Environmental Engineering in CE MCQs

Question 1

Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?

Accepted Answer

SO3

Answer

CO2

Answer

H2

Answer

N2

Question 2

The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the

Accepted Answer

Both B and C

Answer

Catalytic conversion

Answer

Green house effect

Answer

Global warming

Question 3

Maximum permissible turbidity in potable water is __________ ppm.

Accepted Answer

10

Answer

1

Answer

250

Answer

1000

Question 4

Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by

Accepted Answer

Quenching of hot coke

Answer

Discharging in the river stream

Answer

Filtration and recycling for cooling coke oven gas

Answer

None of these

Question 5

Pick out the wrong statement.

Accepted Answer

The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere

Answer

Stratosphere is rich in ozone and is located just above the troposphere

Answer

Troposphere is a turbulent dusty zone containing much of water vapor and clouds

Answer

The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms

Question 6

Presence of nitrates in water in excess of 50 ppm causes

Accepted Answer

Mathenoglobenemia

Answer

Gastroentetitis

Answer

Asphyxiation

Answer

Tooth decay

Question 7

The resistance of water to the passage of light through it is a measure of the

Accepted Answer

Turbidity

Answer

Color

Answer

Hardness

Answer

Dissolved gases

Question 8

Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes

Accepted Answer

All of the above

Answer

Fading of dyes on textiles

Answer

Corrosion, tarnishing & soiling of metals

Answer

Reduced strength of textiles

Question 9

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?

Accepted Answer

CO

Answer

SO2

Answer

NOx

Answer

CFC (chloro fluoro carbons)