HARD
8th CBSE
IMPORTANT
Earn 100

How does the burning of wood as a fuel, harmful to us?

Important Questions on Combustion and Flame

HARD
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 5
Why is carbon dioxide considered the best fire extinguisher to put off fires caused by burning of inflammable liquids like petrol or oil?
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 1
A good fuel has high calorific value.
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 2
Water is not used to control fires involving electrical appliances.
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 3
Wood is a better fuel than LPG.
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 4
A good fuel burns neither too fast nor too slowly.
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 5
The ignition temperature is the temperature below which a substance does not burn even in the presence of supporter of combustion.
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 1
A good fuel should have
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 5 - Combustion and Flame>EXERCISES>Q 2
Which of the following fuel has the highest calorific value?