EASY
8th CBSE
IMPORTANT
Earn 100

Define ignition temperature

Important Questions on Combustion and Flame

MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 4
Define Calorific value.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 5
Give a reason for the following; You should not light a matchstick near a petrol pump.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 5
Give a reason for the following; Water should not be used in case of fire in a petrol tank or an electric fire.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 5

Give a reason for the following;

Goldsmiths blow the outer zone of the flame with a metallic blowpipe for melting gold.

MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 5

Give a reason for the following;

A washerman uses charcoal for ironing clothes.

MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 5

Give a reason for the following;

LPG is a better fuel than wood.

MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 6
What are the characteristics of an ideal fuel?
MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 6 - Combustion and Flame>Put on your thinking cap>Q 6
Why do substances produce flames in different colours?