Alkanes And Fuel
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A quiz to assess your understanding.
- 1.Methane is used as a fuel. What property is essential for this use?
- A.
It burns exothermically
- B.
It is odourless.
- C.
It is a gas.
- D.
It has a low boiling point.
- 2.Why are large alkane molecules cracked to form smaller molecules?
- A.
Alkanes with large molecules are not useful.
- B.
Small alkane molecules can be polymerized.
- C.
Crude oil does not contain small alkane molecules.
- D.
To meet the demand for small alkane molecules.
- 3.Which statement about 'fossil fuel' is not true?
- A.
They all contain carbon.
- B.
They are renewable.
- C.
They produce pollutants when burnt.
- D.
They may cause acid rain.
- 4.Which fraction contains the largest molecules?
- A.
Kerosene
- B.
Petrol
- C.
Diesel
- D.
Bitumen
- 5.
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Study the reaction scheme below. What is process I and II?- A.
I is substitution; II is addition
- B.
I is cracking; II is fractional distillation
- C.
I is fractional distillation; II is cracking.
- D.
I is decomposition; II is substitution
- 6.What is the main constituent of natural gas?
- A.
Ethene
- B.
Hydrogen
- C.
Propane
- D.
Methane
- 7.During cracking, a hexane molecule was being split into smaller molecules. Hexane ----> butane + substance XWhat is substance X?
- A.
Ethane
- B.
Ethene
- C.
Ethanol
- D.
Ether
- 8.Which of the following is not made from crude oil?
- A.
Aircraft fuel
- B.
Diesel oil
- C.
Furniture polish
- D.
Margarine
- 9.Which of the following fraction is used as chemical feedstock?
- A.
Lubricating oil
- B.
Bitumen
- C.
Naphtha
- D.
Kerosene
- 10.Fractional distillation is used to separate crude oil into various fractions. Which property of the different fractions enable them to be separated?
- A.
They have different densitites
- B.
They have different boiling points.
- C.
They have different solubilities in crude oil.
- D.
They have different viscosities.
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