An organic compound 'X' having molecular form | vedclass

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Question

(A) Compound '$X$' yields phenylhydrazone $\Rightarrow$ Presence of $C=O$ group.Negative iodoform test $\Rightarrow$ Absence of $CH_3-C=O$ group.Negat

Vedclass · Accepted Answer

$3-$pentanone

Vedclass · Answer

(A) Compound '$X$' yields phenylhydrazone $\Rightarrow$ Presence of $C=O$ group.Negative iodoform test $\Rightarrow$ Absence of $CH_3-C=O$ group.Negative Tollens' test $\Rightarrow$ It is a ketone,not an aldehyde.Since the compound is a ketone with $5$ carbon atoms and does not contain a methyl ketone group,it must be $3-$pentanone.$3-$pentanone $(C_5H_{10}O): CH_3CH_2-C(=O)-CH_2CH_3 \xrightarrow{	ext{Reduction}} CH_3CH_2CH_2CH_2CH_3$ ($n-$pentane).

An organic compound '$X$' having molecular formula $C_5H_{10}O$ yields phenylhydrazone and gives negative response to the iodoform test and Tollens' test. It produces $n-$pentane on reduction. '$X$' could be

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