Which of the following will give acetaldehyde | vedclass

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(B) The reaction of $1, 1-$ dichloroethane $(CH_3CHCl_2)$ with aqueous $KOH$ undergoes nucleophilic substitution to form a geminal diol $(CH_3CH(OH)_2

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$1, 1-$ Dichloroethane

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(B) The reaction of $1, 1-$ dichloroethane $(CH_3CHCl_2)$ with aqueous $KOH$ undergoes nucleophilic substitution to form a geminal diol $(CH_3CH(OH)_2)$.Since geminal diols are unstable,they lose a water molecule to form acetaldehyde $(CH_3CHO)$.The reaction is: $CH_3CHCl_2 + 2KOH(aq)$ $\rightarrow CH_3CH(OH)_2 + 2KCl$ $\rightarrow CH_3CHO + H_2O + 2KCl$.

Which of the following will give acetaldehyde upon reaction with aqueous $KOH$?

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