Match the following pairs in Column-I with th | vedclass

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$(A)$. Acetaldehyde $(CH_3CHO)$ and vinyl alcohol $(CH_2=CH-OH)$ are tautomers,as they exist in dynamic equilibrium involving the migration of an $\al

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$A-2, B-4, C-1, D-5$

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$(A)$. Acetaldehyde $(CH_3CHO)$ and vinyl alcohol $(CH_2=CH-OH)$ are tautomers,as they exist in dynamic equilibrium involving the migration of an $\alpha$-hydrogen atom.$B$. Eclipsed and staggered ethane are different spatial arrangements of the same molecule,known as conformational isomers.$C$. $(+)$$2$-butanol and $(-)$$2$-butanol are non-superimposable mirror images of each other,hence they are enantiomers.$D$. Methyl-$n$-propylamine $(CH_3-NH-CH_2CH_2CH_3)$ and diethylamine $(CH_3CH_2-NH-CH_2CH_3)$ have different alkyl groups attached to the same nitrogen atom,which defines them as metamers.

Column-$I$	Column-$II$
$A$. Acetaldehyde,vinyl alcohol	$1$. Enantiomers
$B$. Eclipsed and staggered ethane	$2$. Tautomers
$C$. $(+)$$2$-butanol,$(-)$$2$-butanol	$3$. Chain isomers
$D$. Methyl-$n$-propylamine and diethylamine	$4$. Conformational isomers
	$5$. Metamers

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