An organic compound " P " of molecular formula C _ 6 H _ 12 O _ 3 gives positive Iodoform test but negative Tollen's test. When " P " is treated with dilute acid, it produces " Q ". " Q " gives positive Tollen's test and also iodoform test. The structure of " P " is :
A.
P gives positive iodoform (has CH_3CO-) but negative Tollen's (no -CHO). Q (after acid hydrolysis) gives both tests, meaning Q has both CH_3CO- and -CHO. This indicates P has an acetal protecting an aldehyde group. Option (1): CH_3-CO-CH_2-CH(OCH_3)_2 Has CH_3CO- → positive iodoform Has acetal -CH(OCH_3)_2, no free aldehyde → negative Tollen's Hydrolysis: -CH(OCH_3)_2 H^+/H_2O -CHO Q = CH_3-CO-CH_2-CHO gives both iodoform and Tollen's test Molecular formula: C_6H_ 12 O_3
Related: Chemistry — Aldehydes and Ketones · All PYQ Banks