1.

Among the following the pair that is not a pair of metamers is

Answer»

`CH_(3)OCH_(2)CH_(2)CH_(3) " & " CH_(3)CH_(2)OCH_(2)CH_(3)`
`CH_(2)OCH_(2)CH_(2)CH_(3) " & "CH_(3)OCH(CH_(3))_(2)`
`CH_(3)NHCH_(2)CH_(2)CH_(3) " & " CH_(3)CH_(2)NHCH_(2)CH_(3)`
`CH_(3)COCH_(2)CH_(2)CH_(3) " & "CH_(3)CH_(2)COCH_(2)CH_(3)`

ANSWER :B


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