Environmental Engineering in CE MCQs

Question 1

The biological decomposition of organic substances in wastes controlled conditions is called

Accepted Answer

Composting

Answer

Incineration

Answer

Biological oxidation

Answer

None of these

Question 2

Which of the following is not a secondary air pollutant?

Accepted Answer

Sulphur dioxide

Answer

Ozone

Answer

Photochemical smog

Answer

All of the above

Question 3

Arsenic pollutant is not generated in____industries.

Accepted Answer

Beverages

Answer

Tanneries

Answer

Glass & ceramic

Answer

Any of these

Question 4

Presence of bacteria in potable (drinking) water causes

Accepted Answer

Disease

Answer

Turbidity

Answer

Bad odour

Answer

Bad taste & colour

Question 5

The pH value of potable water should be between

Accepted Answer

6.5 to 8

Answer

1 to 1.5

Answer

13 to 14

Answer

4 to 5

Question 6

Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?

Accepted Answer

SO2

Answer

NOx

Answer

Hg

Answer

F

Question 7

'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'?

Accepted Answer

None of these

Answer

Dust & mists

Answer

Smoke & fumes

Answer

Photochemical smog & soot

Question 8

Algae growth in water is controlled by

Accepted Answer

Chlorination

Answer

Deoxidation

Answer

Bleaching

Answer

Aeration

Question 9

Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

Accepted Answer

All of the above

Answer

Conversion of CO into CO2 in the second compartment

Answer

Conversion of NOx into N2 and NH3 in the first compartment

Answer

Oxidation of unburnt hydrocarbon fuel in the second compartment