Alkanes And Fuel

10 Questions

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Alkanes And Fuel

A quiz to assess your understanding.


Questions and Answers
  • 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. 
    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.