Civil Engineering Questions and Answers Part 4

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Civil Engineering Questions and Answers Part 4

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Q1 The split tensile strength of M 15 grade concrete when expressed percentage of its compressive strength is 
option 
1) 10 to 20 % 
2)15 to 20 % 
3) 20 to 25 % 
4) 25 to 30 %
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Q2 The approximate ratio between the strength of cement concrete at 7 days and at 28 days is 
option
1)3/4
2)2/3
3)1/2
4)1/3
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Q3 Modulus of elasticity of M25 concrete as determined by formula of IS :456 is 
option
1) 124500 MPa
2) 90125 MPa
3) 28500 MPa 
4) 16667 MPa 
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Q4 General shrinkage in cement concrete is caused by 
option
1)carbonation 
2) stressed due to external load 
3)drying with starting with a stiff  consistency 
4) drying with starting with a wetter consistency 

Q5 The optimum number of revolution over which concrete is to be mixed in a mixer machine is 
option 
1)10
2)20
3)50
4)100

Q6 As per IS code of practice ,concrete should be cured at 
option 
1)5 ℃
2)10 
3) 27 
4) 40 

Q7 The ratio of direct tensile strength to that of modulus of rupture of concrete is 
option
1) .25
2).5
3).75
4)1.0

Q8 Which one of the following aggregate gives maximum strength in concrete ?
option
1)Rounded aggregate 
2) Elongated aggregate 
3) Flakey aggregate 
4) Cubical 

Q9 Which of the following types concrete is most suitable in extreme cold climates 
option
1)Air- entrained concrete 
2) Ready mix concrete 
3) vacuum concrete 
4) coarse concrete 
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Q10 What is the range of fineness modulus of sand which is least suitable for making a good concrete 
option 
1) 3.5- 4.5
2) 2.9 - 3.2
3) 2.6 -2.9
4) 2.2 -2.6



answer
1)15 to 20 % 
2)2/3
3)28500 MPa 
4)drying with starting with a wetter consistency 
5)20
6) 27 
7).5
8)Cubical 
9)Air- entrained concrete 
10) 3.5- 4.5

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