Narendra Kumar Solutions for Chapter: Sources of Energy, Exercise 3: HIGHER ORDER THINKING SKILLS (HOTS)

Author:Narendra Kumar

Narendra Kumar Physics Solutions for Exercise - Narendra Kumar Solutions for Chapter: Sources of Energy, Exercise 3: HIGHER ORDER THINKING SKILLS (HOTS)

Attempt the free practice questions on Chapter 3: Sources of Energy, Exercise 3: HIGHER ORDER THINKING SKILLS (HOTS) with hints and solutions to strengthen your understanding. Science Part-I NEW ERA PHYSICS Textbook for Class X solutions are prepared by Experienced Embibe Experts.

Questions from Narendra Kumar Solutions for Chapter: Sources of Energy, Exercise 3: HIGHER ORDER THINKING SKILLS (HOTS) with Hints & Solutions

MEDIUM
10th CBSE
IMPORTANT

Can any source of energy be pollution-free? Why or why not?

MEDIUM
10th CBSE
IMPORTANT

Why is bio-gas a better fuel than animal dung-cakes?

MEDIUM
10th CBSE
IMPORTANT

On what principle does a solar heating device operate? The solar constant at a place is 1.4 kW m-2. How much solar energy will be received at this place per second over an area of 10 m2?

MEDIUM
10th CBSE
IMPORTANT

Give reasons to explain why is it not possible to use solar cells to meet all our energy needs.

MEDIUM
10th CBSE
IMPORTANT

A substance is added to LPG cylinders while filling to make the detection of leakage of LPG from the cylinders easy. 
Name this substance.

MEDIUM
10th CBSE
IMPORTANT

A substance is added to LPG cylinders while filling to make the detection of leakage of LPG from the cylinders easy.
How does this substance make the detection of leakage of LPG from the cylinders easy? 

MEDIUM
10th CBSE
IMPORTANT

A student constructed a box-type solar cooker. He found that it does not work efficiently. What could this be due to? Give any four possible mistakes in the construction and operation of the cooker. What maximum temperature can ordinarily be reached inside a solar cooker?