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JEE Main 2023 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 13 April 2023, Shift 2, Chemistry Q68

Question 68 of 90 in this shift, Chemistry question 8 of 30, Section A.

Identify the correct order of standard enthalpy of formation of sodium halides.

(1) $\mathrm{NaF < NaCl < NaBr < NaI}$
(2) $\mathrm{NaI < NaBr < NaCl < NaF}$ Official answer
(3) $\mathrm{NaI < NaBr < NaF < NaCl}$
(4) $\mathrm{NaCl < NaF < NaBr < NaI}$

Official answer

Option 2

NTA final key.

Chapter: Thermodynamics (Chemistry)
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.