Civil Engineering - UPSC Civil Service Exam Questions

41. 

A dry soil has a mass specific gravity of 1.35. If the specific gravity of solids is 2.7, then the void ratio will be

A. 0.5
B. 1.0
C. 1.5
D. 2.0

Answer: Option B

Explanation:

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42. 

The change in the vertical stress in the soil mass estimated by Boussinesq's equation when Poisson's ratio of soil changes from 0.3 to 0.5 will be

A. reduction by 30%
B. increase by 50%
C. reduction by 20%
D. no change

Answer: Option B

Explanation:

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43. 

Which one of the following in NOT as excavating the moving type of equipment ?

A. Bulldozer
B. Clam shell
C. Scraper
D. Dump truck

Answer: Option D

Explanation:

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44. 

When was the water (Prevention and Control of Pollution). Act enacted by the Indian Parliament ?

A. 1970
B. 1974
C. 1980
D. 1985

Answer: Option B

Explanation:

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45. 

In Lacey's regime theory, the velocity of flow is proportional to :

A. Qf2
B. Q/f2
C. (Qf2)1/6
D. (Q/f2)1/6

Answer: Option C

Explanation:

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