JEE Main 2021 — Environmental Chemistry Question with Solution
From: JEE Main 2021 (Online) 25th July Evening Shift
Question
Given below are two statements :
Statement I : Chlorofluoro breakdown by radiation in the visible energy region and release chlorine gas in the atmosphere which then reacts with stratospheric ozone.
Statement II : Atmospheric ozone reacts with nitric oxide to give nitrogen and oxygen gases, which add to the atmosphere.
For the above statements choose the correct answer from the options given below :
Statement I : Chlorofluoro breakdown by radiation in the visible energy region and release chlorine gas in the atmosphere which then reacts with stratospheric ozone.
Statement II : Atmospheric ozone reacts with nitric oxide to give nitrogen and oxygen gases, which add to the atmosphere.
For the above statements choose the correct answer from the options given below :
Choose an option
Show full solutionCorrect option: B
Correct answer
BBoth Statement I and II are false
Step-by-step explanation
Statement (1)
CFCs are broken down by powerful UV radiation and releases chlorine free radical which reacts with ozone and start chain reaction.
Statement (2)
Atmosphere ozone reacts with nitric oxide to produce nitrogen dioxide and oxygen.
CFCs are broken down by powerful UV radiation and releases chlorine free radical which reacts with ozone and start chain reaction.
Statement (2)
Atmosphere ozone reacts with nitric oxide to produce nitrogen dioxide and oxygen.
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This is a previous-year question from JEE Main 2021, covering the Environmental Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.