Environmental Engineering in CE MCQs

Question 1

Inhalation of silica dust causes a disease called

Accepted Answer

Silicosis

Answer

Bronchitis

Answer

Pneumoconiosis

Answer

None of these

Question 2

White smoke coming out of the chimney of a furnace indicates the use of

Accepted Answer

Very high excess air

Answer

Low excess air

Answer

Gaseous fuel in the furnace

Answer

Liquid fuel in the furnace

Question 3

Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur?

Accepted Answer

Troposphere

Answer

Thermosphere

Answer

Stratosphere

Answer

None of these

Question 4

Ethanolamine is an absorbant used for the removal of __________ from air/gas.

Accepted Answer

Both B & C

Answer

HF

Answer

SO2

Answer

H2S

Question 5

__________ substances present in sewage are removed in grit chamber during sewage treatment.

Accepted Answer

Inorganic

Answer

Organic

Answer

Fatty

Answer

Dissolved

Question 6

H2S present in gaseous stream can be removed by adsorption on

Accepted Answer

Bog iron

Answer

Silica gel

Answer

Active carbon

Answer

Limestone powder

Question 7

Presence of soluble organics in polluted water causes

Accepted Answer

Depletion of oxygen

Answer

Undesirable plants growth

Answer

Fire hazards

Answer

Explosion hazards

Question 8

High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes

Accepted Answer

Cancer

Answer

Silicosis

Answer

Respiratory disease (e.g., asthma)

Answer

Reduced crop yield

Question 9

TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm.

Accepted Answer

5

Answer

100

Answer

1000

Answer

2000