1.

2-Propanol reacts with sulphuric acid at 170^(@)C, gives an alkene which reacts with bromine to give dibromoalkane. Alcoholic potassium hydroxide dehydrogenates the dibromo product to X. The structure of X is :

Answer»

`CH_(2)=CH-CH_(3)` <BR>`CH_(3)-UNDERSET(Br)underset("|")(CH)=CH_(2)Br`
`CH_(3)-C-=CH`
`underset(Br)underset("|")(CH_(2))-C-=CH`

Solution :`CH_(3)underset(OH)underset("|")(CH)CH_(3)underset(170^(@)C)overset(H_(2)SO_(4))rarrCH_(3)CH=CH_(2)overset(Br_(2))rarrCH_(3)underset(Br)underset("| ")(CH)-underset(Br)underset("|")(CH_(2))overset("alc. KOH")rarrunderset((X))(CH_(3)C-=CH)`


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