Gasoline (petrol)
3 marks · EasyName two typical uses of refinery gases.
State the main chemical in refinery gases used for domestic heating.
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(a) Domestic heating; cooking · must show heating, cooking
(b) Propane (or butane acceptable) · must show propane or butane
Common mistakes: giving uses of other fractions (e.g. gasoline, kerosene); incorrectly naming butane as the only gas
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Marking points
B1 (a) · 1 mark · One correct typical use of refinery gases (e.g., heating, cooking)
B2 (a) · 1 mark · A second correct typical use of refinery gases (must be different from first, e.g., heating if not already given, or cooking, or use as LPG in appliances)
B3 (b) · 1 mark · Correctly names propane or butane as the main chemical in LPG for domestic heating
Worked solution
a) Two typical uses of refinery gases are:
- Domestic heating
- Cooking
b) The main chemical in refinery gas used for heating is propane (but butane is also correct).