In the stratosphere, which of the following element acts as a catalyst in the degradation of ozone and release of molecular oxygen?

1. Carbon
2. Cl
3. Fe
4. Oxygen

Subtopic:  Ozone Layer Depletion |
 85%
From NCERT
NEET - 2018
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World Ozone Day is celebrated on?

1. 5th June
2. 21st April
3. 16th September
4. 22nd April

Subtopic:  Ozone Layer Depletion |
 62%
NEET - 2018
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Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers
(1) ozone

(2) ammonia 

(3) methane

(4) nitrous oxide

Subtopic:  Ozone Layer Depletion |
 93%
From NCERT
NEET - 2016
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