Chemical Composition of Air-Chemistry of Air Pollutants (CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III)): Questions 1 - 3 of 3

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Question number: 1

» Chemical Composition of Air » Chemistry of Air Pollutants

Appeared in Year: 2015

MCQ▾

Question

Trichloromonofluoromethane is:

(1) Freon – 11

(2) A spray can propellant

(3) A chlorofluorocarbon

Choose the correct answer: (June)

Choices

Choice (4) Response

a.

1, 2 and 3

b.

1 and 3 only

c.

2 and 3 only

d.

1 only

Question number: 2

» Chemical Composition of Air » Chemistry of Air Pollutants

Appeared in Year: 2011

MCQ▾

Question

The primitive atmosphere of earth consisted of – (December)

Choices

Choice (4) Response

a.

CO2,NO2,NH3,SO2

b.

CO,N2O3,SO3,H3N

c.

He,Ne,Ar,Kr

d.

H2,NH3,CH4,H2O

Question number: 3

» Chemical Composition of Air » Chemistry of Air Pollutants

Appeared in Year: 2013

MCQ▾

Question

If air quality standard for carbon monoxide is 9.0 ppmV, the percentage as in mgm3 at 1 atm at 25 is (December)

Choices

Choice (4) Response

a.

5.6 mgm3

b.

20.0 mgm3

c.

10.3 mgm3

d.

15.2 mgm3

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