MEDIUM
8th CBSE
IMPORTANT
Earn 100

Which of the following are combustible materials? 
(a) coal
(b) salt
(c) lime
(d) alcohol
(e) cooking gas.

Important Questions on Combustion, Fuels and Flame

EASY
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 4
What do you understand by combustible and non-combustible substances? Explain giving suitable examples.
HARD
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 5
Describe the types of combustion giving suitable examples.
EASY
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 6
Why should we not store spirit or petrol near our living places?
MEDIUM
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 1
What are the necessary conditions for combustion?
MEDIUM
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 2
Why do we advise house ladies not to wear nylon or synthetic sarees or clothes in the kitchen while using gas burners for cooking?
HARD
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 3

Show experimentally that:
Fuel is necessary for making fire.

HARD
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 3

Show experimentally that: 

air is necessary for making fire.

HARD
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>Test Your Learning Outcome>Q 3

Show experimentally that:
Ignition is necessary for making fire.