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- 1. Multiple Choice
A homologous series is a family of organic compounds with
similar chemical properties and same general formula
similar chemical properties and different general formula
different chemical properties and same general formula
similar physical properties and same general formula
- 2. Multiple Choice
Each member of a homologous series differs from the next by a
–CH2 group
–CH group
–CO2 group
–CH4 group
- 3. Multiple Choice
Each member of a homologous series differs from the next by molecular mass of
12
14
16
44
- 4. Multiple Choice
Which of the following can be used to distinguish between alkanes and alkenes?
add a few drops of aqueous bromine
add a few drops of Universal indicator
add a piece of blue litmus paper
add a piece of red litmus paper
- 5. Multiple Choice
Which of the following statement is correct?
Alkenes can turn aqueous bromine from reddish-brown to colourless.
Alkenes can turn aqueous bromine from colourless to reddish-brown.
Alkanes can turn aqueous bromine from reddish-brown to colourless.
Alkanes can turn aqueous bromine from colourless to reddish-brown.
- 6. Multiple Choice
State the general formula for alkane
CnH2n+2
CnH2n
CnH2n+1
CnH2n-2
- 7. Multiple Choice
State the general formula for alkene
CnH2n+2
CnH2n
CnH2n+1
CnH2n-2
- 8. Multiple Choice
Which are the following are all alkanes?
methane, ethane, propane
methane, ethene, propene
methene, ethene, propene
ethene, propene, butene
- 9. Multiple Choice
Which are the following are all alkenes?
methane, ethane, propane
methane, ethene, propene
methene, ethene, propene
ethene, propene, butene
- 10. Multiple Choice
The formula for ethene is
C2H4
C2H6
CH4
C3H6
- 11. Multiple Choice
The formula for propane is
C2H4
C2H6
C3H8
C3H6
- 12. Multiple Choice
Alkanes react with excess oxygen to form
carbon dioxide and water vapour
salt and water
carbon monoxide and soot
metal hydroxide and hydrogen
- 13. Multiple Choice
Both alkanes and alkenes are
hydrocarbons
alcohols
saturated
unsaturated
- 14. Multiple Choice
An alkane is
polyunsaturated
polysaturated
saturated
unsaturated
- 15. Multiple Choice
Which of the following reactions apply to alkenes only
cracking
substitution
addition
combustion
- 16. Multiple Choice
Alkanes undergo substitution by chlorine only in the presence of
UV light
oxygen
water
aqueous bromine
- 17. Multiple Choice
What are the conditions for cracking?
solid catalyst of aluminium oxide and silicon dioxide, at 600oC
nickel catalyst at 200oC
nickel catalyst at 600oC
solid catalyst of aluminium oxide and silicon dioxide, at 200oC
- 18. Multiple Choice
Which of the following statements about cracking is not true?
Cracking is the breakdown of large alkane molecules into small molecules.
Cracking is used to produce fuel for motor vehicles.
Cracking is used to produce H2 and alkenes.
Cracking takes place in the presence of sunlight.
- 19. Multiple Choice
Polyunsaturated means having many
C=C bonds
C-C bonds
C=O bonds
C-O bonds
- 20. Multiple Choice
Which of the following shows the structure of ethene?
- 21. Multiple Choice
Which of the following shows the structure of propene?
- 22. Multiple Choice
Which of the following shows the structure of ethane?
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