NCERT Solutions for Class 7 Science Chapter 9: Soil

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NCERT Solutions for Class 7 Science Chapter 9 Soil are provided in this article. Key concepts covered in this chapter are:

Soil Profile
Soil Types
Properties of Soil
Moisture in Soil
Absorption of Water by Soil

Download PDF: NCERT Solutions for Class 7 Science Chapter 9 Soil

NCERT Solutions for Class 7 Science Chapter 9

NCERT Solutions for Class 7 Science Chapter 9 Soil are given in the following PDF:

NCERT Solutions

Class 7 Science Chapter 9 Soil: Important Topics

Soil is a material found on most of the surface of earth comprised of organic matter, minerals, gases, liquids, and organisms that together support life. It is composed of mineral particles, organic materials, air, water, and living organisms—all of which interact slowly yet constantly.

Soil Profile

Soil profile is referred to as as the vertical section of the soil from the ground surface downwards to where the soil meets the rock. It helps to examine the structure of soil. A soil profile is divided into layers which are known as horizons. The main soil horizons are A, B, C, and D.

The layers of soil can be identified by the soil colour as well as by the size of soil particles. The different layers of soil are:

Topsoil
Subsoil
Parent rock

Soil Types

A soil type is referred to as a taxonomic unit in soil science. All soils that share a certain set of well-defined properties form a distinctive soil type.

Soil is classified into four types:

Sandy soil
Silt Soil
Clay Soil
Loamy Soil

Properties of Soil

The physical properties of soil include texture, structure, density, porosity, consistency, temperature, and color.

Soil texture
Soil structure
Soil density
Soil porosity
Soil consistency (plasticity)
Soil temperature

Chapter Related Links:

Agriculture Seeds Selection Sowing	Agriculture Soil	Cyclone
Weathering	Pressure system	Tornado Bottle

Class 7 Science Additional Resources:

CBSE Class 7 Science NCERT Textbook	CBSE Class 7 Science Sample Paper	NCERT Solutions

CBSE X Related Questions

1.
State two ways to prevent the rusting of iron.

View Solution

2.
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.

View Solution

3.
Which of the statements about the reaction below are incorrect?
\(\text{ 2PbO(s) + C(s) → 2Pb(s) + C}O_2\text{(g)}\)
(a) Lead is getting reduced.
(b) Carbon dioxide is getting oxidized.
(c) Carbon is getting oxidized.
(d) Lead oxide is getting reduced.

(a) and (b)
(a) and (c)
(a), (b) and (c)
all

View Solution

4.
A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?
(b) Why does this milk take a long time to set as curd?

View Solution

5.
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 10⁸ m s⁻¹.

View Solution

6.
Explain the following in terms of gain or loss of oxygen with two examples each.
(a) Oxidation
(b) Reduction

View Solution

View All

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NCERT Solutions for Class 7 Science Chapter 9: Soil

NCERT Solutions for Class 7 Science Chapter 9

Class 7 Science Chapter 9 Soil: Important Topics

Soil Profile

Soil Types

Properties of Soil

CBSE X Related Questions

1.
State two ways to prevent the rusting of iron.

2.
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.

3.
Which of the statements about the reaction below are incorrect?
\(\text{ 2PbO(s) + C(s) → 2Pb(s) + C}O_2\text{(g)}\)
(a) Lead is getting reduced.
(b) Carbon dioxide is getting oxidized.
(c) Carbon is getting oxidized.
(d) Lead oxide is getting reduced.

4.
A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?
(b) Why does this milk take a long time to set as curd?

5.
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 10⁸ m s⁻¹.

6.
Explain the following in terms of gain or loss of oxygen with two examples each.
(a) Oxidation
(b) Reduction

Similar Science Concepts

Comments

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NCERT Solutions for Class 7 Science Chapter 9: Soil

NCERT Solutions for Class 7 Science Chapter 9

Class 7 Science Chapter 9 Soil: Important Topics

Soil Profile

Soil Types

Properties of Soil

CBSE X Related Questions

1. State two ways to prevent the rusting of iron.

2. What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.

3. Which of the statements about the reaction below are incorrect?\(\text{ 2PbO(s) + C(s) → 2Pb(s) + C}O_2\text{(g)}\)(a) Lead is getting reduced. (b) Carbon dioxide is getting oxidized. (c) Carbon is getting oxidized. (d) Lead oxide is getting reduced.

4. A milkman adds a very small amount of baking soda to fresh milk. (a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline? (b) Why does this milk take a long time to set as curd?

5. Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 m s−1.

6. Explain the following in terms of gain or loss of oxygen with two examples each. (a) Oxidation(b) Reduction

Similar Science Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
State two ways to prevent the rusting of iron.

2.
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.

3.
Which of the statements about the reaction below are incorrect?
\(\text{ 2PbO(s) + C(s) → 2Pb(s) + C}O_2\text{(g)}\)
(a) Lead is getting reduced.
(b) Carbon dioxide is getting oxidized.
(c) Carbon is getting oxidized.
(d) Lead oxide is getting reduced.

4.
A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?
(b) Why does this milk take a long time to set as curd?

5.
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 10⁸ m s⁻¹.

6.
Explain the following in terms of gain or loss of oxygen with two examples each.
(a) Oxidation
(b) Reduction