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SSC JE CE 2017- Environmental Engineering Rankers Quiz 1

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Question 1

Which of the following is not a primary air pollutant?

Question 2

If initial D.O. of a sewage sample is 6mg/1 and final D.O. is 2 mg/l. the dilution is 1%. Then the BOD of the sample is

Question 3

Ozonation in water treatment is done for which of the process :

Question 4

Anaerobic treatment is best suited for ______.

Question 5

The oxidant used for the determination of COD in

Question 6

Good quality sand is never obtained from

Question 7

The most common cause of acidity in water is :

Question 8

If the average daily water consumption of a city is 1000 cum the peak hourly demand will be:

Question 9

The process involved in chlorination after breakpoint chlorination are

Question 10

The ratio of design discharge to the surface area of a sedimentation is called:
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Aug 11ESE & GATE CE