JEE Main 2020 — Alcohols Phenols And Ethers Question with Solution
From: JEE Main 2020 (Online) 6th September Evening Slot
Question
A solution of phenol in chloroform when treated
with aqueous NaOH gives compound P as a
major product. The mass percentage of carbon
in P is ______. (to the nearest integer)
(Atomic mass : C = 12; H = 1; O = 16)
(Atomic mass : C = 12; H = 1; O = 16)
Enter your answer
Show full solutionCorrect answer: 68.85
Correct answer
68.85
Step-by-step explanation
mass of Salicylaldehyde = 12 × 7 + 6 × 1 + 16 × 2 = 122
mass of carbon = 12 × 7 = 84
mass % of C in P = 100
= 68.85 % 69 %
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This is a previous-year question from JEE Main 2020, covering the Alcohols Phenols And Ethers 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.