Environmental Engineering

Question: Most of the atmospheric air pollutants are present in large quantity in
[A].

stratosphere

[B].

thermosphere

[C].

trophosphere

[D].

mesosphere

Answer: Option C

Explanation:

No answer description available for this question.

Question: Methyl iso-cynate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of __________ toxic gas.
[A].

moderately

[B].

highly

[C].

extremely

[D].

very extremely

Answer: Option D

Explanation:

No answer description available for this question.

Question: Hazardous/polluting chemical industries should have an ‘exclusion zone’ with a green belt and general public access prohibited around it, covering a radius of ____ metres.
[A].

100

[B].

1000

[C].

400

[D].

4000

Answer: Option B

Explanation:

No answer description available for this question.

Question: Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).
[A].

highly

[B].

moderately

[C].

extremely

[D].

very extremely

Answer: Option B

Explanation:

No answer description available for this question.

Question: Nitrogen oxides (NOx) is not produced in the __________ industry.
[A].

nitric acid making

[B].

nitrogenous fertiliser

[C].

detergent

[D].

any of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Arsenic pollutant is not generated in____industries.
[A].

tanneries

[B].

glass & ceramic

[C].

beverages

[D].

any of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre.
[A].

2

[B].

42

[C].

332

[D].

1050

Answer: Option B

Explanation:

No answer description available for this question.

Question: Noise level in a quiet private business office is about __________ decibels.
[A].

25

[B].

50

[C].

70

[D].

85

Answer: Option B

Explanation:

No answer description available for this question.

Question: Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.
[A].

120

[B].

140

[C].

170

[D].

200

Answer: Option C

Explanation:

No answer description available for this question.

Question: Noise level inside a jet air liner in normal flight is about __________ decibels.
[A].

80

[B].

100

[C].

125

[D].

145

Answer: Option B

Explanation:

No answer description available for this question.