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Civil Set-1
Environmental Engineering
63

Environmental Engineering MCQ with Answers

63) The suitable method for disinfection of swimming pool water is

ultra violet rays treatment

lime treatment

by using potassium permanganate

chlorination

Answer is:

ultra violet rays treatment

Environmental Engineering MCQ with Answers

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Related Environmental Engineering MCQ with Answers

64) Which of the following chemical compounds can be used for dechlorination of water

carbon dioxide

bleaching powder

sulphur dioxide

chloramines

Answer is:

sulphur dioxide

65) In chlorination, with the rise in temperature of water, death rate of bacteria

increases

decreases

remains unaffected

none of the above

Answer is:

increases

66) As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is

smaller

larger

same

none of the above

Answer is:

smaller

67) Disinfection efficiency is

reduced at higher pH value of water

unaffected by pH value of water

increased at higher pH value of water

highest at pH value equal to 7

Answer is:

reduced at higher pH value of water

Environmental Engineering MCQ with Answers

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