UPSC Civil Service Exam Questions - Section 1 (7)

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UPSC Civil Service Exam Questions - Section 1

If you are looking for UPSC Civil Service Exam
Questions, then you are at right place. In this section you will find all the important MCQs on
this field.

49. 

The following steps are involved in laying a sewer in a trench :
1. Transferring the center line of the sewer to the bottom trench.
2. Setting sight rails over the trench.
3. Driving pegs to the level of the invert line of the sewer.
4. Placing the sewer of these steps is The correct sequence of these steps is
A. 1, 2, 3, 4
B. 2, 3, 4, 1
C. 4, 2, 3, 1
D. 2, 3, 1, 4

Answer: Option D

Explanation:

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50. 

Which type of light energy is effectively absorbed by CO2 in the lower boundary of the troposphere ?
A. X - rays
B. UV - rays
C. Visible light
D. Infra-red rays

Answer: Option D

Explanation:

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