1.

Compound (A), C_(8)H_(9)Br, gives a light yellow precipitate when warmed with alcoholic AgNO_(3). Oxidation of (A) gives an acid (B), C_(8)H_(6)O_(4). (B) easily forms anhydride on heating. Identify the compound (A).

Answer»




Solution :Since compound (A), M.F. `C_(8)H_(9)Br` gives a LIGHT yellow ppt. when warmed with ALCOHOLIC `AgNO_(3)`, therefore, Br must be present in the side chain. Thus, option (b) in which Br is present in the ring is RULED out. Further, since oxidation of (A) gives an acid (B), `C_(8)H_(6)O_(4)` which readily forms an anhydride on heating, therefore, compound (A) must be o-disubstituted. out of the remaining three option (a,c,d) only (a) is o-disubstituted. Thus, option (a) is CORRECT.


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