EASY
8th CBSE
IMPORTANT
Earn 100

The ignition temperature / kindling temperature is the lowest temperature

39.66% studentsanswered this correctly

Important Questions on Combustion and Flame

EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q I
Any substance which is easily available and burns in air at a moderate rate, producing large amount of heat energy, without leaving behind undesirable residue, is called :
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q II
A good fuel should have _____ ignition temperature.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q II
LPG is an_____fuel.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q II
During incomplete combustion of a fuel _____ gas is formed.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q II
A region of burning gases is called _____.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q II
The hottest region of a candle flame is called _____ zone. (luminous/non-luminous)
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q III
Oxygen is a combustible gas.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q III
A substance burns in air, when its temperature is below the ignition temperature.