JEE Main 2022ChemistryHydrocarbonsHardNumerical

JEE Main 2022 — Hydrocarbons Question with Solution

JEE Main 2022 (27 Jul Shift 1)

Question

In the following reaction

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The % yield for reaction I is 60% and that of reaction II is 50%. The overall yield of the complete reaction is%

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Show full solutionCorrect answer: 30
Correct answer
30

Step-by-step explanation

Let initial moles of reactant taken =n
Total moles obtained for benzene sulphonic acid (with % yield =60%) =0.6 n

Moles of benzene sulphonic acid before reaction II=0.6 n

Moles obtained for phenol (with % yield = 50%) =0.6×0.5 n=0.3 n

So over all % yield of complete reaction =0.3nn×100=30

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About this question

This is a previous-year question from JEE Main 2022, covering the Hydrocarbons chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.