Write the mechanism of acid catalysed dehydration of ethanol to give ethene.

Write Kolbe’s reaction.

Write the structure of the aldehyde, carboxylic acid and ester that yield 4- methylpent -2-en-1-ol.

How are the following conversions effected
i) benzylchloride to benzylalcohol
ii) benzyalalcohol to benzoic acid

Compound (A) C₆H₁₂O₂ on reduction with LiAlH₄ yields two compounds B and C. The compound (B) on oxidation gave (D) which on treatment with aqueous alkali and subsequent heating furnished E. The latter on catalytic hydrogenation gave (C). Compound (D) on oxidation gave monobasic acid (molecular formula weight = 60). Deduce the structure of (A), (B), (C), (D) and (E).