(A) and (B) are isomer Identify (B).

a. Identify B

I) (A) and (B) are diastereomers II) (B) and (D) are enantiomers III) (A) and (D) are geometric isomer IV) (A) and ( C ) are optical isomer

Compound (A) and (B) are isomers having C_(8)H_(10) . On oxidation (A) gives benzoic acid while (B) gives phthalic acid which forms an anhydride (C) on heating. Identify (A), (B) and (C).

, (A) & (B) are isomers , Isomer (B) is :

, (A) & (B) are isomers. Product (B) is : Dewar's Benzene

Ph-underset((A))underset(OH)underset(|)(CH)-overset(O)overset(||)(C)-O-H , (A) and (B) are isomer and isomerization effectively carried out by trace of base (B). Identify (B).

Identify : (a) (b)