Compound (A) ,`C_(8)H_(9)Br` gives a white 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)

Options

A.
B.
C.
D.

Answer

A

Explanation

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.