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Civil Engineering - UPSC Civil Service Exam Questions

Exercise : UPSC Civil Service Exam Questions - Section 25
26.
An imaginary line passing through the optical centre of the objective and the optical centre of the eye-piece in the telescope of a surveying instrument is called the
horizontal axis
line of collimation
optical axis of the telescope
reference axis
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Which of the following air pollutants is/are responsible for photochemical smog ?
1. Oxides of nitrogen
2. Ozone
3. Unburnt hydrocarbons
4. Carbon monoxide
Select the correct answer from the codes given below :
1 alone
2, 3 and 4
1, 3 and 4
1 and 3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Consider the following statements :
Excess of sulphur in steel results in
1. red shortness
2. segregation
3. coldshortness.
Of these statements :
1 alone is correct
2 alone is correct
2 and 3 are correct
1 and 2 are correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Which one of the following pairs is not correctly matched ?
Declination : Horizontal angle between magnetic meridian & true meridian
Bowditch's rule : Employed to adjust closing error of a closed traverse
Deflection angle : Measured in case of open traverse instead of measuring included angle
Reconnaissance survey : Employed for detailed and precise survey
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Consider the following statements :
Some amount of chlorides is allowed in drinking water because
1. it helps in killing bacteria.
2. small quantity of chlorides adds to the taste
3. it is not injurious to human health.
4. it is not economical to remove it completely.
Which of these statements are correct ?
1, 2 and 4
1, 2 and 3
2, 3 and 4
1, 3 and 4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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