Class 7 Soil CBSE Questions & Answers

Class 7 · Soil

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

Questions & Answers

1
Deforestation causes soil erosion faster because
  • A
    Roots provided nutrients
  • B
    Roots hold the soil firmly
    Correct
  • C
    Roots absorbs water
  • D
    Roots absorb minerals
2
The type of rock particle present along with other material are called
  • A
    Texture
    Correct
  • B
    Mixture
  • C
    Profile
  • D
    Sediments
3
Which of the following is not a force of weathering?
  • A
    Sunlight
  • B
    Air
  • C
    River
  • D
    Animals
    Correct
4
Upper layer of soil is dark coloured due to presence of
  • A
    Humus
    Correct
  • B
    Earthworms
  • C
    Presence of iron
  • D
    Inorganic materials
5
Amount of water retained by soil is called
  • A
    Humidity of soil
  • B
    Precipitation
  • C
    Water holding capacity
    Correct
  • D
    Moisture in the soil
6
_____________ is the process in which soil is washed out by rain water.
  • A
    Deforestation
  • B
    Aforestation
  • C
    Soil erosion
    Correct
  • D
    Implantation
7
The earthy fragrance of soil after the first rain is always
  • A
    Tearing
  • B
    Rotten egg smelling
  • C
    Foul smelling
  • D
    Refreshing
    Correct
8
Polythene and plastics ______________ the soil.
  • A
    Pollute
    Correct
  • B
    Increase fertility
  • C
    Manure
  • D
    Erode
9
Soil is formed by
  • A
    Addition of humus
  • B
    Manuring the field
  • C
    Ploughing of field
  • D
    Breaking down of rock
    Correct
10
Upper layer of soil is dark coloured due to presence of
  • A
    Presence of ironThe upper layer of soil is dark coloured due to presence of humus. Humus is formed by decomposition of dead plants and animals.
  • B
    Earthworms
  • C
    Humus
    Correct
  • D
    Inorganic materials
11
Soil profile is the
  • A
    Longitudinal section of the soil
  • B
    Upper layer of the soil
  • C
    Horizontal section of the soil
  • D
    Vertical section through the soil
    Correct
12
Root of the plant are present in
  • A
    C-Horizon
  • B
    B- Horizon
  • C
    A-Horizon
    Correct
  • D
    D-Horizon
13
If soil contains greater proportion of big particles the soil is called
  • A
    Laterite soil
  • B
    Mountain soil
  • C
    Sandy soil
    Correct
  • D
    Alluvial soil
14
In loamy soil
  • A
    Only small sized particles are present
  • B
    Amount of small particles are more
  • C
    Amount of large particles are more
  • D
    Amount of large and small particles are same
    Correct
15
The soil used for making matkas and surahis is
  • A
    Loamy soil
    Correct
  • B
    Alluvial soil
  • C
    Sandy soil
  • D
    Clayey soil