Test Yourself : Chapter 20 Hydrocarbons from fossil fuels

Which of the following statements concerning petroleum and natural gas are correct?

(1) They both consist mainly of hydrocarbons.

(2) They are non-renewable energy sources.

(3) They formed from the remains of ancient marine organisms.

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

Which of the following statements concerning fractional distillation of petroleum in industry are correct?

(1) Refinery gas is collected at the top of the fractionating tower.

(2) Bitumen is collected at the bottom of the fractionating tower.

(3) It is a chemical process as new substances are produced during the separation.

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

Which of the following statements concerning some petroleum fractions is INCORRECT?

• A. Refinery gas burns with a cleaner flame than lubricating oil.
• B. Petrol is less flammable than fuel oil.
• C. Kerosene is more volatile than bitumen.
• D. Naphtha is less viscous than fuel oil.

Which of the following petroleum fractions is used as a fuel for aeroplanes?

• A. Fuel oil
• B. Diesel oil
• C. Kerosene
• D. Refinery gas

Which of the following substances could form when hexane (C₆H₁₄) is burnt incompletely in the air?

(1) Butane (C₄H₁₀)

(2) Carbon dioxide

(3) Carbon

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

Which of the following air pollutants are usually produced in the combustion of petrol in a car engine?

(1) Carbon monoxide

(2) Nitrogen oxides

(3) Unburnt hydrocarbons

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

Which of the following measures can reduce the emission of sulphur dioxide?

(1) Using fuels of low sulphur content in power plants

(2) Installing scrubbers in motor vehicles

(3) Replacing diesel oil with liquefied petroleum gas as a fuel for motor vehicles

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

Which of the following measures can slow down global warming?

(1) Developing renewable energy sources

(2) Stopping deforestation

(3) Increasing dependence on fossil fuels

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