Environmental Awareness-Ozone Depletion (CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III)): Questions 1 - 6 of 7

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Question number: 1

» Environmental Awareness » Ozone Depletion

Appeared in Year: 2015

MCQ▾

Question

Atmospheric life times of CFCs is typically in the range: (December)

Choices

Choice (4) Response

a.

50 - 102 years

b.

152 – 210years

c.

140 - 200 years

d.

200 - 400 years

Question number: 2

» Environmental Awareness » Ozone Depletion

Appeared in Year: 2015

MCQ▾

Question

The wavelengths that are most important in the context of stratospheric ozone depletion are- (December)

Choices

Choice (4) Response

a.

700 - 900nm

b.

400 - 700nm

c.

280 - 320nm

d.

> 900nm

Question number: 3

» Environmental Awareness » Ozone Depletion

Appeared in Year: 2015

Assertion-Reason▾

Assertion (Ꭺ)

All types of aerosols contribute to radiative forcing (December)

Reason (Ꭱ)

Aerosol effectively absorb electromagnetic radiations

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 4

» Environmental Awareness » Ozone Depletion

Appeared in Year: 2014

MCQ▾

Question

Composition-wise halons are related to (December)

Choices

Choice (4) Response

a.

CFCs

b.

Hydrocarbons

c.

Peptides

d.

Halides

Question number: 5

» Environmental Awareness » Ozone Depletion

Appeared in Year: 2011

MCQ▾

Question

Ozone undergoes photolysis due to ultra-violet radiations of wavelength: (June NET Paper-2)

Choices

Choice (4) Response

a.

< 500 nm

b.

< 315 nm

c.

< 600 nm

d.

< 400 nm

Question number: 6

» Environmental Awareness » Ozone Depletion

Appeared in Year: 2011

MCQ▾

Question

Which of the following gases facilitates formation of tropospheric ozone? – (December)

Choices

Choice (4) Response

a.

CO2

b.

SO2

c.

NO2

d.

NH3

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