Chemical Composition of Air (CBSE-NET (Based on NTA-UGC) Environmental Science (Paper-II)): Questions 11 - 17 of 17

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Question number: 11

» Chemical Composition of Air » Particles, Ions and Radicals in the Atmosphere

Appeared in Year: 2011

MCQ▾

Question

Chemical formula for CFC-113 is (December)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 12

» 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.

b.

c.

d.

Question number: 13

» 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 at 1 atm at is (December)

Choices

Choice (4) Response

a.

5.6

b.

20.0

c.

10.3

d.

15.2

Question number: 14

» Chemical Composition of Air » Particles, Ions and Radicals in the Atmosphere

Appeared in Year: 2013

MCQ▾

Question

Which of the following is not a reactive oxygen species? (December)

Choices

Choice (4) Response

a.

Hydroxyl ion

b.

Singlet oxygen

c.

Hydrogen peroxide

d.

Superoxide anion

Question number: 15

» Chemical Composition of Air » Particles, Ions and Radicals in the Atmosphere

MCQ▾

Question

Which of the following appears to contribute to global cooling rather than global warming?

Choices

Choice (4) Response

a.

Chlorofluorocarbons

b.

Methane

c.

Aerosols

d.

Nitrous oxide

Question number: 16

» Chemical Composition of Air » Thermochemical and Photochemical Reactions in Atmosphere

MCQ▾

Question

Which of the following are sources of Methane, a greenhouse gas?

1. Domestic Animals

2. Coal Mining

3. Wetlands

Select the correct answer using the code given below:

Choices

Choice (4) Response

a.

1 and 3 only

b.

2 only

c.

1,2 and 3

d.

1 and 2 only

Question number: 17

» Chemical Composition of Air » Chemical Speciation

MCQ▾

Question

The carbon-dioxide content in the Earth’s atmosphere is currently around 400 ppm. It is estimated that before 1500 AD, CO2 content in earth’s atmosphere was between 200 and 300 ppm. Which of the following greatly contributed this change?

Choices

Choice (4) Response

a.

World War I and II

b.

Invention of agriculture

c.

American Revolution

d.

Industrial Revolution

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