is greater than that for dead load.Reason R : The live loads are more uncertain than dead loads.Select your answer based on the coding system given below :

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer» B. Both A and R are true but R is not the correct explanation of A.
Discussion
10.

The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone

A. compressive stress
B. shear stress
C. bond stress
D. tensile stress
Answer» D. tensile stress
Discussion
11.

Modulus of elasticity of steel as per IS : 456-1978 shall be taken as

A. 20 kN/cm²
B. 200 kN/cm²
C. 200kN/mm²
D. 2xl06N/cm²
Answer» D. 2xl06N/cm²
Discussion
12.

Maximum distance between expansion joints in structures as per IS : 456 – 1978 is

A. 20 m
B. 30 m
C. 45 m
D. 60 m
Answer» D. 60 m
Discussion
13.

If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to

A. xv
B. xc
C. Tv + Tc
D.
Answer» D.
Discussion
14.

Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?

A. elastic shortening of concrete
B. shrinkage of concrete
C. creep of concrete
D. loss due to friction
Answer» B. shrinkage of concrete
Discussion
15.

In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by

A. 10%
B. 20%
C. 30%
D. 40%
Answer» E.
Discussion
16.

For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

A. 0.75 - 0.80
B. 0.80 - 0.85
C. 0.85 - 0.92
D. Above 0.92
Answer» E.
Discussion
17.

If a beam fails in bond, then its bond strength can be increased most economi-cally by

A. increasing the depth of beam
B. using thinner bars but more in number
C. using thicker bars but less in number
D. providing vertical stirrups
Answer» C. using thicker bars but less in number
Discussion
18.

As compared to ordinary portland cement, use of pozzuolanic cement

A. reduces workability
B. increases bleeding
C. increases shrinkage
D. increases strength
Answer» D. increases strength
Discussion
19.

Most common method of prestressing used for factory production is

A. Long line method
B. Freyssinet system
C. Magnel-Blaton system
D. Lee-Macall system
Answer» B. Freyssinet system
Discussion
20.

The limits of percentage p of the longitudinal reinforce-ment in a column is given by

A. 0.15% to 2%
B. 0.8% to 4%
C. 0.8% to 6%
D. 0.8% to 8%
Answer» D. 0.8% to 8%
Discussion
21.

Prestress loss due to friction occurs

A. only in post-tensioned beams
B. only in pretensioned beams
C. in both post-tensioned and preten-sioned beams
D. none of the above
Answer» B. only in pretensioned beams
Discussion
22.

According to IS: 456-1978, the maximum reinforcement in a column is

A. 2 %
B. 4%
C. 6 %
D. 8 %
Answer» D. 8 %
Discussion
23.

Admixtures which cause early setting, and hardening of concrete are called

A. workability admixtures
B. accelerators
C. retarders
D. air entraining agents
Answer» C. retarders
Discussion
24.

For walls, columns and vertical faces of all structural members, the form work is generally removed after

A. 24 to 48 hours
B. 3 days
C. 7 days
D. 14 days
Answer» B. 3 days
Discussion
25.

For a continuous slab of 3 m x 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is

A. 50 mm
B. 75 mm
C. 100 mm
D. 120 mm
Answer» C. 100 mm
Discussion
26.

In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

A. zero
B. tensile
C. compressive
D. tensile or compressive
Answer» D. tensile or compressive
Discussion
27.

The maximum value of hoop compression in a dome is given by (where, w = load per unit area of surface of dome R = radius of curvature d = thickness of dome)

A. wR / 4d
B. wR/2d
C. wR/d
D. 2wR/d
Answer» C. wR/d
Discussion
28.

If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called

A. balanced beam
B. under-reinforced beam
C. over-reinforced beam
D. none of the above
Answer» D. none of the above
Discussion
29.

According to IS: 456-1978, the column or the strut is the member whose effective length is greater than

A. The least lateral dimension
B. 2 times the least lateral dimension
C. 3 times the least lateral dimension
D. 4 times the least lateral dimension
Answer» D. 4 times the least lateral dimension
Discussion
30.

The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by

A. tcr – rcs = tct
B. fcr>fcs>fc.
C. fcr<fcs</fcs
D. fc5>fcr>fC
Answer» C. fcr<fcs</fcs
Discussion
31.

For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is

A. 3.5 m
B. 4 m
C. 4.5 m
D. 5 m
Answer» B. 4 m
Discussion
32.

Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is

A. M15
B. M20
C. M10
D. M25
Answer» B. M20
Discussion
33.

Which of the following has high tensile strength ?

A. plain hot rolled wires
B. cold drawn wires
C. heat treated rolled wires
D. all have same tensile strength
Answer» C. heat treated rolled wires
Discussion
34.

Which of the following R.C. retaining walls is suitable for heights beyond 6m?

A. L-shaped wall
B. T-shaped wall
C. counterfort type
D. all of the above
Answer» D. all of the above
Discussion
35.

According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

A. 0.43 d
B. 0.55 d
C. 0.68 d
D. 0.85 d
Answer» B. 0.55 d
Discussion
36.

The effect of adding calcium chloride in concrete isi) to increase shrinkageii) to decrease shrinkageiii) to increase setting timeiv) to decrease setting timeThe correct answer is

A. (i) and (iii)
B. (i)and(iv)
C. (ii) and (iii)
D. (ii) and (iv)
Answer» C. (ii) and (iii)
Discussion
37.

In a counterfort retaining wall, the main reinforcement is provided on thei) bottom face in front counterfortii) inclined face in front counterfortiii) bottom face in back counterfortiv) inclined face in back counterEortThe correct answer is

A. (i) and (ii),
B. (ii) and (iii)
C. (i) and (iv)
D. (iii) and (iv)
Answer» D. (iii) and (iv)
Discussion
38.

Normally prestressing wires are arranged in the

A. upper part of the beam
B. lower part of the beam
C. center
D. anywhere
Answer» C. center
Discussion
39.

If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be

A. 0.35 d
B. 0.40 d
C. 0.45 d
D. dependent on grade of concrete also
Answer» C. 0.45 d
Discussion
40.

The load carrying capacity of a helically reinforced column as compared to that of a tied column is about

A. 5% less
B. 10% less
C. 5% more
D. 10% more
Answer» D. 10% more
Discussion
41.

To minimize the effect of differential settlement, the area of a footing should be designed for

A. Dead load only
B. Dead load + live load
C. Dead load + fraction of live load
D. Live load + fraction of dead load
Answer» D. Live load + fraction of dead load
Discussion
42.

The main reinforcement in the toe of a T- shaped R C. retaining wall is provided oni) top face parallel to the wallii) top face perpendicular to the walliii) bottom face paralleUo the walliv) bottom face perpendicular to the wallThe correct answer is

A. only (ii) is correct
B. (i) and (ii) are correct
C. (iii) and (iv) are correct
D. only (iv) is correct
Answer» E.
Discussion
43.

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided oni) bottom face near counterfortii) top face near counterfortiii) bottom face near centre of spaniv) top face near centre of spanThe correct answer is

A. only (i)
B. only (ii)
C. both (i) and (iv)
D. both (ii) and (iii)
Answer» D. both (ii) and (iii)
Discussion
44.

If the depth of neutral axis for a singly reinforced rectangular section is represented by kd in working stress design, then the value of k for balanced section

A. depends on as, only
B. depends on aCbC only
C. depends on both crst and acbc
D. is independant of both ast and acbc where d is the effective depth, ast is per-missible stress in steel in tension and ocbc is permissible stress in concrete in bending compression.
Answer» B. depends on aCbC only
Discussion
45.

Assertion&nbsp;A&nbsp;:&nbsp;For&nbsp;identical&nbsp;strength,&nbsp;a&nbsp;composite&nbsp;cement-lime&nbsp;mortar&nbsp;is&nbsp;preferred&nbsp;over&nbsp;cement&nbsp;mortar. Reason&nbsp;R&nbsp;:&nbsp;Composite&nbsp;cement-lime&nbsp;mortar&nbsp;has&nbsp;higher&nbsp;drying&nbsp;shrinkage&nbsp;than&nbsp;cement&nbsp;mortar. Select&nbsp;your&nbsp;answer&nbsp;based&nbsp;on&nbsp;the&nbsp;codes&nbsp;given&nbsp;below.&nbsp;Codes:

A. Both A and R is true and R is the correct explanation of A
B. Both A and R is true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
Answer» D. A is false but R is true
Discussion
46.

The&nbsp;timber&nbsp;floor&nbsp;not&nbsp;spanning&nbsp;on&nbsp;the&nbsp;masonry&nbsp;wall&nbsp;but&nbsp;properly&nbsp;anchored&nbsp;to&nbsp;the&nbsp;wall&nbsp;gives

A. Lateral restraint but not rotational restraint
B. Rotational restraint but not lateral restraint
C. Both lateral and rotational restraints
D. Neither lateral nor rotational restraint
Answer» B. Rotational restraint but not lateral restraint
Discussion
47.

Maximum&nbsp;slenderness&nbsp;ratio&nbsp;of&nbsp;load&nbsp;bearing&nbsp;walls&nbsp;for&nbsp;a&nbsp;dwelling&nbsp;having&nbsp;more&nbsp;than&nbsp;2&nbsp;storeys (i)&nbsp;Shall&nbsp;not&nbsp;exceed&nbsp;12&nbsp;if&nbsp;lime&nbsp;mortar&nbsp;is&nbsp;used (ii)&nbsp;Shall&nbsp;not&nbsp;exceed&nbsp;18&nbsp;if&nbsp;cement&nbsp;lime&nbsp;mortar&nbsp;1&nbsp;:&nbsp;2&nbsp;:&nbsp;9&nbsp;is&nbsp;used (iii)&nbsp;Shall&nbsp;not&nbsp;exceed&nbsp;24&nbsp;if&nbsp;cement&nbsp;mortar&nbsp;1&nbsp;:&nbsp;6&nbsp;is&nbsp;used

A. (i) and (ii) are correct
B. (ii) and (iii) are correct
C. (i) and (iii) are correct
D. (i) and (ii) and (iii) are correct
Answer» B. (ii) and (iii) are correct
Discussion
48.

Direct&nbsp;load&nbsp;carrying&nbsp;capacity&nbsp;of&nbsp;a&nbsp;brick&nbsp;masonry&nbsp;wall&nbsp;standing&nbsp;freely&nbsp;as&nbsp;against&nbsp;when&nbsp;it&nbsp;supports&nbsp;RC&nbsp;slab&nbsp;will&nbsp;be

A. More
B. Less
C. The same in both the cases
D. 100 %
Answer» C. The same in both the cases
Discussion
49.

For&nbsp;masonry&nbsp;built&nbsp;in&nbsp;1&nbsp;:&nbsp;1&nbsp;:&nbsp;6&nbsp;cement-lime-sand&nbsp;mix&nbsp;mortar&nbsp;or&nbsp;equivalent,&nbsp;the&nbsp;horizontal&nbsp;shear&nbsp;stress&nbsp;permissible&nbsp;on&nbsp;the&nbsp;area&nbsp;of&nbsp;a&nbsp;mortar&nbsp;bed&nbsp;joint&nbsp;is

A. 0.15 MPa
B. 0.125 MPa
C. 0.1 MPa
D. 0.075 MPa
Answer» B. 0.125 MPa
Discussion
50.

Rich&nbsp;cement&nbsp;mortars&nbsp;are&nbsp;more&nbsp;liable&nbsp;to&nbsp;cracking&nbsp;as&nbsp;compared&nbsp;to&nbsp;lean&nbsp;mortars&nbsp;because&nbsp;rich&nbsp;mortars&nbsp;have

A. High shrinkage
B. Less strength
C. Both (A) and (B)
D. None of above
Answer» B. Less strength
Discussion