Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?

A

CO

B

SO₂

C

NO_x

D

CFC (chloro fluoro carbons)

Ozone depletion in the stratosphere is mainly caused by

A

SO₂

B

NO₂

C

NO

D

Chlorofluorocarbons

which one among the following is responsible for formation of 'Ozone Holes' in the stratosphere?

A

Chloro Fluoro Carbons

B

Benzopyrene

C

Hydrocarbons

D

UV radiation

which one among the following is responsible for formation of 'Ozone Holes 'in the stratosphere?

A

Chloro Fluoro Carbons

B

Bnropyrene

C

Hydrocarbons

D

UV radiation

The presence of ozone in the stratosphere is responsible for

A

Increasing the average global temperature in recent years

B

Higher rate of photosynthesis

C

Checking the penetration of ultraviolet rays to the earth

D

Supplying oxygen for people travelling in jets

The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU).

A

20

B

230

C

750

D

1500

Under the depletion allowance method in computing depreciation, the depletion charge is equal to either ______ whichever is smaller.

A

Fixed percentage of gross income or the net taxable income

B

Fixed percentage of gross income or 50% of the net taxable income

C

50% of the fixed percentage of gross income or 50% of the net taxable income

D

50% of the fixed percentage of gross income or the net taxable income

The depletion allowance method of computing depletion is commonly known as ______.

A

Unit method

B

Percentage method

C

Factor method

D

Sinking fund method

Release of which among the following is the primary reason for depletion of the ozone layer?

A

Nitrous oxide

B

Hydrogen dioxide

C

Chlorofluro carbon

D

Carbon monoxide

Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?

A

Chlorofluorocarbons

B

Nitrous oxide

C

Sulphur dioxide

D

Carbon dioxide

Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

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