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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceOtherEasyRecall

JEE Main 26 February 2021, Shift 1, Chemistry Q35

Question 35 of 90 in this shift, Chemistry question 5 of 30, Section A.

Statements about heavy water are given below. A. Heavy water is used in exchange reactions for the study of reaction mechanisms. B. Heavy water is prepared by exhaustive electrolysis of water. C. Heavy water has higher boiling point than ordinary water. D. Viscosity of H2O\mathrm{H_2O} is greater than D2O\mathrm{D_2O}. Choose the most appropriate answer from the options given below :
  1. (1)A and B only
  2. (2)A and C only
  3. (3)A and D only
  4. (4)A, B and C onlyOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Hydrogen
Topic
Hydrogen and Hydrides
Idea tested
Heavy Water Properties

Same idea in other shifts

Asked 2× in all
  1. 17 Mar 2021, Shift 1 · Q35The INCORRECT statement(s) about heavy water is (are) (A) used as a moderator in nuclear reactor (B) obtained as a by-product in…EasyOther

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.