Environmental Engineering in CE MCQs

Question 1

Smog is

Accepted Answer

A combination of smoke and fog

Answer

Nothing but black smoke

Answer

A liquid particle resulting from vapor condensation

Answer

A solid particle e.g. flyash

Question 2

Smoke is produced due to

Accepted Answer

All of the above

Answer

Insufficient supply of combustion air and insufficient time for combustion

Answer

Poor quality of fuel and improper mixing of fuel & combustion air

Answer

Poor design & overloading of furnace

Question 3

Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage?

Accepted Answer

Carbon monoxide

Answer

Smog & ozone

Answer

Hydrogen fluoride & nitrogen oxides

Answer

Sulphur dioxide & spray of weed killers

Question 4

What are the methods of treatment & disposal of radioactive wastes?

Accepted Answer

All of the above

Answer

Evaporation & chemical precipitation

Answer

Biological methods & adsorption in ion exchange materials

Answer

Fixing into a solid mass with cement and sinking deep in the sea

Question 5

Workers working in __________ industry are most prone to white lung cancer.

Accepted Answer

Textile

Answer

Coal mining

Answer

Limestone mining

Answer

Asbestos

Question 6

Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes

Accepted Answer

All of the above

Answer

Blood poisoning

Answer

Anaemia

Answer

Nervous system disorder

Question 7

The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU).

Accepted Answer

230

Answer

20

Answer

750

Answer

1500

Question 8

For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.

Accepted Answer

5

Answer

10000

Answer

500

Answer

1000

Question 9

__________ can not control the noise pollution.

Accepted Answer

Green house gases

Answer

Use of silencers

Answer

Vibration damping

Answer

Tree plantation