CIL Coal India Environment Question Papers Answers 2019-20

CIL Coal India Environment Question Papers Answers 2019-20

CIL Coal India Environment Question Papers Answers CIL Recruitment Exam Written Test Paper on Environment Sample Model Question Papers with Answers CIL Coal India Environment Exam 2019-20.

Environment
Q1: The BOD removal in an oxidation pond may be up to
A. 100%
B. 97%
C. 94%
D. 90%
Correct Answer: D

Q2: When Chloride is added to sewage both at the beginning as well as at the end of the treatment process, the phenomenon is called:
A. Post chlorination
B. Super chlorination
C. Split chlorination
D. None of these
Correct Answer: C

 

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