Class 6 Science Ch 5 Sorting Materials-Oxford Book Solution

Introduction to Class 6 Science Ch 5 Sorting Materials-Oxford Book

Class 6 Science Ch 5 Sorting Materials-Oxford Book – introduces students to the classification of everyday objects based on their properties such as appearance, texture, hardness, solubility, and transparency.

This chapter helps learners observe, compare, and group materials scientifically, laying a strong foundation for understanding matter and its characteristics. Through engaging examples and activities, students develop critical thinking skills by exploring why and how materials are grouped for practical uses.

Class 6 Science Ch 5 Sorting Materials-Oxford Book

1. Objective type questions.|
A. Fill in the blanks with the correct words.
1. Glass sheets and flower petals are examples of……(smooth/rough) surfaces.
2. …….(Hard/Soft) materials can be compressed easily.
3. Materials that allow some light to pass through them are called……(transparent/translucent) materials.
4. …….. (Solids/Gases) are highly compressible
5. Liquids that do not dissolve in water are called ….(immiscible/soluble) water.
Ans:
Glass sheets and flower petals are examples of smooth surfaces.
Soft materials can be compressed easily.
Materials that allow some light to pass through them are called translucent materials.
Gases are highly compressible.
Liquids that do not dissolve in water are called immiscible in water.

B. Choose the correct option.
1. Which of the following has a rough surface?
a. A sandpaper b. Petals of a flower
c. Surface of an apple d. Glass sheet

Ans: a. A sandpaper

2. Which of the following can be compressed to a small extent?
a. Gases b. Liquids
c. Solids d. None of these

Ans: b. Liquids

3. Which of the following is translucent?
a. Cellophane paper b. Oiled paper
c. Water d. Wood

Ans: b. Oiled paper

4. Which of the following is a characteristic feature of a solid?
a. It has no definite shape.
b. It is highly compressible.
c. It has no definite volume.
d. Its particles are closely packed.

Ans: d. Its particles are closely packed

5. Which of the following is insoluble in water?
a. Common salt b. Sugar
c. Wax d. Carbon dioxide

Ans: c. Wax

6. Which of the following is a conductor of heat?
a. Metals b. Plastic
c. Bamboo d. Glass

Ans: a. Metals

7. Which of the following states of matter has close packing of particles?
a. Solid state b. Liquid state
c. Gaseous state d. All of these

Ans: a. Solid state

8. Which of the following materials will sink in water?
a. Wood b. Feather
c. Rock d. Leaf

Ans: c. Rock

9. Which of the following gases is soluble in water?
a. Hydrogen b. Nitrogen
c. Helium d. Carbon dioxide

Ans: d. Carbon dioxide

10. Which of the following is a conductor of electricity?
a. Air b. Copper wire
c. Plastic d. Wood
Ans: b. Copper wire

II. Very short answer type questions.
A. Give two examples for the following.
1. Soft materials

Ans: Cotton, Sponge

2. Transparent materials

Ans: Glass, Clear plastic

3. Opaque materials

Ans: Wood, Metal

4. Gases insoluble in water

Ans: Hydrogen, Nitrogen

5. Magnetic materials

Ans: Iron, Nickel

6. Insulators of heat
Ans: Plastic, Wood

Class 6 Science Ch 5 Sorting Materials-Oxford Book-1 mark

B. Give one word for the following.
1. Materials that have uneven or bumpy surface

Ans: Rough

2. Materials that do not allow light to pass through them

Ans: Opaque

3. Liquids that are soluble in water

Ans: Miscible

4. Materials that are attracted to a magnet

Ans: Magnetic

5. Materials that do not have a definite shape and volume

Ans: Gas

Class 6 Science Ch 5 Sorting Materials-Oxford Book-2 marks

III. Short answer type questions.

1. Which property of metals makes them suitable for making jewellery?
Ans: Metals are lustrous, which means they have a shiny appearance. This property makes them attractive and suitable for making jewellery.

2. Compare hard and soft materials with one example of each.
Ans: Hard materials cannot be easily compressed or scratched (e.g., iron).
Soft materials can be easily compressed or scratched (e.g., cotton).

3. What is floatation?
Ans: Floatation is the ability of an object to float on the surface of a liquid, usually water. It depends on the object’s density compared to the liquid.

4. Why are cooking utensils made of metals while their handles are made of wood or hard plastic?
Ans: Metals are good conductors of heat, so they cook food efficiently.
Handles are made of wood or plastic because they are poor conductors of heat and prevent burns while handling.

5. Why are electric cables made of metal wires?
Ans: Metals are good conductors of electricity, so they allow electric current to pass through easily, making them ideal for electrical wiring.

6. What are conductors and insulators of electricity? Give one example of each.
Ans: Conductors are materials that allow electricity to flow through them (e.g., copper).
Insulators are materials that do not allow electricity to flow through them (e.g., rubber).

Class 6 Science Ch 5 Sorting Materials-Oxford Book-4 marks

V. Long answer type questions.

1. Differentiate between transparent, translucent, and opaque materials. Give two examples for each.
Property
Transparent
Translucent
Opaque
Definition

Materials that allow all the light to pass through them.
Materials that allow some light to pass through them.
Materials that do not allow light to pass through them.
Visibility
Objects can be seen clearly through them.
Objects appear blurred or unclear.
Objects cannot be seen through them.
Examples
Glass, clean water
Oiled paper, frosted glass
Wood, metal

2. What is magnetism? Describe an activity to differentiate between magnetic and non-magnetic substances.
Magnetism is the property of a material to attract certain substances like iron, nickel, and cobalt. These materials are called magnetic substances, while materials that are not attracted by a magnet are called non-magnetic substances.

Activity to Identify Magnetic and Non-Magnetic Substances:
Materials needed: A magnet, iron nail, paper clip, rubber band, plastic spoon, coin.
Procedure:
Bring the magnet close to each object one by one.
Observe whether the object gets attracted to the magnet.
Observation:
Iron nail and paper clip are attracted → Magnetic.
Rubber band and plastic spoon are not attracted → Non-magnetic.

3. Describe grouping of materials depending upon their solubility in water.
Materials can be grouped into two main categories based on their solubility in water:
Soluble Substances:
These substances dissolve completely in water to form a clear solution.
Examples: Salt, sugar.
Insoluble Substances:
These substances do not dissolve in water and settle down or remain suspended.
Examples: Sand, chalk powder.
Importance of Grouping:
Grouping materials based on their solubility helps in understanding their properties and also aids in separation techniques in science and industry.

Class 6 Science Ch 5 Sorting Materials – Oxford Answers

Introduction to Class 6 Science Ch 5 Sorting Materials-Oxford Book

Class 6 Science Ch 5 Sorting Materials-Oxford Book

Class 6 Science Ch 5 Sorting Materials-Oxford Book-1 mark

Class 6 Science Ch 5 Sorting Materials-Oxford Book-2 marks

III. Short answer type questions.

Class 6 Science Ch 5 Sorting Materials-Oxford Book-4 marks

V. Long answer type questions.

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