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Class 6 Science Chapter 5 Objects Around Us
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Objects Around Us
Chapter: 5
PART – I
EXERCISE
1. Darken the circle of the correct answer-
(i) The space occupied by material is called:
(a) Matter.
(b) Mass.
(c) Volume.
(d) Arca.
Ans: (c) Volume.
(ii) Which is of the following is transparent:
(a) Wood.
(b) Glass.
(c) Iron.
(d) Paper.
Ans: (b) Glass.
(iii) Which of the following is translucent:
(a) Tumbler.
(b) Mirror.
(c) Oiled paper.
(d) Steel glass.
Ans: (c) Oiled paper.
(iv) Find out the odd one from following.
(a) Gold.
(b) Aluminium.
(c) Copper.
(d) Bamboo.
Ans: (d) Bamboo.
2. Which of the following objects are soluble in water and which are insoluble in water.
| Substances | soluble/insoluble |
| (a) Sugar | |
| (b) Coconut oil | |
| (c) Sand | |
| (d) Honey | |
| (e) Chalk powder | |
| (f) Rice powder | |
| (g) Salt |
Ans:
| Substances | soluble/insoluble |
| (a) Sugar | Soluble |
| (b) Coconut oil | Insoluble |
| (c) Sand | Insoluble |
| (d) Honey | Soluble |
| (e) Chalk powder | Insoluble |
| (f) Rice powder | Insoluble |
| (g) Salt | Soluble |
3. What is matter? Explain with examples.
Ans: Matter is anything that has mass and occupies space. Examples of matter are water (liquid), iron (solid), and air (gas).
4. From which two properties can we say that stone is a matter?
Ans: Two properties from we can say that stone is a matter:
(i) Stone has mass because it weighs something.
(ii) Stone occupies volume as it takes up space.
5. Write the name of four materials by which we can make a tumbler.
Ans: The name of the four materials we can make a tumbler:
(i) Glass.
(ii) Plastic.
(iii) Metal.
(iv) Stainless steel.
6. What is Lustre?
Ans: Lustre is the property of a material that makes its surface shiny and bright. Metals usually have lustre.
7. Write whether the following sentences are correct or incorrect.
(a) Wood is transparent, but glass is opaque.
Ans: Incorrect.
(b) Sawdust is soluble in water.
Ans: Incorrect.
(c) Salt is soluble in water.
Ans: Correct.
(d) A piece of wood floats in water.
Ans: Correct.
(e) Coconut oil is soluble in water.
Ans: Incorrect
(f) Glycerine is soluble in water.
Ans: Correct.
(g) Copper and iron are lustrous material.
Ans: Correct.
(h) Air is transparent.
Ans: Correct.
8. Match the materials with the objects from which the object is made up of –
| Object | Material |
| Notebook | Cotton |
| Nail | Wood |
| Chair | Glass |
| Tumbler | Paper |
| Thread | Iron |
Ans:
| Object | Material |
| Notebook | Paper |
| Nail | Iron |
| Chair | Wood |
| Tumbler | Glass |
| Thread | Cotton |
9. Name five objects that are made up of plastic.
Ans: Five objects that are made up of plastic are:
(i) Water bottle.
(ii) Plastic chair.
(iii) Pen.
(iv) Toy car.
(v) Food container.
10. Fill in the blanks.
(i) The same object can be made of different ____________.
Ans: Materials.
(ii) The method of arranging of objects in to groups is called _____________.
Ans: Classification.
(iii) The amount of matter present in an object is the __________ of the object.
Ans: Mass.
(iv) The space occupied by an object is ___________.
Ans: volume.
11. March the following according to their properties. Some objects of materials may have multiple properties.
| Object | Projecties |
| Steel plate | Soluble in Water |
| Glass bottle | Opaque |
| Wooden block | Transparent |
| Salt | Lustrous |
Ans:
| Object | Projecties |
| Steel plate | Lustrous |
| Glass bottle | Transparent |
| Wooden block | Opaque |
| Salt | Soluble in Water |
12. If you are asked to design a new type of desk for your school, which is strong, lightweight and durable. Which material would you select and what properties would you prioritize to ensure the desk meets these needs.
Ans: I would select plastic and metal because plastic is lightweight and metal is strong and durable. The desk should be strong enough to hold weight, lightweight for easy movement, and durable to last long.
13. Collect the different substances like sand, salt, lemon juice, shampoo. Mix one by one in a glass of water and observe which material is soluble and which is not. Record your observation in a tumbler form.
Ans:
| Substance | Soluble / Insoluble |
| Sand | Insoluble |
| Salt | Soluble |
| Lemon juice | Soluble |
| Shampoo | Soluble |
14.
Draw the above picture at the right place of balance given below.
Ans:
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