Alkanes And Alkenes

10 Questions

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Alkanes And Alkenes

Test your understanding of alkanes and alkenes after the lesson package.


Questions and Answers
  • 1. 
    Which one of these equations does not represent an addition reaction?
    • A. 

      CH2Cl2+Cl2-->CHCl3+HCl

    • B. 

      C2H4+Br2-->C2H4B2

    • C. 

      NC2H4-->-[CH2-CH2]-n

    • D. 

      C3H6+H2O-->C3H7OH

  • 2. 
    When octane, an alkane present in petrol, is completely burnt, what are the products?
    • A. 

      Carbon dioxide

    • B. 

      Carbon monoxide

    • C. 

      Hydrogen

    • D. 

      Water

    • E. 

      Carbon

  • 3. 
    Balance the equation: _CH4 + _O2 --> _CO2 + _H2O enter your answer like this: x,x,x,x
  • 4. 
    • A. 

      CH4(g)+2O2(g)-->CO2(g)+2H2O

    • B. 

      C3H8(g)+5O2(g)-->3CO2(g)+4H2O(g)

    • C. 

      C2H4(g)+3O2(g)-->2CO2(g)+2H2O(g)

    • D. 

      2C2H6(g)+7O2(g)-->4CO2(g)+6H2O(g)

  • 5. 
    Which one of the following can differentiate ethane from ethene?
    • A. 

      A lighted splint

    • B. 

      Aqueous bromine

    • C. 

      Limewater

    • D. 

      Litmus solution

  • 6. 
    Methane is used as a fuel. What property is essential for this use?
    • A. 

      It burns exothermically

    • B. 

      It is a gas

    • C. 

      It is odourless

    • D. 

      It has a low boiling point

  • 7. 
    What method can be used to obtain ethene from alkanes?
    • A. 

      Distillation

    • B. 

      Polymerisation

    • C. 

      Dehydrogenation

    • D. 

      Cracking

  • 8. 
    Octane is an alkane found in petrol. Which statement is true about octane?
    • A. 

      It can be polymerised

    • B. 

      It decolourises aqueous bromine

    • C. 

      It has a lower boiling point than methane

    • D. 

      It reacts with chlorine by substitution

  • 9. 
    Dichloromethane can be made by reacting methane with chlorine. Another substance is produced in the process. What is this substance?
  • 10. 
    Which of the following is an alkane?
    • A. 

      C3H7COOH

    • B. 

      C3H5OH

    • C. 

      CH4

    • D. 

      C2H2

    • E. 

      C60H122

    • F. 

      C50H98