Aldehydes And Ketones Test - 2

Condensation of acetone and chloroform in presence of alkali gives

Which one of the following aldehydes will not form an aldol when treated with dil. NaOH.

Acetaldehyde cannot exhibit

Aldehydes behave as

Compound (A), C₉H₁₀O is inert to Br₂ in CCl₄. Vigorous oxidation with hot alkaline KMnO₄ yields benzoic acid. (A) gives yellow precipitate with 2, 4-dinitro phenyl hydrazine as well as with NaOI. The possible structure of compound (A) would be

An organic liquid has an empirical formula C₄H₈O. The liquid gives a pale yellow precipitate on warming with iodine in alkaline potassium hydroxide solution. The structural formula of the organic liquid could be

A substance C₆H₁₂O does not react with Fehling’s solution but gives positive reactions for a carbonyl group. It also gives positive iodoform reaction. Which of the following structure will best correspond to the above statements?