Which of the following compounds does not giv | vedclass

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(C) The iodoform test is positive for compounds containing a methyl ketone group $(CH_3-CO-)$ or a methyl carbinol group $(CH_3-CH(OH)-)$. It is also

Vedclass · Accepted Answer

$CHO-CO-Ph$

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(C) The iodoform test is positive for compounds containing a methyl ketone group $(CH_3-CO-)$ or a methyl carbinol group $(CH_3-CH(OH)-)$. It is also positive for compounds that can be oxidized or halogenated to these forms,such as $\alpha$-halo ketones $(XCH_2-CO-)$. $(A)$ $CH_3-CO-CH_2OH$ is a methyl ketone. (Positive) $(B)$ $CH_2I-CH(OH)-CH_2OH$ can be oxidized to $CH_2I-CO-CH_2OH$,which contains the $CH_2I-CO-$ group. (Positive) $(C)$ $CHO-CO-Ph$ (Phenylglyoxal) does not contain a methyl group or a halomethyl group attached to the carbonyl carbon. (Negative) $(D)$ $CH_3-CH(OH)-Ph$ is a methyl carbinol. (Positive) Therefore,$(C)$ does not give the iodoform test.

List-$I$	List-$II$
$A$. Grignard reagent	$1$. $H_2 / Pd-BaSO_4$
$B$. Clemmensen reduction	$2$. $N_2H_4 / KOH / (CH_2OH)_2$
$C$. Rosenmund reduction	$3$. $CH_3MgX$
$D$. Wolff-Kishner reduction	$4$. $Zn-Hg / \text{conc. } HCl$
	$5$. $H_2 / Ni$

Which of the following compounds does not give the iodoform test?

Similar Questions

Match the following lists:
List-$I$ List-$II$
$A$. Grignard reagent $1$. $H_2 / Pd-BaSO_4$
$B$. Clemmensen reduction $2$. $N_2H_4 / KOH / (CH_2OH)_2$
$C$. Rosenmund reduction $3$. $CH_3MgX$
$D$. Wolff-Kishner reduction $4$. $Zn-Hg / \text{conc. } HCl$
$5$. $H_2 / Ni$

$A$ compound,containing only carbon,hydrogen,and oxygen,has a molecular weight of $44$. On complete oxidation,it is converted into a compound of molecular weight $60$. The original compound is:

For the reaction,the product expected is:

Which of the following compounds can undergo both Cannizzaro reaction and Aldol condensation?

Which one of the following compounds will give an orange precipitate when treated with $2,4-$dinitrophenylhydrazine?

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