1.

n-pentane and isopentane can be distinguished byA. `Br_2`B. `O_3`C. Conc. `H_2SO_4`D. `KMnO_4`

Answer» Correct Answer - D
On oxidation, with `KMnO_4` , they give different alcohols
`underset"n-pentane"(CH_3CH_2CH_2CH_2CH_3)underset([O])overset(KMnO_4)to underset(1^@"alcohol")(CH_3CH_2CH_2CH_2CH_2OH)`
`CH_3CH_2-underset(CH_3)underset(|)CH-CH_3underset"[O]"overset(KMnO_4)to underset(3^@"alcohol")(CH_3CH_2-undersetunderset(CH_3)(|)oversetoverset(OH)(|)C-CH_3)`


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