1) $A\xrightarrow[{dil.H_{2}SO_{4}}]{K_{2}Cr_{2}O_{7}}$ $B\xrightarrow[{H_{2}O}]{CH_{2}Mgl}$ the reactant A is? A) $CH_{3}CHOHCH_{3}$ B) $CH_{3}COCH_{3}$ C) $C_{2}H_{5}OH$ D) $ CH_{3}COOH$ Answer: Option AExplanation:$CH_{3}CHOHCH_{3}\xrightarrow[{dil.H_{2}SO_{4}}]{K_{2}Cr_{2}O_{7}}CH_{3}COCH_{3}$ $CH_{3}COCH_{3}\xrightarrow[{H_{2}O}]{CH_{2}Mgl}$