Class 6 Science Chapter 5 Oxford Solutions

Introduction to Class 6 Science Chapter 5 Oxford Solutions: Sorting of Materials

Class 6 Science Chapter 5 Oxford Solutions – Sorting Materials introduces students to the concept of grouping materials based on their physical properties. The chapter explores how we can classify materials into different groups based on characteristics like color, shape, texture, hardness, and solubility.

Students will learn about the importance of sorting materials for various practical uses, from recycling to understanding how different substances interact with each other. This chapter also covers how materials like metals, plastics, and fabrics are categorized, and why such sorting is essential in our daily lives and in industries.

Class 6 Science Chapter 5 Oxford Solutions – Sorting Materials

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
2. Which of the following can be compressed to a small extent?
a. Gases                                      b. Liquids
c. Solids                                      d. None of these
3. Which of the following is translucent?
a. Cellophane paper                   b. Oiled paper
c. Water                                       d. Wood
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.

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

6. Which of the following is a conductor of heat?
a. Metals                                     b. Plastic
c. Bamboo                                  d. Glass
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
8. Which of the following materials will sink in water?
a. Wood                                 b. Feather
c. Rock                                  d. Leaf
9. Which of the following gases is soluble in water?
a. Hydrogen                        b. Nitrogen
c. Helium                            d. Carbon dioxide
10. Which of the following is a conductor of electricity?
a. Air                                    b. Copper wire
c. Plastic                             d. Wood
Ans:
a. A sandpaper
b. Liquids
b. Oiled paper
d. Its particles are closely packed
c. Wax
a. Metals
a. Solid state
c. Rock
d. Carbon dioxide
b. Copper wire
II. Very short answer type questions.
A. Give two examples for the following.
1. Soft materials
2. Transparent materials
3. Opaque materials
4. Gases insoluble in water
5. Magnetic materials
6. Insulators of heat
Ans:
Soft materials: Cotton, Sponge
Transparent materials: Glass, Clear plastic
Opaque materials: Wood, Metal
Gases insoluble in water: Hydrogen, Nitrogen
Magnetic materials: Iron, Nickel
Insulators of heat: Plastic, Wood
B. Give one word for the following.
1. Materials that have uneven or bumpy surface
2. Materials that do not allow light to pass through them
3. Liquids that are soluble in water
4. Materials that are attracted to a magnet
5. Materials that do not have a definite shape and volume
Ans:
Rough
Opaque
Miscible
Magnetic
Gas
III. Short answer type questions.
1. Which property of metals makes them suitable for making jewellery?
→ 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).

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 Chapter 5 Oxford Solutions – Sorting Materials

Class 6 Science Chapter 5 Oxford Solutions – Sorting Materials

📘 Math & Science Solutions by Class

🔹 Class 10

🔹 Class 9

🔹 Class 8

🔹 Class 7

🔹 Class 6

🔹 Class 12

🔹 Class 11