Write the full form of CNG.

Important Questions on Combustion and Flame

MEDIUM

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 2

When crackers burst, which type of sound is produced?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 3

What is the temperature of a candle flame?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 4

Which type of flame is obtained by the complete combustion of fuel?

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 1

Which conditions are necessary for combustion?

HARD

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 2

How many types of combustion are there? Write a note on each of them.

EASY

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 3

What is ignition temperature? Can a substance catch fire below its ignition temperature?

HARD

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 4

What precautions should be taken to prevent incomplete combustion of fuel?

HARD

8th CBSE

IMPORTANT

SCIENCE Class 8>Chapter 6 - Combustion and Flame>LET's Learn And Evaluate>Q 5

What are the characteristics of a good fuel?