1.

A hydrocation (A) (C_(8) H_(10)) (E) is a stream volatile compound and on nitrationgives two mononitro derivatives. (A) gives the followingreactions. Degree fo unsaturation (DU) in (H) is:

Answer»

`7`
`8`
`9`
`10`

Solution :`D.U`. in`(A) = ((2n_(C) + 2) - n_(H))/(2)=((8xx2+2)-10)/(2)= 4^(@)`
`4 D.U`. and `C:H = 1:1` suggst that `(A)` contains benzene ring with two extra `C` atom [i.e., two `(Me)` groups]. Since COMPOUND`(A)` is steam volatie and on nitration gives two nitro-derivaties, so `(A)` is ortho-xylene.

`D.U` in `H` = Two benzene ring `+` cycloburtane ring `= (2xx4+1) = 9`


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