10-minute Quiz : Chapter 46 Important organic substances

Refer to the structure of aspirin. Which of the following functional groups are present in aspirin?

(1) Carboxyl group

(2) Hydroxyl group

(3) Ester group

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the following are medical applications of aspirin?

(1) It can reduce fever.

(2) It can treat arthritis.

(3) It can treat influenza.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the following substances is the by-product of soap industry?

• A. Glycerol
• B. Caustic soda
• C. Naphthalene
• D. Caustic potash

Which of the following correctly explains the improved cleansing properties of water in washing clothes after the addition of detergents?

• A. Detergents act like a catalyst.
• B. Detergents absorb the dirt.
• C. Detergents form a stable emulsion with water.
• D. Detergents reduce the surface tension of water.

Detergent micelles, as shown in the diagram, form when an oil-water mixture is shaken with a little detergent. Which of following statements concerning detergent micelles is INCORRECT?

• A. They are negatively charged.
• B. They disperse throughout the water.
• C. They can join together to form larger micelles.
• D. They form when the tails of the detergent anions dissolve in the oil and the heads dissolve in the water.

Refer to the following information about polymer X.

• It has six carbon atoms in each molecule of its monomers from which it was made.

• It is polyester.

• It is produced by condensation polymerization.

Which of the options is the partial structure of X?

• A
• B
• C
• D

Which of the following pairs of compounds can react to form a condensation polymer?

• A. H₂N(CH₂)₆NH₂ and CH₃(CH₂)₄COOH
• B. CH₃(CH₂)₄COOH and H₂N(CH₂)₆CH₃
• C. H₂N(CH₂)₆NH₂ and HOOC(CH₂)₄COOH
• D. HOOC(CH₂)₄COOH and H₂N(CH₂)₆CH₃

Nylon is commonly used in textile industry for making fabrics. Which of the following correctly describe the properties of nylon fabrics?

(1) They are strong, tough and elastic.

(2) They are resistant to water.

(3) They are resistant to tear and wear.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the statements concerning poly(ethylene terephthalate) is correct?

• A
• B
• C
• D

Which of the substances are soaps?

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)