MEDIUM
8th CBSE
IMPORTANT
Earn 100

Arrange petrol, diesel and kerosene in order of increasing boiling range.

Important Questions on Combustion and Fuels

EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q A
Name three gaseous fuels and their sources.
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q A
Why should the ignition temperature of a fuel not be below room temperature?
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q B
Mention three disadvantages of using coal as a fuel.
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q B
What is biogas and how does it burn?
HARD
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q B
Draw a diagram to show the fractional distillation of petroleum.
HARD
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q C
Describe an activity to show that a candle burns to give water vapour, carbon dioxide and soot.
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q C
Describe a candle flame.
MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 7 - Combustion and Fuels>Exercises>Q C
Mention five factors (apart from easy availability at a reasonable price) which should be considered while choosing a fuel.