Which of the following will give a yellow pre | vedclass

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(A) The iodoform test is given by compounds containing the $CH_3CO-$ group (methyl ketones) or the $CH_3CH(OH)-$ group (secondary alcohols with a meth

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$Propan-2-ol$

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(A) The iodoform test is given by compounds containing the $CH_3CO-$ group (methyl ketones) or the $CH_3CH(OH)-$ group (secondary alcohols with a methyl group). $Propan-2-ol$ $(CH_3CH(OH)CH_3)$ contains the $CH_3CH(OH)-$ group,which is oxidized to acetone $(CH_3COCH_3)$ by iodine and alkali,subsequently giving a yellow precipitate of iodoform $(CHI_3)$. Benzophenone $(C_6H_5COC_6H_5)$ lacks the methyl group attached to the carbonyl carbon. Methyl acetate and acetamide do not give the iodoform test under standard conditions.

$I. HNO_3$	$II. NH_2NH_2 / OH^-$
$III. 2[Ag(NH_3)_2]^+$	$IV. NaOH$

Which of the following will give a yellow precipitate $(ppt.)$ with iodine and alkali?

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