A compound (A) called vanillin is isolated from vanilla seeds. Molecular formula of vanillin is C_(8)H_(8)O_(3). Vanillin gives violet colour on treatment with neutral FeCl_(3) . It also gives silver mirror with Tollens' reagent . Each mole of vanilin of gives one mole of AgI when subject to Zeisel's active methoxy estimation. "Vanillin"overset(conc.HBr)rarr"compound"(B), Compound (B) can alsobe obtaoned from catechol by Gattermann-Koch reaction. Which of the following groups is not present in vanillin ?

A compound (A) called vanillin is isolated from vanilla seeds. Molecul

1.	A compound (A) called vanillin is isolated from vanilla seeds. Molecular formula of vanillin is C_(8)H_(8)O_(3). Vanillin gives violet colour on treatment with neutral FeCl_(3) . It also gives silver mirror with Tollens' reagent . Each mole of vanilin of gives one mole of AgI when subject to Zeisel's active methoxy estimation. "Vanillin"overset(conc.HBr)rarr"compound"(B), Compound (B) can alsobe obtaoned from catechol by Gattermann-Koch reaction. Which of the following groups is not present in vanillin ?
Answer» `-COOH` `-CHO` `OH` `COOH` ANSWER :A