The depletion of ozone layer in the upper atmosphere is mainly due to the emission of :
(a) unburnt hydrocarbons
(b) chlorofluorocarbons
(c) greenhouse gases
(d) ultraviolet radiations

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Solution

(b) chlorofluorocarbons

Chlorofluorocarbons emitted by air-conditioners, refrigerators and jet planes cause the depletion of the ozone layer.

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Question 6
Depletion of ozone is mainly due to

(a) chlorofluorocarbon compounds
(b) carbon monoxide
(c) methane
(d) pesticides

Q74) How are Green House Effect and Ozone layer depletion related?

i) Greenhouse effect causes ozone layer depletion

ii) Ozone layer depletion causes greenhouse effect.

iii) There is no relation between the two phenomena.

iv) Chlorofluorocarbons are one of the culprits in both the cases.

Which of the above statements are true?

Ozone layer depletion is mainly caused due to ___.

(CFCs/methane/nitrogen oxides)

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