HARD
8th CBSE
IMPORTANT
Earn 100

What do you mean by a fuel? What are the main characteristics of an ideal fuel?

Important Questions on Combustion and Flame

HARD
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Combustion and Flame>EXERCISES>Q 2
With the help of a neat and labelled diagram, discuss the structure of a candle flame.
HARD
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Combustion and Flame>EXERCISES>Q 3
Discuss the harmful effect of burning fuel on our environment.
MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Combustion and Flame>EXERCISES>Q 4
What is global warming? How does it affect the environment?
MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Combustion and Flame>EXERCISES>Q 1
8 Kg of a fuel produces 4,24,000 kJ of heat energy on complete combustion. Calculate the calorific value of the fuel.
MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Combustion and Flame>EXERCISES>Q 2
The calorific value of cow-dung cakes is 6800 kJ/Kg. What amount of fuel will be required to produce 54,400 kJ heat energy?
MEDIUM
8th CBSE
IMPORTANT
Frank Experience Science>Chapter 6 - Combustion and Flame>Higher Order Thinking Skills>Q 1
Why does a washerman use charcoal for ironing clothes? What characteristic of charcoal makes it fit for ironing clothes?