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
________________minerals are compounds present in unaltered rock. These are mostly silicate minerals.
  • A
    Secondary
  • B
    Primary
    Correct
  • C
    Parent
  • D
    Tertiary
2
Root of the plants are present in
  • A
    B- Horizon
  • B
    C-Horizon
  • C
    D-Horizon
  • D
    A-Horizon
    Correct
3
What is the best soil texture in terms of water availability for plants?
  • A
    Silt soils
  • B
    Loamy soils
    Correct
  • C
    Clayey soils
  • D
    Sandy soils
4
Usually, a fertile soil will have
  • A
    A very high content of sodium
  • B
    A low colloid content
    Correct
  • C
    A low pH
  • D
    A high base status
5
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
6
In the soil water budget, when precipitation exceeds water use?
  • A
    The water need is decreased
  • B
    A storage withdrawals occurs
  • C
    A soil water shortage is created
  • D
    A water surplus exists
    Correct
7
Distinctive horizontal layers that differ in physical composition, chemical composition, organic content are called
  • A
    orizons
  • B
    Layering
  • C
    Soil profile H
    Correct
  • D
    Soils
8
The usual vertical sequence of horizons in a soil from the surface downward are
  • A
    A, B, C, D, E
  • B
    A, B, C, D
    Correct
  • C
    O, E, A, B, C
  • D
    D, C, B, A, O
9
The display of horizons on a vertical cross section through the soil is termed as
  • A
    Soil strata
  • B
    Soil profile
    Correct
  • C
    Soil layer
  • D
    Soil ped
10
Which kind of particle is present in deepest layer in soil profile?
  • A
    Organic matter
  • B
    Clay soil
  • C
    Humus
  • D
    Bed rock
    Correct
11
A-Horizon is also known as
  • A
    Bed soil
  • B
    Top soil
    Correct
  • C
    Black soil
  • D
    Red soil
12
Which soil horizon usually has the maximum accumulation of silicate clay materials and organic matter
  • A
    A
  • B
    O
  • C
    C
    Correct
  • D
    B
13
Which of the following definitions describe the soil-forming process of leaching?
  • A
    The transport of clay particles forms the B horizons to the E horizons.
  • B
    The addition of material to the soil body.
  • C
    Surface erosion carries sediment away from the upper most layer of soil.
  • D
    Seeping of water dissolved soil materials and moving deeper soil
    Correct
14
The soil used for making matka’s and surahi’s is
  • A
    Clayey soil
  • B
    Sandy soil
  • C
    Loamy soil
    Correct
  • D
    Alluvial soil
15
Partially decomposed vegetative matter present in the soil is called
  • A
    Pied
  • B
    Humus
    Correct
  • C
    Oxides
  • D
    Horizon