Aldehydes, Ketones and Carboxylic Acids

The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of

1. Acid anhydride > Amide > Ester > Acyl chloride
2. Acyl chloride > Ester > Acid anhydride > Amide
3. Acyl chloride > Acid anhydride > Ester > Amide
4. Ester > Acyl chloride > Amide > Acid anhydride.

Acetophenone when reacted with a base, C2H5ONa, yields a stable compound which has the structure

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

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called

1. Cope reduction
2. Dow reduction
3. Wolff-Kishner reduction
4. Clemmensen reduction

The product formed in Aldol condensation is

1. a beta-hydroxy aldehyde or a beta-hydroxy ketone
2. an alpha-hydroxy aldehyde or ketone
3. an alpha, beta unsaturated ester
4. a beta-hydroxy acid.

Which one of the following on treatment with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid?

1. C6H5CHO
2. CH3CH2CH2CHO
3. CH3- O \|C-CH3
4. C6H5CH2CHO

Which of the following represents the correct order of the acidity in the given compounds ?

1. FCH2COOH > CH3COOH > BrCH2COOH > ClCH2COOH
2. BrCH2COOH > ClCH2COOH > FCH2COOH > CH3COOH
3. FCH2COOH > ClCH2COOH > BrCH2COOH > CH3COOH
4. CH3COOH > BrCH2COOH > ClCH2COOH > FCH2COOH

A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is

1. formaldehyde
2. acetaldehyde
3. acetone
4. diethyl ketone

Nucleophilic addition reaction will be most favoured in

1. CH3CHO
2. CH3-CH2-CH2- O \|C-CH3
3. (CH3)2C=O
4. CH3CH2CHO

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields

1. ethyl propionate
2. ethyl butyrate
3. acetoacetic ester
4. methyl acetoacetate

In a set of reactions acetic acid yielded a product D. CH3COOH SOCl2 A [anhy. AlCl3]benzene B HCN C HOH D The structure of D would be

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

When m-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is (are)

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

A and B in the following reactions are : [figure]

1. [figure]
2. [figure]
3. A = RR'CHCN, B = NaOH
4. [figure]

[figure] In the above reaction product P is

1. [figure]
2. [figure]
3. [figure]
4. C6H5- O \|C-C6H5

In the following reaction product P is R- O \|C-Cl [Pd-BaSO4]H2 P

1. RCH2OH
2. RCOOH
3. RCHO
4. RCH3

[figure] Product 'P' in the above reaction is

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

First product of the reaction between RCHO and NH2NH2 is

1. RCH=NNH2
2. RCH=NH
3. RCH2NH2
4. RCON3

Benzoic acid may be converted into ethyl benzoate by reaction with :

1. ethyl alcohol
2. ethyl alcohol and dry HCl
3. ethyl chloride
4. sodium ethoxide.

Reduction by LiAlH4 of hydrolysed product of an ester gives

1. two alcohols
2. two aldehydes
3. one acid and one alcohol
4. two acids.