Lakhmir Singh Class 10 Physics Solutions Chapter 3 - Sources of Energy

Lakhmir Singh Class 10 Solutions Lakhmir Singh Class 10 Physics Solutions 3. Sources of Energy

Lakhmir Singh Class 10 Physics Solutions Chapter 3 - Sources of Energy

Very Short Answer Type Questions-Pg-121

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Class 10th|Lakhmir Singh & Manjit Kaur - PhysicsChapter 3 - Sources of Energy

Q. 1

Name a non-renewable source of energy other than fossil fuels.

Q. 2

Define calorific value of a fuel.

Q. 3

“The calorific value of cooking gas (LPG) is 50 kj/g”. What does it mean?

Q. 4

Which of the following produces more heat (per unit mass) on burning? Coal or LPG

Q. 5

Define ignition temperature of a fuel.

Q. 6

“The ignition temperature of a fuel is 800 C”. What does this mean?

Q. 7

Fill in the following blank with a suitable word:

The amount of heat produced by burning a unit mass of a fuel completely is known as its---value.

Lakhmir Singh & Manjit Kaur - PhysicsClass 10th , Lakhmir Singh & Manjit Kaur

Chapter 1 - Electricity

Chapter 2 - Magnetic Effects of Electric Current

Chapter 3 - Sources of Energy

Chapter 4 - Reflection of light

Chapter 5 - Refraction of Light

Chapter 6 - The Human Eye and The Colourful World

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