Which of the following exhibits tautomerism?

{({C H}_{3})}_{2} N H

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{({C H}_{3})}_{3} C {N O}_{2}

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R_{3} C {N O}_{2}

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R {C H}_{2} {N O}_{2}

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Solution

The correct option is D $R {C H}_{2} {N O}_{2}$

$For tautomerism alpha hydrogen$
$must be present with respect to$
$the functional group.$

Only compound $R - C H_{2} - N O_{2}$ have two alpha hydrogen rest all compounds have zero alpha hydrogen

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