HARD
10th CBSE
IMPORTANT
Earn 100

What is meant by energy crisis? Why are we facing energy crisis in the world of today? Suggest steps to prevent energy crisis.

Important Questions on Sources of Energy

MEDIUM
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>EXERCISES>Q 5
Seleena covered the box type solar cooker made by her with a black plastic sheet. How does it affect the efficiency of the device? If efficiency is less, give reasons.
HARD
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>EXERCISES>Q 5
Nowadays, coal used in thermal power plants is being replaced by CNG. Do you think CNG is a sustainable and clean fuel? Give reasons.
HARD
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>EXERCISES>Q 5
What are solar concentrators? Can they be used to generate electricity without using solar cell? Explain.
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>MOCK TEST QUESTION PAPER>Q 1
Why is CNG considered as eco-friendly fuel?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>MOCK TEST QUESTION PAPER>Q 2
List two advantages of solar cell.
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>MOCK TEST QUESTION PAPER>Q 3
What are the uses to which wind energy can be put?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>MOCK TEST QUESTION PAPER>Q 4
List two uses of biogas.
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 5 - Sources of Energy>MOCK TEST QUESTION PAPER>Q 5
Why is coal called fossil fuel?