Aldehydes, Ketones and Carboxylic Acids

Which of the following compounds reacts with sodium hydrogen carbonate (NaHCO3) to evolve carbon dioxide gas?

1. Ethanol
2. Phenol
3. Ethanoic acid
4. Acetone

When sodium ethanoate is heated with soda lime, the product formed is:

1. Ethene
2. Methane
3. Ethanol
4. Ethanal

The Hell-Volhard-Zelinsky (HVZ) reaction is used for:

1. Bromination at the alpha-carbon of carboxylic acids
2. Oxidation of aldehydes
3. Reduction of ketones
4. Esterification of alcohols

Which of the following compounds is most reactive towards nucleophilic addition?

1. Benzaldehyde
2. Propanone
3. Ethanal
4. Benzophenone

Which reagent converts aldehydes and ketones into cyanohydrins?

1. HCN
2. NaOH
3. H2SO4
4. Zn/Hg

The reaction between ethanoic acid and ethanol in the presence of concentrated sulfuric acid produces:

1. Acetaldehyde
2. Ethyl ethanoate
3. Diethyl ether
4. Ethene

Which of the following compounds is the strongest acid?

1. Ethanol
2. Phenol
3. Ethanoic acid
4. Water

The haloform reaction is given by compounds containing the group:

1. -CHO
2. -COOH
3. -COCH3
4. -OH

Which of the following compounds undergoes aldol condensation?

1. Benzaldehyde
2. Formaldehyde
3. Ethanal
4. Benzophenone

Which reaction is characteristic of compounds containing the carbonyl group?

1. Electrophilic substitution
2. Nucleophilic addition
3. Free radical substitution
4. Elimination

Which of the following compounds gives a positive Fehling's test?

1. Benzaldehyde
2. Acetophenone
3. Ethanal
4. Benzophenone

The major product formed when ethanal undergoes reduction with hydrogen in the presence of nickel catalyst is:

1. Ethanoic acid
2. Ethene
3. Ethanol
4. Methanol

Which of the following compounds undergoes the Cannizzaro reaction?

1. Ethanal
2. Propanal
3. Benzaldehyde
4. Acetaldehyde

Which of the following compounds gives a positive Tollens' test?

1. Propanone
2. Benzophenone
3. Ethanal
4. Acetone