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WorksheetsAIR: Combustion
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Which type of fire extinguisher should be used on a fire involving flammable liquids such as grease or oil?
a)
Water
b)
Carbon Dioxide
c)
Dry Chemical
d)
Foam
2.
Water is not used to control fires involving electrical appliances.
a)
False
b)
True
3.
Wood is a better fuel than LPG.
a)
True
b)
False
4.
Which is not combustible substance
a)
Wood
b)
Cow dung cake
c)
stone
d)
paper
5.
What is produced when combustable substance is in the vapour state and burn strongly in the presence of of air?
a)
heat
b)
light
c)
flame
d)
fumes
6.
Are the molecules in wood the same as ash
a)
yes
b)
depends
c)
does it matter
d)
no
7.
The condition which are required for combustion to take place are:
a)
fuel
b)
ignition temperature
c)
oxygen
d)
all of these
8.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
9.
Which of these isn't in the fire triangle?
a)
Fuel
b)
Heat
c)
Oxygen
d)
Carbon dioxide
10.
The three sides to the fire triangle are;
a)
Petrol, Spark, Oxygen
b)
Heat, Fuel, Oxygen
c)
Heat, Paper, Air
d)
Match, Paper, Air
11.
8.7: Combustion is when a __________ reacts with oxygen
a)
petrol
b)
fuel
c)
fire triangle
d)
carbon dioxide
12.
What is carbon monoxide?
a)
A toxic gas
b)
A large solid
13.
The word equation for combustion is: fuel + oxygen --> water + ________ __________
a)
Carbon dioxide
b)
Limewater
14.
What does incomplete combustion produce that complete combustion doesn't?
a)
Carbon monoxide
b)
Water
15.
Complete combustion is when there is plenty of oxygen to react with.
a)
True
b)
False
16.
Incomplete combustion is when there is a limited amount of oxygen.
a)
True
b)
False
17.
Heating baking soda (sodium bicarbonate) releases...
a)
oxygen
b)
water
c)
hydrocarbons
d)
carbon dioxide
18.
A sign of incomplete combustion is...
a)
Water vapor
b)
Soot or smoke
c)
Carbon dioxide
d)
Oxygen
19.
You put a splint with a dying flame inside a test tube of an unknown gas. The flame immediately goes gets bigger. What gas is probably in the test tube?
a)
Carbon Monoxide
b)
Carbon Dioxide
c)
Oxygen
d)
Water Vapor
20.
Is the combustion reversable
a)
Yes.
b)
No.
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