Aldehydes, Ketones and Carboxylic Acids · Question 79

Compound P(C8H8O) gives a red orange precipitate with 2,4-DNP reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic acid, P gives an aromatic product Q that produces effervescence on treating with aq. NaHCO3. Compounds P and Q, respectively, are :

1. P = [figure] ; Q = [figure]
2. P = [figure] ; Q = [figure]
3. P = [figure] ; Q = [figure]
4. P = [figure] ; Q = [figure]

Consider the following reaction, and choose the correct option. [figure]

1. Compound P is obtained by the hydrogenation of benzoyl chloride with Pd on BaSO4
2. On treating compound P with saturated NaHCO3 solution, brisk effervescence is observed
3. Compound P can be prepared by treating benzene with anhydrous AlCl3 and CH3COCl
4. On treating with bromine water, compound P gives a white precipitate

The compound that CANNOT be obtained from the aldol condensation reaction shown below, is [figure]

1. [figure]
2. [figure]
3. [figure]
4. [figure]

For the following reaction sequence, choose the correct option [figure]

1. Both P and Q are carbonyl compounds
2. If P is the sodium salt of a carboxylic acid, Q is a primary alcohol
3. P and Q are aromatic compounds
4. If P gives a carboxylic acid on acidification, Q gives a poisonous gas on exposure to air and light

Identify the suitable reagent for the following conversion. [figure]

1. (i) NaBH4, (ii) H+/H2O
2. H2/Pd-BaSO4
3. (i) LiAlH4, (ii) H+/H2O
4. (i) AlH(iBu)2, (ii) H2O

The correct order of decreasing acidity of the following aliphatic acids is

1. HCOOH > CH3COOH > (CH3)2CHCOOH > (CH3)3CCOOH
2. HCOOH > (CH3)3CCOOH > (CH3)2CHCOOH > CH3COOH
3. (CH3)3CCOOH > (CH3)2CHCOOH > CH3COOH > HCOOH
4. CH3COOH > (CH3)2CHCOOH > (CH3)3CCOOH > HCOOH

The major product of the following reaction is [figure]

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Match List-I with List-II and choose the correct option.

1. A-II, B-IV, C-I, D-III
2. A-I, B-II, C-III, D-IV
3. A-IV, B-III, C-II, D-I
4. A-II, B-I, C-IV, D-III

Identify the correct reagents that would bring about the following transformation. [figure]

1. (i) H2O/H+, (ii) CrO3
2. (i) BH3, (ii) H2O2/OH , (iii) PCC
3. (i) BH3, (ii) H2O2/OH , (iii) alk. KMnO4
4. (i) H2O/H+, (ii) PCC

Fehling's solution 'A' is

1. aqueous copper sulphate
2. alkaline copper sulphate
3. alkaline solution of sodium potassium tartrate (Rochelle's salt)
4. aqueous sodium citrate