Environmental Engineering in CE MCQs

Question 1

Disinfection of water is done to remove

Accepted Answer

Bacteria

Answer

Color

Answer

Bad taste

Answer

Foul odour

Question 2

Which of the following pollutants is absent in the emissions from a fertiliser plant?

Accepted Answer

CO

Answer

SO2 & SO3

Answer

NO2

Answer

NH3

Question 3

Which is a secondary air pollutant?

Accepted Answer

Photochemical smog

Answer

Sulphur dioxide

Answer

Nitrogen dioxide

Answer

Dust particles

Question 4

Which of the following is a secondary air pollutant?

Accepted Answer

Photochemical smog

Answer

Sulphur dioxide

Answer

Nitrogen dioxide

Answer

Dust particles

Question 5

Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by

Accepted Answer

Both A & B

Answer

Natural aeration of water stream

Answer

Photosynthetic action of algae

Answer

Neither A nor B

Question 6

The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel.

Accepted Answer

1

Answer

5

Answer

10

Answer

20

Question 7

Sulphur dioxide present in the industrial chimney exhaust gases causes

Accepted Answer

All of the above

Answer

Respiratory & lung disease

Answer

Reduction in plant's productivity owing to acid rain

Answer

Corrosion of building materials

Question 8

Which of the following is not a practical method of low level radioactive waste disposal?

Accepted Answer

Filling in steel crates and shooting it off out of earth

Answer

Dilution with inert material

Answer

Discharging to atmosphere through tall stacks after dilution

Answer

Disposing off in rivers & oceans

Question 9

Which of the following sources is responsible for maximum air pollution?

Accepted Answer

Automobiles exhaust

Answer

Industrial chimney exhaust

Answer

Forest fire

Answer

Photochemical oxidation of organic matter