MEDIUM
8th CBSE
IMPORTANT
Earn 100

Name and give chemical equations to show the products of the combustion reaction in
(a) limited supply of air.
(b) sufficient supply of air.

Important Questions on Combustion and Flame

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D
List the different methods by which a fire can be extinguished.
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D
What kind of fires can effectively be put out by water? What kind of fires is it not suitable for? Give reasons for both cases.
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D
How does carbon dioxide extinguish a fire?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D
What is calorific value of a fuel? Why is hydrogen not used as a fuel though it has the highest calorific value?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D
How are fuels classified on the basis of their physical state? Give two examples of each.
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q D
How is burning of fossil fuels thought to be related to global warming?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q E

Explain, with the help of a labelled diagram, how a soda-acid type fire extinguisher works.

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q E
Name the different zones of a candle flame. Give details of the conditions in each zone.