JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 4 August 2021, Shift 1, Chemistry Q39

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

Which among the following cannot be prepared from Diborane?

(1) $\mathrm{H_3BO_3}$
(2) $\mathrm{NaBH_4}$
(3) $\mathrm{Na_2B_4O_7}$
(4) $\mathrm{B_2(CH_3)_6}$ Official answer

Official answer

Option 4

NTA final key.

Chapter: The p-Block Elements
Topic: Group 13 & 14
Idea tested: Preparation of Diborane

Same topic in other shifts

All Group 13 & 14 questions

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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.