Class VI Science Chapter 2: Sorting Materials into Groups

Multiple-choice question:
1. Which of the following is an example of a round-shaped object? 
a) Chair 
b) Bullock cart 
c) Rubber ball 
d) Cooking utensils

2. Why do we choose a particular material for making an object? 
a) Based on its availability 
b) Based on its cost 
c) Based on its properties and purpose of use 
d) Based on its popularity

3. Which property describes how materials look different from each other? 
a) Hardness 
b) Lustre 
c) Transparency 
d) Appearance

4. Which group of materials appears shiny? 
a) Wood and cloth 
b) Copper wire and aluminium sheet 
c) Chalk and cardboard 
d) Iron and stone

5. What property determines whether a material is hard or soft? 
a) Lustre 
b) Transparency 
c) Hardness 
d) Appearance

6. Which statement is true about transparent materials? 
a) They cannot be seen through. 
b) They dissolve easily in water. 
c) They have a shiny appearance. 
d) They allow objects to be seen clearly.

7. Which type of materials are glass, water, and air? 
a) Opaque 
b) Translucent 
c) Transparent 
d) Insoluble

8. What happens to substances that are insoluble in water? 
a) They disappear completely in water. 
b) They float or sink. 
c) They dissolve in water. 
d) They mix with water.

9. Give an example of an object that floats in water. 
a) Stone 
b) Metal key 
c) Dried leaves 
d) Coin

10. Which statement is true about translucent materials? 
a) They allow objects to be seen partially. 
b) They do not mix with water. 
c) They have a shiny appearance. 
d) They cannot be scratched easily.

11. What is the palm of your hand classified as? 
a) Opaque 
b) Transparent 
c) Translucent 
d) Insoluble

12. How do we usually group materials at home for convenience? 
a) Based on their colour 
b) Based on their shape 
c) Based on their weight 
d) Based on their similarities or uses

13. Why is grouping materials useful? 
a) It makes them look more appealing. 
b) It helps us find them easily. 
c) It makes them easier to manufacture. 
d) It allows us to observe patterns in their properties.

14. What property is used to describe how materials can be compressed or scratched? 
a) Appearance 
b) Transparency 
c) Hardness 
d) Lustre

15. What property describes how well materials mix with water? 
a) Appearance 
b) Hardness 
c) Transparency 
d) Solubility

16. What property is used to classify materials as opaque, transparent, or translucent? 
a) Appearance 
b) Hardness 
c) Lustre 
d) Transparency

17. Which group of materials is mentioned as examples of transparent materials? 
a) Wood and metal 
b) Copper and stone 
c) Glass and water 
d) Chalk and cardboard

18. What property is used to describe how materials look different from each other? 
a) Hardness 
b) Lustre 
c) Transparency 
d) Appearance

19. What property determines whether a material is hard or soft? 
a) Lustre 
b) Transparency 
c) Hardness 
d) Appearance

20. Which materials are considered opaque? 
a) Glass, water, and air 
b) Wood, cardboard, and metals 
c) Sugar, salt, chalk powder, and sand 
d) Vinegar, lemon juice, mustard oil, and kerosene

21. What property is used to describe how materials mix with water? 
a) Appearance 
b) Hardness 
c) Transparency 
d) Solubility

22. What property is used to classify materials as opaque, transparent, or translucent? 
a) Appearance 
b) Hardness 
c) Lustre 
d) Transparency

23. Which group of materials is mentioned as examples of transparent materials? 
a) Wood and metal 
b) Copper and stone 
c) Glass and water 
d) Chalk and cardboard

24. What property determines whether a material is hard or soft? 
a) Lustre 
b) Transparency 
c) Hardness 
d) Appearance

25. Which materials are considered opaque? 
a) Glass, water, and air 
b) Wood, cardboard, and metals 
c) Sugar, salt, chalk powder, and sand 
d) Vinegar, lemon juice, mustard oil, and kerosene

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Q. True/false :
1.  Objects around us have different shapes, colours, and uses.
2.  Objects can only be grouped based on their shape.
3.  All objects are made of the same material.
4.  The properties of materials have no influence on their usage.
5.  Lustre is a property that describes the appearance of materials.
6.  Shiny materials are usually metals.
7.  Hardness is a property that determines how easily a material can be compressed or scratched.
8.  All substances added to water dissolve completely.
9.  Transparent materials allow objects to be seen clearly.
10.  Opaque materials cannot be scratched easily.
11.  Solubility is a property that describes how well materials mix with water.
12.  Insoluble solids float on the surface of water.
13.  Materials that dissolve in water are considered opaque.
14.  All liquids mix completely with water.
15.  Transparent materials are always smooth.
16.  Translucent materials allow light to pass through but objects cannot be seen clearly.
17.  Appearance is the only property used to group materials.
18.  Lustre and hardness are properties that describe the appearance of materials.
19.  Opaque materials allow light to pass through.
20.  Materials can be classified as transparent, opaque, or translucent based on their solubility in water.
21.  Opaque materials are always rough.
22.  Soft materials are difficult to compress.
23.  All transparent materials are also translucent.
24.  Lustre can be observed on the freshly cut surface of metals.
25.  Hardness is a property that determines how easily a material can be dissolved in water.
26.  Solubility is a property that describes how well materials mix with liquids.
27.  Insoluble solids sink to the bottom of water.
28.  The properties of materials can be used to group them conveniently.
29.  Grocers keep similar objects together for ease of locating them.
30.  Grouping materials helps in understanding their properties and observing patterns.
31.  The purpose of an object does not influence the choice of material for its construction.
32.  Lustre, hardness, and transparency are properties important for material usage.
33.  Lustre and transparency are properties used to describe the appearance of materials.
34.  All shiny materials are metals.
35.  Soft materials cannot be scratched easily.
36.  Insoluble substances disappear completely when added to water.
37.  Transparent materials allow light to pass through but objects cannot be seen clearly.
38.  Appearance, hardness, and transparency are properties used to group materials.
39.  Lustre and hardness are properties that describe the appearance of materials.
40.  Opaque materials always have a rough texture.
41.  Hard materials are difficult to compress.
42.  Translucent materials allow light to pass through but objects cannot be seen clearly.
43.  The freshly cut surface of metals does not exhibit any lustre.
44.  The solubility of a material determines its hardness.
45.  Solubility is a property that describes how well materials mix with air.
46.  Insoluble solids always float on the surface of water.
47.  Materials can be conveniently grouped based on their properties.
48.  Grocers keep similar objects together for ease of manufacturing them.
49.  Grouping materials does not assist in understanding their properties or observing patterns.
50.  The choice of material for an object is not influenced by its purpose.