Compare LPG and wood as fuels.

Important Questions on Combustion and Flame

EASY

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 5

Give reason, why water is not used to control fires involving electrical equipment?

EASY

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 5

Give reason, LPG is a better domestic fuel than wood.

MEDIUM

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 5

Give reason, paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

MEDIUM

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 6

Make a labelled diagram of a candle flame and name different zones of a flame.

EASY

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 7

Name the unit in which the calorific value of a fuel is expressed.

EASY

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 8

Explain how $\mathrm{C}{\mathrm{O}}_2$ is able to control fires?

EASY

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 9

It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Explain. 

MEDIUM

8th Jammu and Kashmir Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 10

Which zone of a flame does a goldsmith use for melting gold and silver and why?