If you are seeking for MCQ on Class 3 Science Soil you have come to the correct source.
What is the topmost layer of the earth called?
a) Rock
b) Soil
c) Humus
d) Clayey
Answer: b) Soil
What is the primary source of water and minerals for plants?
a) Air
b) Humus
c) Soil
d) Rocks
Answer: c) Soil
How is soil formed from rocks?
a) Freezing
b) Decomposition
c) Heating and cooling
d) Evaporation
Answer: c) Heating and cooling
Which natural factors help break rocks into smaller pieces during soil formation?
a) Volcanic eruptions
b) Earthquakes
c) Wind, water, and other factors
d) Sunlight
Answer: c) Wind, water, and other factors
What is humus in the soil formed from?
a) Rocks
b) Decomposed remains of plants and animals
c) Sand
d) Clay
Answer: b) Decomposed remains of plants and animals
How long does it take for one inch of topsoil to form?
a) 1 year
b) 50 years
c) 100 years
d) 500 years
Answer: c) 100 years
Which type of soil is ideal for growing crops because it contains water, air, and humus?
a) Sandy soil
b) Clayey soil
c) Loamy soil
d) Rocky soil
Answer: c) Loamy soil
What is the primary composition of manure?
a) Sand
b) Clay
c) Cow dung and decaying leaves
d) Humus
Answer: c) Cow dung and decaying leaves
Which type of soil is common near mountain foothills and deserts?
a) Loamy soil
b) Sandy soil
c) Clayey soil
d) Rocky soil
Answer: b) Sandy soil
What is the color of clayey soil?
a) Red
b) Black
c) White
d) Yellow
Answer: a) Red
Which type of soil is used in making glass and cement?
a) Sandy soil
b) Loamy soil
c) Clayey soil
d) Rocky soil
Answer: a) Sandy soil
What do earthworms contribute to the soil?
a) Water
b) Air
c) Nutrients and tunnels
d) Humus
Answer: c) Nutrients and tunnels
What is the primary purpose of adding manure to the soil?
a) Increase temperature
b) Enhance fertility with humus
c) Reduce soil erosion
d) Change soil color
Answer: b) Enhance fertility with humus
Which material does not come from the soil?
a) Bricks
b) Cement
c) Glass
d) Plastic
Answer: d) Plastic
Where is loamy soil often found?
a) Deserts
b) Riverbeds
c) Mountain foothills
d) Valleys surrounding rivers
Answer: d) Valleys surrounding rivers
Which soil type is smooth to touch and sticks together closely?
a) Sandy soil
b) Loamy soil
c) Clayey soil
d) Rocky soil
Answer: c) Clayey soil
What is the significance of humus in soil?
a) Increases soil acidity
b) Makes soil hard
c) Enhances fertility
d) Causes soil erosion
Answer: c) Enhances fertility
