Explore topic-wise MCQs in Construction Materials.

This section includes 116 Mcqs, each offering curated multiple-choice questions to sharpen your Construction Materials knowledge and support exam preparation. Choose a topic below to get started.

101.

On an average, in a 125 mm slump, the concrete may lose about (in first one hour)

A. 15 mm of a slump
B. 25 mm of a slump
C. 40 mm of a slump
D. 50 mm of a slump
Answer» E.
Discussion
102.

Organic compounds that are responsible for the formation of tiny bubbles and holes of different sizes in concrete, which form a certain part of the aggregate concrete, are called:

A. Water retarder
B. Pozolana
C. Bonding admixture
D. Air-entrainment agents
Answer» E.
Discussion
103.

As per IS 456:2000, the permissible limit for sulphates in water is

A. 200 mg / l
B. 3000 mg / l
C. 400 mg / l
D. ​2000 mg / l
Answer» D. ​2000 mg / l
Discussion
104.

Grade M20 has a nominal mix of:

A. 1 : 05 : 10
B. 1 : 2 : 4
C. 1 : 03 : 06
D. 1 : 1.5 : 3
Answer» E.
Discussion
105.

A construction joint is provided where:

A. bending moment is small
B. shear force is small
C. the member is supported by other member
D. All option are correct
Answer» E.
Discussion
106.

Concrete mix proportioning guidelines are given by:

A. IS 875(Part-1) – 1987
B. IS 456-2000
C. IS 10262-2009
D. IS 800-2007
Answer» D. IS 800-2007
Discussion
107.

THE_STRENGTH_OF_WELL_COMPACTED_CONCRETE_WITH_GOOD_WORKABILITY_IS_DEPEND_ONLY_ON_THE__________?$

A. Water content
B. Cement content
C. Water-cement ratio
D. Water-soaked ratio
Answer» D. Water-soaked ratio
Discussion
108.

According_to_the____________law_given_by_Abram_as_a_result_of_many_experiments,_the_strength_of_well_compacted_concrete_with_good_workability_is_dependent_only_on_the_water_cement_ratio.$

A. Water content law
B. Water-cement ratio law
C. Water-sand ratio law
D. Cement content law
Answer» C. Water-sand ratio law
Discussion
109.

________ method is based on the principle that the densest concrete is achieved by proportioning its aggregate in such a manner that the heaviest weight of concrete for same volume is obtained?

A. Minimum void method
B. Arbitrary method
C. Water-cement ratio method
D. Maximum void method
Answer» E.
Discussion
110.

In ________ Method, the voids of coarse aggregate and fine aggregate are determined separately.

A. Arbitrary method
B. Minimum void method
C. Maximum void method
D. Optimum void method
Answer» C. Maximum void method
Discussion
111.

In ________ method, the fineness modulus of sand and aggregate is determined by the standard tests.

A. Fineness modulus method
B. Minimum void method
C. Arbitrary method
D. Maximum void method
Answer» B. Minimum void method
Discussion
112.

For lean concrete bases and simple foundation for masonry walls, _________ grades of concrete may be used.

A. M40 and M35
B. M5 and M7.5
C. M10 and M20
D. M1.5 and M2.5
Answer» C. M10 and M20
Discussion
113.

1:2:4, 1:3:6, etc. Are used in which method of volumetric proposition.

A. Minimum void method
B. Water-cement ratio method
C. Arbitrary method
D. Finesse modulus method
Answer» D. Finesse modulus method
Discussion
114.

In _______ method of volumetric proportions, the proportions of cement, sand and coarse aggregate are fixed or beta really such as 1:2:4 or 1:3:6 etc.

A. Minimum void method
B. Maximum void method
C. Water-cement ratio method
D. Arbitrary method
Answer» E.
Discussion
115.

The theory of formation of __________ is based on the phenomenon of formation of voids.

A. Concrete
B. Cement
C. Water-cement
D. Slurry
Answer» B. Cement
Discussion
116.

The process of selection of relative proportions of cement, sand, course aggregate and water, so as to obtain a concrete of desired quantity is known as the ________

A. Proportioning of reinforcement
B. Proportioning of concrete
C. Proportioning of cement
D. Proportioning of water
Answer» C. Proportioning of cement
Discussion