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  4. 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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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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Solution:

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Molecular weight of $C _{7} H _{6} O _{2}=122$

$\% C=\frac{12 \times 7 \times 100}{122}=68.85 \approx 69$