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A compound (A) reacts with thionylchlori...

A compound (A) reacts with thionylchloride to give a compound (B). (B) reacts with magnesium to form a Grignard reagent which is treated with acetone and the product is hydrolysed to give 2-methyl butan-2-ol. What are the structural formulae of (A) and (B) ?

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The correct Answer is:
`{:(C_(2)H_(5)OH,C_(2)H_(5)Cl),("Ethyl alcohol","Ethyl chloride"),(X,Y):}`
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