JEE Main 2024 · ChemistryNumerical answerNumerical valueEasyMulti-step

JEE Main 31 January 2024, Shift 1, Chemistry Q90

Question 90 of 90 in this shift, Chemistry question 30 of 30, Section B.

Molar mass of the salt from

\mathrm{NaBr}

\mathrm{NaNO_3}

\mathrm{KI}

and

\mathrm{CaF_2}

which does not evolve coloured vapours on heating with concentrated

\mathrm{H_2SO_4}

is __________ g mol

^{-1}

. (Molar mass in g mol

^{-1}

: Na : 23, N : 14, K : 39, O : 16, Br : 80, I : 127, F : 19, Ca : 40)

Official answer

NTA final key.

Chapter: Practical Chemistry (Qualitative Analysis)
Topic: Anion Analysis
Idea tested: Conc Acid Group Identification

Same topic in other shifts

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