Class 7 Water A Precious Resource CBSE Questions & Answers

Class 7 · Water A Precious Resource

This is Science Class 7 Water A Precious Resource CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Plants loose water in form of
  • A
    Snow
  • B
    Gases
  • C
    Liquid
  • D
    Water vapour
    Correct
2
Which one is not a natural source of water
  • A
    Pond
  • B
    River
  • C
    Canal
    Correct
  • D
    Lake
3
Loss of water by plants is called
  • A
    Transportation
  • B
    Transpiration
    Correct
  • C
    Evaporation
  • D
    Condensation
4
The purest form of water is
  • A
    Hand pump water
  • B
    Subsoil water
  • C
    Spring water
  • D
    Rain water
    Correct
5
In water works, first step is
  • A
    Chlorination
  • B
    Filtration
  • C
    Sedimentation
    Correct
  • D
    Aeration
6
In which season water scarcity is most acute?
  • A
    Rainy season
  • B
    Winter season
  • C
    Autumn season
  • D
    Summer season
    Correct
7
Plants absorbs water from
  • A
    All of these
  • B
    Surface water
  • C
    Water present between the soil particles
    Correct
  • D
    Ground water
8
An example of underground water is
  • A
    River
  • B
    Well
    Correct
  • C
    Lake
  • D
    Sea
9
River Yamuna is polluted near Delhi due to
  • A
    Thermal plant on its bank
  • B
    Rivers joining it
  • C
    Addition of untreated sewage
    Correct
  • D
    Water animals
10
Which source of water is mostly used by construction site of building?
  • A
    Ground water
    Correct
  • B
    Supply water
  • C
    Ponds water
  • D
    River water
11
Water is natural resource which is
  • A
    All of above
  • B
    Inexhaustible
    Correct
  • C
    Exhaustible as well as inexhaustible
  • D
    Exhaustible
12
Addition of harmful substance in water leads to
  • A
    Microbial growth
  • B
    Algal bloom
  • C
    High oxygen demand
  • D
    Water pollution
    Correct
13
Of the total amount of water present on the earth, the water available for human use is about
  • A
    2%
  • B
    10%
  • C
    20%
  • D
    1%
    Correct
14
People living near sea or ocean also feels lacks of water because
  • A
    Sea water is salty
    Correct
  • B
    All of these
  • C
    Sea water is banned by government
  • D
    Sea water is not reachable
15
About 70% of our body consists of
  • A
    Muscles
  • B
    Minerals
  • C
    Bone
  • D
    Water
    Correct