Hello Diploma Students in this article we have provided Concrete Technology Mcq Questions with Answers Pdf. In this Civil Engineering Concrete Technology Notes We have Selected 35 Important Questions from Previous Year Papers and Made A possible Set pf Questions which can Help Students in Preparation for Their Exams.
This Concrete Technology Mcq Questions Pdf Is Ideal for Candidates who are in 2nd Year of Polytechnic in Civil Engineering By Referring this Concrete Technology Mcq Diploma in Civil Engineering Students Can Practice for their Upcoming Exams. We Have Also Provided Concrete Technology MCQ Questions and Answers pdf Link at the end of the Quiz You can Download it for Future Refrence.
22305 Concrete Technology Mcq Diploma in Civil Engineering
1) Properties of fine aggregate
(a) Size
(b) Source
(c) Shape
(d) Specific gravity
(e) All of the above
Correct!
Wrong!
2) Methods of curing
(a) Water curing
(b) Application of heat
(c) Membrane curing
(d) Miscellaneous methods
(e) All of the above
Correct!
Wrong!
3) Material used for filling joints
(a) Fibre and fibre products
(b) Sponge rubber
(c) Cork
(d) All of the above
Correct!
Wrong!
4) Concrete gains strength due to
(A) Chemical reaction of cement with sand and coarse aggregates
(B) Evaporation of water from concrete
(C) Hydration of cement
(D) All the above
Correct!
Wrong!
5) To determine the modulus of rupture, the size of test specimen used is
(A) 150 × 150 × 500 mm
(B) 100 × 100 × 700 mm
(C) 150 × 150 × 700 mm
(D) 100 × 100 × 500 mm
Correct!
Wrong!
6) Tricalcium aluminate (C3A)
(A) Reacts fast with water
(B) Generates less heat of hydration
(C) Causes initial setting and early strength of cement
(D) Does not contribute to develop ultimate strength
Correct!
Wrong!
7) If the various concrete ingredients i.e. cement, sand and aggregates are in the ratio of 1:3:6, the grade of concrete, is26) Grading of sand causes great variation in
(A) M 100
(B) M 150
(C) M 200
(D) M 250
Correct!
Wrong!
8) Admixtures which cause early setting and hardening of concrete are called
(A) Workability admixtures
(B) Accelerators
(C) Retarders
(D) Air entraining agents
Correct!
Wrong!
9) Pick up the correct statement from the following:
(A) Sand stones may be divided into calcareous, siliceous and ferruginous sandstone
(B) Concrete using sand stones, cracks due to excessive shrinkage
(C) Broken bricks produce a concrete having good fire resisting qualities
(D) All the above
Correct!
Wrong!
10) Pick up the incorrect statement from the following:
(A) Admixtures accelerate hydration
(B) Admixtures make concrete waterproof
(C) Admixtures make concrete acid proof
(D) Admixtures give high strength
Correct!
Wrong!
11) For a reinforced concrete section, the shape of shear stress diagram is
(A) Wholly parabolic
(B) Wholly rectangular
(C) Parabolic above neutral axis and rectangular below neutral axis
(D) Rectangular above neutral axis and parabolic below neutral axis
Correct!
Wrong!
12) For ensuring quality of concrete, use
(A) Single sized aggregates
(B) Two sized aggregate
(C) Graded aggregates
(D) Coarse aggregates
Correct!
Wrong!
13) 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 %
Correct!
Wrong!
14) Workability improved by adding
(A) Air-entraining agent
(B) Foaming agent
(C) Oily-agent
(D) All the above
Correct!
Wrong!
15) 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)
(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
Correct!
Wrong!
16) The rock which is not calcareous, is:
(A) Limestone
(B) Chalk
(C) Laterite
(D) None of these
Correct!
Wrong!
17) A T-shaped retaining wall mainly consists of
(A) One cantilever
(B) Two cantilevers
(C) Three cantilevers
(D) Four cantilevers
Correct!
Wrong!
18) Pick up the correct statement from the following:
(A) Insufficient quantity of water makes the concrete mix harsh
(B) Insufficient quantity of water makes the concrete unworkable
(C) Excess quantity of water makes the concrete segregated
(D) All the above
Correct!
Wrong!
19) The fineness modulus of fine aggregate is in the range of
(A) 2.0 to 3.5
(B) 3.5 to 5.0
(C) 5.0 to 7.0
(D) 6.0 to 8.5
Correct!
Wrong!
20) After casting, an ordinary cement concrete on drying
(A) Expands
(B) Mix
(C) Shrinks
(D) None of these
Correct!
Wrong!
21) The maximum thickness of concrete floor of a cement warehouse, is
(A) 10 cm
(B) 15 cm
(C) 20 cm
(D) 25 cm
Correct!
Wrong!
22) Too wet concrete may cause
(A) Weakness of concrete
(B) Excessive laitance
(C) Segregation
(D) All the above
Correct!
Wrong!
23) Maximum percentage reinforcement in case of slabs is limited to
(A) 2
(B) 4
(C) 6
(D) 8
Correct!
Wrong!
24) The commonly used material in the manufacture of cement is
(A) Sand stone
(B) Slate
(C) Limestone
(D) Graphite
Correct!
Wrong!
25) According to I.S. : 456, the number of grades of concrete mixes, is
(A) 3
(B) 4
(C) 5
(D) 7
Correct!
Wrong!
26) Grading of sand causes great variation in
(A) Workability of concrete
(B) Strength of concrete
(C) Durability of concrete
(D) All the above
Correct!
Wrong!
27) The percentage of the aggregate of F.M. 2.6 to be combined with the coarse aggregate of F.M. 6.8 for obtaining the aggregates of F.M. 5.4, is
(A) 30 %
(B) 40 %
(C) 50 %
(D) 60 %
Correct!
Wrong!
28) Fiber reinforced concrete
(a) Cooling towers
(b) Useful in canal lining, refractory lining
(c) Construction of special structures like atomic power stations, satellite launching stations, heavy duty runways, etc.
(c) Construction of special structures like atomic power stations, satellite launching stations, heavy duty runways, etc.
Correct!
Wrong!
29) Causes of Bleeding of concrete
(a) Use of more flaky aggregates.
(b) Insufficient mixing of concrete.
(b) Insufficient mixing of concrete.
(d) Excessive or over vibration.
(e) Both (a) & (b)
Correct!
Wrong!
30) Uses of Retarding Admixture
(a) It is beneficial where rapid hardening of concrete is necessary i.e. in case of high rise structures.
(b) It is useful where quick setting is required i.e. in underwater construction
(c) It is useful where slow setting of concrete is required i.e. in extreme hot weather concreting
(d) All of the above
Correct!
Wrong!
31) Self-compacting concrete
(a) Useful in fabrication of precast products like pipes, boats, beams, staircase steps, wall panels etc.
(b) Industrial floor sheds
(c) Highly reinforced sections i.e. large bridge and machine foundations
(d) Bridges, ports and harbours
Correct!
Wrong!
32) Vacuum concrete is the concrete in which entrained air and excess water form a concrete mix is taken out from a vacuum pump, called vacuum concrete.
(a) True
(b) False
Correct!
Wrong!
33) The concrete made up of using one or more types of fibers in the concrete mix, is known as fiber reinforced concrete.
(a) True
(b) False
Correct!
Wrong!
34) Self-compacting concrete is the concrete which settles down under its own weight so that it does not require any type of external vibration for its compaction.Â
(a) True
(b) False
Correct!
Wrong!
35) Rebound hammer test is used to estimate the concrete strength using Williams testing pistol and impact hammer
(a) True
(b) False
Correct!
Wrong!
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