MEDIUM
7th CBSE
IMPORTANT
Earn 100

Why do we need to conserve water? Explain.

Important Questions on Water–A Life Giving Liquid

EASY
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 1
The water cycle is also called as _____.
EASY
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 1
Water in _____ is used for generating electricity.
EASY
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 1
The boiling point of water is _____.
EASY
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 1
The change of water vapours on cooling to water drops is called _____
MEDIUM
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 2
a. Purest form of water i Can be removed by boiling 
b Water Table ii Collection of water on surface of Earth
c Temporary hardness iii Is present on top layer of an aquifer
d Permanent hardness iv Rain water
e. Surface water v Chlorides of calcium and magnesium
EASY
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 3
A balance between the availability and the demand for water causes scarcity of water.
EASY
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 3
Scarcity of water is experienced because of global warming.
EASY
7th CBSE
IMPORTANT
Expanded Universal Science 7>Chapter 17 - Water–A Life Giving Liquid>TRACK YOUR PROGRESS>Q 3
Farmers should use chemical fertilisers to prevent the contamination of groundwater.