brodidit for students
Carboxylic acids
Class 12 · Chemistry · 5 questions
Name: ____________________ Date: ____________
Ethanoic acid is the main acid in:
- A Milk
- B Vinegar
- C Lemon juice
- D Tea
Carboxylic acids react with sodium carbonate to release:
- A Ammonia
- B Carbon dioxide
- C Hydrogen
- D Oxygen
Reaction of an acid with an alcohol gives an ester and:
- A Hydrogen
- B Oxygen
- C Carbon dioxide
- D Water
Esters are often responsible for:
- A Fruity smells
- B Colours of metals
- C Bitter taste
- D Salty taste
Soap is made by the alkaline hydrolysis of fats, called:
- A Saponification
- B Hydrogenation
- C Fermentation
- D Esterification
Answer key
1. B, 2. B, 3. D, 4. A, 5. A
Vinegar contains about 5 percent ethanoic acid.
They are acidic enough to release CO2 from carbonates.
Esterification releases water.
Many esters have pleasant fruity odours.
Saponification gives soap and glycerol.