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Q.

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: $C = 12 : H = 1 : O = 16$ )

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answer is 69.

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Detailed Solution

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Molecular formula of product is $C_{7} H_{6} O_{2}$
Percentage weight of carbon $= (\frac{84}{122} \times 100) = 68.85 %$

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