1.

When a hydrocarbon (A) is treated with Br_(2) gives (B). The compound (B) is treated with Na metal in ether gives 2,3- dimethyl butane. The compound (A) is

Answer»

`CH_(3)-CH_(3)`
`CH_(4)`
`CHH_(3)CH_(2)CH_(3)`
`CH_(3)CH(CH_(3))CH_(3)`

SOLUTION :`CH_(3) CH_(2)CH_(2) +Br_(2) overset(AlBr_(3)) to CH_(3) CHClCH_(3)`
`2CH_(3)Br+2Na overset("dry ether") to C_(2)H_(6)+2NaBr`
ETHANE is thehydrocarbon which contain less than foun carbon atoms.


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