WorksheetsCombustion and F
Total questions: 15
Worksheet time: 9mins
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.
What are the contents of fire extinguishers with a black label.
a)
Water
b)
Foam
c)
Carbon dioxide (CO2)
d)
Powder
3.
Which of these isn't in the fire triangle?
a)
Fuel
b)
Heat
c)
Oxygen
d)
Carbon dioxide
4.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
5.
A good fuel has high calorific value.
a)
True
b)
False
6.
Water is not used to control fires involving electrical appliances.
a)
False
b)
True
7.
Wood is a better fuel than LPG.
a)
True
b)
False
8.
A good fuel burns neither too fast nor too slowly.
a)
True
b)
False
9.
The ignition temperature is the temperature below which a substance does notburn even in the presence of supporter of combustion.
a)
True
b)
False
10.
The solid fuel used for cooking in rural areas is
a)
Cow dung cake
b)
Wood
c)
All of these
11.
A good fuel should have
a)
low ignition temperature.
b)
low cost and easy availability.
c)
high calorific value.
d)
all of them.
12.
Which of the following fuel has highest calorific value?
a)
Wood
b)
coal
c)
Hydrogen
d)
petrol
13.
In carbon dioxide based fire extinguishers, carbon dioxide is present in
a)
liquefied and compressed form.
b)
powdered potassium bicarbonate form.
c)
powdered sodium bicarbonate form.
d)
all of them.
14.
Calorific value of Kerosene
a)
46
b)
47
c)
48
d)
49
15.
Which is not combustible substance
a)
Wood
b)
Cow dung cake
c)
stone
d)
paper
100 %
