MEDIUM
8th CBSE
IMPORTANT
Earn 100

Explain how, the use of CNG in automobiles has reduced pollution in cities.

Important Questions on Combustion and Flame

HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Short Answer Type Questions>Q 47
What are the disadvantages of burning wood as fuel?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Short Answer Type Questions>Q 48
Give reason for the following: LPG is a better domestic fuel than wood.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Short Answer Type Questions>Q 49
Explain why, when a burning candle is covered with an inverted gas jar, the candle gets extinguished after some time.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Short Answer Type Questions>Q 50
It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Explain.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Long Answer Type Questions>Q 51
What are combustible substances? Name three combustible substances.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Long Answer Type Questions>Q 51
What are non-combustible Substances? Name three non-combustible substances.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Long Answer Type Questions>Q 52
What is meant by 'combustion'? Explain with an example.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Long Answer Type Questions>Q 52
What are the conditions necessary for combustion to take place?