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
Which one is the most common cause of contamination of water in rural area?
  • A
    Presence of aquatic organisms
  • B
    Addition of manure in field near water bodies
  • C
    Soil present around the water bodies
  • D
    Defection in or around water bodies
    Correct
2
which of the folloeing inhibits the seepage of rainwater into ground?
  • A
    A pukka floor
    Correct
  • B
    playground
  • C
    Forest land
  • D
    Grass lawn
3
The purest form of water is
  • A
    Hand pump water
  • B
    Spring water
  • C
    Rain water
    Correct
  • D
    Subsoil water
4
Excessive rain : flood :: less or no rain : ?
  • A
    Drought
    Correct
  • B
    Soil erosion
  • C
    Water table
  • D
    Soil pollution
5
The three forms of water present in universe are
  • A
    Present in atmosphere
  • B
    Interchangeable
    Correct
  • C
    Remain in fixed state
  • D
    Can not be interchanged
6
Select the incorrect statement.
  • A
    Water exists only in three states
  • B
    Water evaporates only if heated
    Correct
  • C
    Water evaporates all the time
  • D
    Water vapour condense if cooled
7
A mass of water droplets, ice particles, dust particles floating in air up above forms the
  • A
    Water vapour
  • B
    Ice
  • C
    Rain
  • D
    Cloud
    Correct
8
In higher plants, water is transported in by specialized tissue called
  • A
    Phloem
  • B
    Parenchyma
  • C
    Xylem
    Correct
  • D
    Stomata
9
River water is unfit for drinking because it has
  • A
    Aquatic organism
  • B
    Suspended impurities and pollutants
    Correct
  • C
    More salts than required
  • D
    All of these
10
which of the following are not the liquid forms of water (i)Snow (ii)Lake water (iii)River water (iv)water vapour (v) ice
  • A
    (I),(IV) AND (V)
    Correct
  • B
    (II) and (iii)
  • C
    (iv) only
  • D
    (I) AND (II)
11
Loss of water by plants is called
  • A
    Transpiration
    Correct
  • B
    Evaporation
  • C
    Transportation
  • D
    Condensation
12
What is the upper boundary of zone of saturation called?
  • A
    Water table
    Correct
  • B
    Alluvial plain
  • C
    Wet soil
  • D
    Evaporation
13
Sink hole is made when water table is more than ----
  • A
    Run off
    Correct
  • B
    Septic tank
  • C
    Well
  • D
    Caves
14
In water cycle, sun’s energy causes
  • A
    Circulation
  • B
    Condensation
  • C
    Percolation
  • D
    Evaporation
    Correct
15
Which of the following statements is correct about ground water?
  • A
    It is trapped inside the rocks
    Correct
  • B
    It is main source of irrigation
  • C
    It is important part of water cycle
  • D
    It is formed by evaporation