Air (CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III)): Questions 5 - 9 of 23

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Question number: 5

» Air » Sources of Pollution

Appeared in Year: 2014

MCQ▾

Question

Which radioactive element is considered as an indoor pollutant? (December)

Choices

Choice (4) Response

a.

Radon

b.

Oxygen – 18

c.

Nitrogen – 15

d.

Carbon – 13

Question number: 6

» Air » Air Quality Standards

Appeared in Year: 2014

MCQ▾

Question

According to National Ambient Air Quality Standards the annual average concentration of SPM in a residential area should not exceed (December)

Choices

Choice (4) Response

a.

80 µg/m3

b.

100 µg/m3

c.

140 µg/m3

d.

200 µg/m3

Question number: 7

» Air » Primary and Secondary Pollutants

Appeared in Year: 2011

MCQ▾

Question

Nitrogen Oxides ( NOx ) consist of: (June NET Paper-2)

Choices

Choice (4) Response

a.

NO+NO2

b.

NO+NO2+N2O+N2O5

c.

NO+NO2+N2O5

d.

NO+NO2+N2O

Question number: 8

» Air » Sources of Pollution

Appeared in Year: 2015

MCQ▾

Question

Which of the following air pollutants are released by thermal power plants? - (June)

(1) Oxides of nitrogen (2) Oxides of Sulphur

(3) Ammonia (4) Carbon monoxide

Choose the correct answer:

Choices

Choice (4) Response

a.

1, 2 and 4 only

b.

1, 3 and 4 only

c.

1, 2, 3 and 4

d.

2 and 3 only

Question number: 9

» Air » Monitoring and Control of Air Pollution

Appeared in Year: 2015

MCQ▾

Question

Cement dust is characterized by very fine particulars. Which of the following air pollution control devices appropriate for removing them from hot exhaust gases emanating from cement kiln? – (June)

Choices

Choice (4) Response

a.

Venturi scrubber

b.

Electrostatic precipitator

c.

Cyclone

d.

Bag house

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