Give an example of spontaneous combustion.

Important Questions on Combustion and Flame

EASY

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Answer Orally>Q 3

What are the conditions required for combustion?

HARD

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Answer Orally>Q 1

What factors determine the colour of the flame?

MEDIUM

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Answer Orally>Q 2

Which is the least hot region of the candle flame?

MEDIUM

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Answer Orally>Q 3

In which zone of candle flame does complete combustion take place?

HARD

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Answer Orally>Q 1

How are fuels classified on the basis of physical state?

EASY

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Answer Orally>Q 2

Name two gaseous fuels.

MEDIUM

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Mind Scrambler>Q a

Unscramble the following to form a word or term.

FEMANLIBALM

EASY

8th CBSE

IMPORTANT

Start Up Science>Chapter 5 - Combustion and Flame>Answer Orally>Q 1

What is calorific value of a fuel?