Name the four zones in a wax candle flame.

Important Questions on Combustion, Fuels and Flame

EASY

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q 2

Give one word for the following:
A material which gets ignited (catches fire).

MEDIUM

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q 2

Define the term:
Ignition temperature.

EASY

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III

Oxygen is essential for combustion.

EASY

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III

The minimum temperature at which a substance catches fire is its calorific value.

EASY

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III

Fire extinguishers should be provided in all public places. 

MEDIUM

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III

Amount of heat energy produced on complete combustion of a unit fuel is called its calorific value.

EASY

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q 5

Mined coal and petroleum are _____ fuels.

MEDIUM

8th CBSE

IMPORTANT

SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q 6

What are the requisites of combustion?