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Science CBSE Homework Assignments
Class 8
Combustion and flame
Efficiency of fuel
2.
Calorific value and fuel
Task:
3
m.
1.
Choose the incorrect statement from the following. Forest fires are usually due to
heat of Sun
carelessness of humans
lightning strike
cutting of trees
2.
The calorific value of a fuel is expressed in a unit called
kilojoule per kilogram
kilogram per millilitre
kilojoule per litre
kilojoule per gram
3.
In villages, people use wood as fuel because of
it is environment friendly
it is considered to be an ideal fuel
it catches fire easily
its easy availability and low cost
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