The polymer is obtained when HCHO is allowed to stand. It is a white solid. The polymer is:

(1) trioxane

(2) formose

(3) para-formaldehyde

(4) metaldehyde

The important step in Cannizzaro's reaction is the intermolecular shift of:

(1) proton

(2) H-atom

(3) hydride ion

(4) hydronium ion

Pinacole is:

1. 2,3-dimethyl-2,3-butandiol

2. 3,3-dimethyl-2-propanone

3. 3-methylbutan-2-ol

4. None of the above

Which reaction is used for detecting the presence of carbonyl group?

1. Reaction with hydrazine

2. Reaction with phenylhydrazine

3. Reaction with hydroxylamine

4. All of the above

Acetone is used in:

1. face creams

2. vanilla

3. nail polishes

4. sweet-smelling erasers

Benedict's solution provides:

(1) Ag⁺

(2) Cu²⁺

(3) Ba²⁺

(4) Li⁺

Jones reagent is:

1. Acidified KMnO₄

2. K₂Cr₂O₇ + H₂SO₄ or chromic acid + H₂SO₄

3. Alkaline K₂Cr₂O₇

4. None of the above

Acetaldehyde undergoes self condensation in presence of aluminium ethoxide to give ethyl acetate. This reaction is called:

(1) Perkin reaction

(2) Tischenko's reaction

(3) Cannizzaro's reaction

(4) Aldol condensation

Oppenauer oxidation is the reverse process of:

(1) Wolff-Kishner's reduction

(2) Rosenmund's reduction

(3) Clemmensen's reduction

(4) Meerwein-Ponndorf Verley reduction

Semicarbazide is:

(1) NH₂CONH₂

(2) NH₂-NH₂

(3) NH₂CONHNH₂

(4) None of these