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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 27 August 2021, Shift 2, Chemistry Q39

Question 39 of 90 in this shift, Chemistry question 9 of 30, Section A.

In stratosphere most of the ozone formation is assisted by :
  1. (1)γ-rays.
  2. (2)visible radiations.
  3. (3)ultraviolet radiation.Official answer
  4. (4)cosmic rays.

Official answer

Option 3

NTA final key.

Chapter
Environmental Chemistry
Topic
Environmental Chemistry
Idea tested
Stratospheric Ozone Formation

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.