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Chemistry Question on Phenols

Which one among the following alcohols will give iodoform on treatment with iodine and sodium hydroxide?

A

C6H5−COH∣H−C6H5C_{6}H_{5}-\underset{\overset{|}{OH}}{C}H-C_{6}H_{5}

B

H3C−OHH_{3}C-OH

C

C6H5−COH∣H−CH3C_{6}H_{5}-\underset{\overset{|}{OH}}{C}H-CH_{3}

D

H3C−CH2COH∣H−C6H5H_3C-CH_{2}\underset{\overset{|}{OH}}{C}H-C_{6}H_{5}

Answer

C6H5−COH∣H−CH3C_{6}H_{5}-\underset{\overset{|}{OH}}{C}H-CH_{3}

Explanation

Solution

The compounds containing CH3−COH∣∣∣CH_3-\overset{\underset{|||}{OH}}{C} and
CH3−COH∣−HCH_3 -\overset{\underset{|}{OH}}{C} -H groups on heating with (aq) NaOH+I2NaOH +I_{2}
gives iodoform test (yellow ppt of iodoform).
Therefore, the compound, C6H5−COH∣H−CH3C _{6} H _{5}- \underset{\overset{|}{OH}}{C} H - CH _{3} gives iodoform test.