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JEE Main 2024 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 29 January 2024, Shift 1, Chemistry Q65

Question 65 of 90 in this shift, Chemistry question 5 of 30, Section A.

Identify the incorrect pair from the following :

(1)Cryolite $-$ $\mathrm{Na_3AlF_6}$
(2)Carnallite $-$ $\mathrm{KCl\cdot MgCl_2\cdot 6H_2O}$
(3)Fluorspar $-$ $\mathrm{BF_3}$ Official answer
(4)Fluoroapatite $-$ $\mathrm{3\ Ca_3(PO_4)_2\cdot CaF_2}$

Official answer

Option 3

NTA final key.

Chapter: General Principles and Processes of Isolation of Elements
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy

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 42 of the 174 JEE Main shifts held from 2017 to 2026.