Which one of the following is a step in the formation of soil?
  • Earthquakes or volcanic eruptions
  • Weathering of rocks
  • Addition of humus
  • All are involved in the formation of soil
In which horizon of soil minerals are found?
  • A
  • B
  • C
  • None of these
Which physical property of soil is important to us?
  • Texture
  • Water holding capacity
  • Both of these
  • None of these
Which of the following type of soil will form a colloidal solution when suspended in water?
  • Clay
  • Silt
  • Sand
  • Gravel
Which factor influences soil formation?
  • Climate
  • Vegetation
  • Parent rock
  • All of these
The proportion of sand, silt and clay in a soil sample determines
  • structure
  • texture
  • nutrient potential
  • fertility level
The microorganisms present in the soil require moisture (water) and nutrients for growth and survival. Choose from the options below the habitat (place) where the soil has plenty of water and nutrients.
  • Desert
  • Forest
  • Open field
  • Cricket ground
Availability of water and minerals in the soil for maximum absorption by roots is in the:
  • B-horizon
  • C-horizon
  • A-horizon
  • Surface of soil
Soil conservation measures are mainly aimed at protecting which of the following?
  • Plants
  • Topsoil
  • Sub soil
  • Soil organisms
Match the column
class7-science-chapter-9-mcq-1.png
  • p ->i, q ->iii, r ->ii
  • p ->ii, q ->iii, r ->i
  • p ->i, q ->ii, r ->iii
  • p ->iii, q ->ii, r ->i
Soil conservation measures are mainly aimed at protecting which of the following?
  • Plants
  • Top soil
  • Sub soil
  • Soil organisms
Order of Percolation rate of water
  • Sandy soil > loamy soil > clayey soil
  • clayey soil > Sandy soil > loamy soil
  • clayey soil > loamy soil > Sandy soil
  • same in all three
which soil is used for pots, toys and statues
  • Clayey Soil
  • Sandy soil
  • loamy soil
  • Sand
What is the collective name for layers of soil?
  • Sedimentation
  • Weathering
  • Erosion
  • Soil profile
which of the following does not cause soil erosion?
  • Floods
  • Soil grazing
  • Fragmentation of rocks
  • Deforestation
Which of the following is correct statement
  • Cotton is grown in sandy loam soil
  • The rotting dead matter in the soil is called humus.
  • weathering is the process where soil is formed by the breaking down of rocks by the action of wind, water and climate
  • All the above
The  component of soil which make air above the soil shimmer  in the farmland on a hot summer day
  • air
  • humus
  • sand
  • water
Which of the following organisms makes the soil porous?
  • Centipedes
  • Mille-pedes
  • Beetles
  • Earthworms
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