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PSC Civil Engg: Environmental Quiz 8

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Question 1

The presence of hardness in excess of permissible limit causes

Question 2

The reference pressure used in the determination of sound pressure level is

Question 3

Which one of the following statement is correct?

Question 4

Zero hardness of water is achieved by

Question 5

Primary treatment of sewage consist of ........

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Jan 3ESE & GATE CE