MEDIUM
8th CBSE
IMPORTANT
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A candle consists of unburnt wax vapours. Which zone is this?

Important Questions on Combustion and Flame

EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Check Point>Q 1
Fuels can be in solid or liquid state only. Is it correct?
EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Check Point>Q 2
Write the unit of calorific value.
EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Check Point>Q 3

Burning of wood is harmful for human beings. How?

EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Chapter Practice>Q 1

A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance?

EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Chapter Practice>Q 2
Which one of the following has highest calorific value?
EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Chapter Practice>Q 3

Magnesium ribbon on burning in air produces

EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Chapter Practice>Q 4

Which of the following is not a combustible substance?

EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 6 - Combustion and Flame>Chapter Practice>Q 5

The substance that does not burn with flame is