Class 7 Science Chapter 9 MCQs Questions With Answers NCERT
We have compiled the NCERT MCQ Questions for Class 7 Science Chapter 9 Soil with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 7 Science with Answers on a daily basis and score well in exams. Refer to the Soil Class 7 MCQs Questions with Answers here along with a detailed explanation.
Soil Class 7 MCQ
Choose the correct option.
Question 1.
Soil is the substance which makes up the _________ of the earth.
(a) rock
(b) layers
(c) surface
(d) all of the above
Answer
Answer: (c) surface
Question 2.
Which one of the following is a step in the formation of soil?
(a) Earthquakes or volcanic eruptions
(b) Weathering of rocks
(c) Addition of humus
(d) All of these
Answer
Answer: (d) All of these
Question 3.
Which factor influences soil formation?
(a) Climate
(b) Vegetation
(c) Microorganism
(d) All of these
Answer
Answer: (d) All of these
Question 4.
Which of the following does not cause soil erosion?
(a) Deforestation
(b) Terrace farming
(c) Floods
(d) Overgrazing
Answer
Answer: (b) Terrace farming
Question 5.
Soil conservation measures are mainly aimed at protecting
(a) plants
(b) top soil
(c) sub soil
(d) soil organisms
Answer
Answer: (b) top soil
Question 6.
In which horizon of soil minerals are found? .
(a) A
(b) B
(c) C
(d) None
Answer
Answer: (b) B
Question 7.
The best top soil for growing plants is
(a) sandy soil
(b) loamy soil
(c) clayey soil
(d) all of these
Answer
Answer: (b) loamy soil
Question 8.
The mixture of rock particles and humus is called
(a) soil
(b) weathering
(c) silt
(d) gravel
Answer
Answer: (a) soil
Question 9.
One of the following is not a type of soil. This one is
(a) loamy soil
(b) silty soil
(c) clayey soil
(d) sandy soil
Answer
Answer: (b) silty soil
Question 10.
Which of the following has smallest size soil particles?
(a) Gravel
(b) Silt
(c) Clay
(d) Sand
Answer
Answer: (c) Clay
Question 11.
Cotton grows well in
(a) black soil
(b) laterite soil
(c) red soil
(d) loamy soil
Answer
Answer: (a) black soil
Question 12.
In which of the following humus is present in reasonable amount
(a) A-horizon
(b) B-horizon
(c) C-horizon
(d) Bedrock
Answer
Answer: (a) A-horizon
Question 13.
Which of the following cannot prevent soil erosion?
(a) Reforestation
(b) Deforestation
(c) Silviculture
(d) Plantation
Answer
Answer: (b) Deforestation
Question 14.
The topmost layer of soil is known as
(a) top soil
(b) sandy soil
(c) sub soil
(d) bed soil
Answer
Answer: (a) top soil
Question 15.
Sandy soils are found in
(a) hilly areas
(b) tropical region
(c) deserts
(d) polar region
Answer
Answer: (c) deserts
Question 16.
Less humus and more minerals occur in the
(a) A-horizon
(b) B-horizon
(c) C-horizon
(d) bedrock
Answer
Answer: (c) C-horizon
Question 17.
Which of these has the smallest size of particles?
(a) Sand
(b) Silt
(c) Clay
(d) Gravel
Answer
Answer: (c) Clay
Question 18.
Which type of soil is the best for growing cotton?
(a) Sandy
(b) Clayey
(c) Loamy
(d) Sandy-loam
Answer
Answer: (d) Sandy-loam
Question 19.
Which of these do not cause weathering?
(a) Clouds
(b) Wind
(c) Flowing water
(d) Freezing of rainwater
Answer
Answer: (a) Clouds
Question 20.
Which horizon consists of small lumps of rocks with cracks and crevices?
(a) A-horizon
(b) B-horizon
(c) C-horizon
(d) None of these
Answer
Answer: (c) C-horizon
Question 21.
Water logging can be expected in the soil which is rich in
(a) sand
(b) clay
(c) silt
(d) humus
Answer
Answer: (b) clay
Question 22.
Paddy grows best in
(a) clayey soil
(b) loamy soil
(c) sandy soil
(d) sandy-loam soil
Answer
Answer: (a) clayey soil
Question 23.
Which of the following factors influences soil formation?
(a) Climate
(b) Vegetation
(c) Parent rock
(d) All of these
Answer
Answer: (d) All of these
Question 24.
The breaking of rocks by the action of wind, water and climate is called
(a) soil profile
(b) humus
(c) weathering
(d) water logging
Answer
Answer: (c) weathering
Question 25.
The layer which is soft, porous and can retain more water is
(a) topsoil
(b) B-horizon
(c) C-horizon
(d) bedrock
Answer
Answer: (a) topsoil
Fill in the blanks with suitable word/s.
Question 1.
B-horizon is also known as ………………
Answer
Answer: sub-soil
Question 2.
…………….. is removed during soil erosion.
Answer
Answer: Top soil
Question 3.
The soil with large amount of fine particles is called ……………… soil.
Answer
Answer: clayey
Question 4.
The soil with a mixture of humus, sand and clay is called ……………… soil.
Answer
Answer: loamy
Question 5.
……………… soil is fit for cultivation.
Answer
Answer: Loamy
Question 6.
Percolate means ……………… or ……………… gradually
Answer
Answer: filter, ooze
Question 7.
Soil ……………… water and also holds it.
Answer
Answer: absorbs
Question 8.
The soil with larger particles in it is called ……………… soil.
Answer
Answer: sandy
Question 9.
……………… horizon of soil contains very less organic matter.
Answer
Answer: B
Question 10.
Soil is formed by ……………… of rocks.
Answer
Answer: weathering
Question 11.
The upper crust of earth, which is capable of supporting vegetation is called ………………
Answer
Answer: soil
Question 12.
A vertical section through different layers of the soil is called the ………………
Answer
Answer: soil profile
Question 13.
……………… soil has least water holding capacity.
Answer
Answer: Sandy
Question 14.
Accumulation of wastes in the soil generated by human activity which alter the features of soil is called ………………
Answer
Answer: soil pollution
Question 15.
The dark colour of the top soil is due to the presence of ……………… in it.
Answer
Answer: humus
Question 16.
The uppermost layer of the earth’s crust which is composed of a thin layer of mineral particles is called ……………….
Answer
Answer: soil
Question 17.
A layer of dead and decaying plant and animal remains is called ……………….
Answer
Answer: Humus
Question 18.
………………. is called the uppermost layer of the soil and it is also known as ‘A’ horizon.
Answer
Answer: Topsoil
Question 19.
The removal of soil by running water and wind is known as soil ……………….
Answer
Answer: Erosion
Question 20.
Soil is formed by ………………. of rocks.
Answer
Answer: weathering
Question 21.
………………. soil is used to make pots, toys and statue.
Answer
Answer: Clayey
True or False
Question 1.
Soil can be acidic, alkaline or neutral.
Answer
Answer: True
Question 2.
Upper portion of soil always contain air.
Answer
Answer: True
Question 3.
Capacity to hold water is more in clayey soil.
Answer
Answer: True
Question 4.
Clayey soil is used for making pots.
Answer
Answer: True
Question 5.
Polythene bags and plastics pollute the soil.
Answer
Answer: True
Question 6.
Erosion of soil is more severe in areas with high vegetation.
Answer
Answer: False
Question 7.
Sub soil is rich in humus.
Answer
Answer: False
Question 8.
Size of soil particles is greater than 2.00 mm in gravel.
Answer
Answer: True
Question 9.
The upper crust of the earth, which is capable of supporting vegetation is called soil.
Answer
Answer: True
Question 10.
Wheat, rice, sugarcane are grown in clayey soil.
Answer
Answer: True
Question 11.
Tilling is necessary for replenishment of soil nutrients.
Answer
Answer: True
Question 12.
Deforestation leads to soil erosion.
Answer
Answer: True
Question 13.
The rotting dead matter in the soil is called humus.
Answer
Answer: True
Question 14.
A vertical section through different layers of the soil is called the soil profile.
Answer
Answer: True
Question 15.
Soil is a waste natural resource.
Answer
Answer: False
Question 16.
Water logging occurs in sandy soil.
Answer
Answer: False
Question 17.
The soil is a natural resource.
Answer
Answer: True
Question 18.
Since clay holds more water, it is good for plants as they get plenty of water.
Answer
Answer: True
Question 19.
Humus is formed by the action of microbes on the soil.
Answer
Answer: True
Question 20.
Soil without humus is not fertile.
Answer
Answer: True
Question 21.
Water holding capacity and percolation rate are the same things.
Answer
Answer: False
Match the Following
| Column I | Column II |
| 1. Earthworm | (a) Sand and beaches |
| 2. Garden lizard | (b) Deep, narrow holes in dry soils |
| 3. Crab | (c) Growing of mosses and ferns on rock |
| 4. Rodents | (d) Soil pollution |
| 5. Scorpion | (e) Acid rain |
| 6. Snails and slugs | (f) Surface of soil |
| 7. Plastics and polythene bags | (g) Surface of shaded moist soils |
| 8. Physical weathering | (h) Burrows in soil |
| 9. Chemical weathering | (i) Falling water on rocks |
| 10. Biological weathering | (j) Horizon-A of moist soil |
Answer
Answer:
| Column I | Column II |
| 1. Earthworm | (j) Horizon-A of moist soil |
| 2. Garden lizard | (f) Surface of soil |
| 3. Crab | (a) Sand and beaches |
| 4. Rodents | (h) Burrows in soil |
| 5. Scorpion | (b) Deep, narrow holes in dry soils |
| 6. Snails and slugs | (g) Surface of shaded moist soils |
| 7. Plastics and polythene bags | (d) Soil pollution |
| 8. Physical weathering | (i) Falling water on rocks |
| 9. Chemical weathering | (e) Acid rain |
| 10. Biological weathering | (c) Growing of mosses and ferns on rock |
| Column A | Column B |
| 1. Paddy | a. Loamy soil |
| 2. Lentils | b. Parent rocks |
| 3. Cotton | c. Clayey soil |
| 4. Bedrock | d. Topsoil |
| 5. Humus | e. Sandy-loam soil |
Answer
Answer:
| Column A | Column B |
| 1. Paddy | c. Clayey soil |
| 2. Lentils | a. Loamy soil |
| 3. Cotton | e. Sandy-loam soil |
| 4. Bedrock | b. Parent rocks |
| 5. Humus | d. Topsoil |
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