# Balbharati solutions for General Science 7th Standard Maharashtra State Board chapter 3 - Properties of Natural Resources [Latest edition]

## Chapter 3: Properties of Natural Resources

Exercise
Exercise [Page 25]

### Balbharati solutions for General Science 7th Standard Maharashtra State Board Chapter 3 Properties of Natural Resources Exercise [Page 25]

Exercise | Q 1.1 | Page 25

Fill in the blanks with the appropriate term.

The capacity of air to hold moisture depends upon the ........... of the air.

• Temperature

• volume

• mass

• density

• humidity

• acidic

• weight

• neutral

• shape

Exercise | Q 1.2 | Page 25

Fill in the blanks with the appropriate term.

(Temperature, volume, mass, density, humidity, acidic, weight, neutral, shape.)

Water does not have a ........... but has definite ........... and ........... .

Exercise | Q 1.3 | Page 25

Fill in the blanks with the appropriate term.

While freezing, the ........... of water is lowered.

• Temperature

• volume

• mass

• density

• humidity

• acidic

• weight

• neutral

• shape

Exercise | Q 1.4 | Page 25

Fill in the blanks with the appropriate term.

........... soil has pH 7.

• Temperature

• volume

• mass

• density

• humidity

• acidic

• weight

• neutral

• shape

Exercise | Q 2.1 | Page 25

Why is it said that Air is a homogeneous mixture of various gases.

Exercise | Q 2.2 | Page 25

Why is it said that Water is a universal solvent.

Exercise | Q 2.3 | Page 25

Why is it said that There is no alternative to water for cleaning purposes.

Exercise | Q 3.1 | Page 25

What will happen if the amount of water vapour in the air increases.

Exercise | Q 3.2 | Page 25

What will happen only one crop is grown repeatedly

Exercise | Q 4 | Page 25

With whom should I pair up?

 Group A Group B 1 Air a Excretion 2 Water b Scattering of light 3 Soil c Plasticity
Exercise | Q 5.1 | Page 25

State whether the following statement is true or false.

Sandy soil has low capacity for holding water.

• True

• False

Exercise | Q 5.2 | Page 25

State whether the following statement is true or false.

Sea water is a bad conductor of electricity.

• True

• False

Exercise | Q 5.3 | Page 25

State whether the following statement is true or false.

The substance in which a solute dissolves is called a solvent.

• True

• False

Exercise | Q 5.4 | Page 25

State whether the following statement is true or false.

The pressure exerted by air is called atmospheric pressure.

• True

• False

Exercise | Q 6 | Page 25

Explain the picture in your own words.

Exercise | Q 7.1 | Page 25

How is light scattered by the air?

Exercise | Q 7.2 | Page 25

Explain the various properties of water.

Exercise | Q 7.3 | Page 25

Why is the density of seawater more than that of rain water?

Exercise | Q 7.4 | Page 25

What is the importance of good soil structure?

Exercise | Q 7.5 | Page 25

What are the various uses of soil?

Exercise | Q 7.6 | Page 25

What is the need and importance of soil testing from the point of view of farmers?

Exercise | Q 7.7 | Page 25

What is the importance of air in transmission of sound?

Exercise | Q 7.8 | Page 25

Why should a glass bottle completely filled with water never be kept in a freezer?

Exercise

## Balbharati solutions for General Science 7th Standard Maharashtra State Board chapter 3 - Properties of Natural Resources

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Concepts covered in General Science 7th Standard Maharashtra State Board chapter 3 Properties of Natural Resources are Air Around Us, Physical Properties of Water, Importance of Water, Soil: "Teeming with Life", Different Types of Soil, Structure of Soil, Uses of Soil, Soil Testing, Soil Degradation, Water - a Universal Solvent.

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