Question with Answer ESE - Civil Engineering

1. Consider the following statements:
Perforated bricks are preferred in construction since
1. They are lighter
2. They are stronger than class 1 bricks
3. They have heat-insulating properties
4. They are cheaper and need less mortar 
Which of these statements are correct?
a. 1, 2, 3 and 4
b. 2 and 3 only
c. 1 and 3 only
d. 3 and 4 only 
Answer: (c)
2. The standard size of a brick is
a. 20 cm × 10 cm × 10 cm
b. 19 cm × 9 cm × 9 cm
c. 18 cm × 9 cm × 9 cm
d. 18 cm × 10 cm × 10 cm 
Answer: (b)
3. Consider the following statements:
More than 6% magnesium oxide by weight in cement results in
1. High early strength and high heat generation
2. Less tendency towards volume change and formation of cracks 
Which of these statements is/are correct?
a. 1 only
b. 2 only
c. Neither 1 nor 2
d. Both 1 and 2 
Answer: (c)
4. Fineness if cement is measured in the units of
a. Volume/mass
b. Mass/volume
c. Area/mass
d. Mass/area 
Answer: (c)
5. The initial setting time of cement depends most on
a. Tricalcium aluminate
b. Tricalcium silicate
c. Tricalcium aluminoferrite
d. Dicalcium silicate 
Answer: (a)
6. Consider the following statements:
Sand in cement mortar is used for
1. Increasing the strength
2. Reducing the shrinkage
3. Decreasing the surface area of the binding material
4. Decreasing the quantity of cement 
Which of these statements are correct?
a. 1, 2 and 4
b. 1, 2 and 3
c. 1, 3 and 4
d. 2, 3 and 4 
Answer: (b)
7. Consider the following statements:
1. The compressive strength of concrete decreases with increase in water-cement ratio of the concrete mixture.
2. Water is added to the concrete mix for hydration of cement and workability.
3. Creep and shrinkage of concrete are independent of the water-cement ratio in the concrete mix. 
Which of these statements are correct?
a. 1 and 4 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2 and 3 
Answer: (a)
8. According to the Indian Standard Specifications, concrete should be cured under a humidity of
a .90%
b. 80%
c. 70%
d. 60% 
Answer: (a)
9. Consider the following statements:
In a typical compression test with a cylindrical concrete specimen, failure is initiated by
1. Crushing in compression
2. Inclined shear failure
3. Longitudinal tensile cracks 
Which of these statements are correct?
a. 1 only
b. 2 only
c. 3 only
d. 1, 2 and 3 
Answer: (b)
10. If one intends to obtain the best workability of concrete, the preferred shape of aggregate is
a .Round
b. Annular
c. Triangular
d. Flinty 
Answer: (a)
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