TestHub
TestHub

Chemistry - Environmental Chemistry Question with Solution | TestHub

ChemistryEnvironmental ChemistryAir PollutionMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension

In summer season, nitrogen dioxide and methane react with chlorine monoxide (reaction iv) and chlorine atoms (reaction v) forming chlorine sinks, preventing much ozone depletion, whereas in winter, special type of clouds called polar stratospheric clouds provide surface on which chlorine nitrate formed (reaction iv) gets hydrolysed to form hypochlorous acid (reaction (vi)). It also reacts with hydrogen chloride produced as per reaction (v) to give molecular chlorine.

image.png

When sunlight returns to the Antarctica in the spring, the sun's warmth breaks up the clouds and HOCl and Cl2 are photolysed by sunlight, as given in reactions (viii) and (ix).

image.png

The chlorine radicals thus formed, initiate the chain reaction for ozone depletion.

Which of the following species are responsible for ozone depletion

Options:

Answer:
C
Solution:

Question Explanation: The species responsible for ozone depletion.

Concept: This question is based on ozone depletion.

Solution:

image.png

Stream:JEESubject:ChemistryTopic:Environmental ChemistrySubtopic:Air Pollution
2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...