NCERT Solutions Class 6 Science Chapter 6 – Free PDF Download
NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us are prepared by subject experts at INFINITY LEARN. These NCERT Solutions have answers to a variety of questions, which will help you gain knowledge on the types of questions that can be asked on the topic. This Chapter sheds light on reversible and irreversible changes around us, along with the change that may occur by heating a substance or by mixing it with some other. The Chapter has some real-life examples and demonstrations, which will make your study interesting and easy.
This NCERT Solutions Class 6 Science not only supports you in your exam preparation but also aids in clearing all your doubts, which is essential from the standpoint of your future studies. The solutions are provided here in PDF format for easy access and download. NCERT Solutions is one of the best ways to strengthen one’s skills and knowledge. It contains all the relevant study material that can help the students score well in the examinations.
1. To walk through a water logged area, you usually shorten the length of your dress by folding it. Can this change be reversed ?
Ans : Yes, this change can be reversed by unfolding.
2. You accidentally dropped your favorite toy and broke it. This is a change you did not want, Can this change be reversed ?
Ans : No, this change cannot be reversed.
3. Some changes are listed in the following table. For each change write in blank column. Whether the change can be reversed or not.
| S.No. | Change | Can be reversed (Yes / No) |
| 1.
2. 3. 4. 5. 6. |
The sawing off piece of wood
The melting of ice candy Dissolving sugar in water The cooking of food The ripening of a mango Souring of milk |
[ ]
[ ] [ ] [ ] [ ] [ ] |
Ans : 1) No 2) Yes 3) Yes 4) No 5) No 6) No
4. A drawing sheet changes when you draw a picture on it. Can you reverse this change ?
Ans : If a picture is drawn with a pencil, then it can be erased; hence change can be reversed.
But if the picture is drawn with colours, the change cannot be reversed.
5. Give example to explain the difference between changes that can or can not be reversed.
Ans : 1) A change that can be reversed is called a reversible change.
Eg : i) Blowing of a balloon.
ii) Making aeroplane from a piece of paper by folding it.
iii) Making ball from a dough.
2) A change that cannot be reversed is called irreversible change.
Eg : i) Ripening of fruits
ii) Burning of paper
iii) Cooking of food
6. A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilized. Can the change in POP be reversed.
Ans : No, the change cannot be reversed, because on drying it forms a dead burnt pop.
7. A bag of cement lying in the open, gets wet due to rain during the night. The next day the sunshine’s brightly. Do you think the change, which have occurred in the cement, could be reversed?
Ans : No, the change cannot be reversed, because cement gets set hard when mixed with water.
Important topics covered in NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us
- Can all changes always be reversed?
- Could there be other ways to bring a change?
- Some common changes
- Evaporation
- Expansion
- Contraction
- Melting
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Frequently Asked Questions on NCERT Solutions for Class 6 Science Chapter 6
- Give examples to explain the difference between changes that can or cannot be reversed in the Chapter 6 of NCERT Solutions for Class 6 Science?
- What does Chapter 6 of NCERT Solutions for Class 6 Science convey?
- List the topics/subtopics covered in the Chapter 6 of NCERT Solutions for Class 6 Science.
1. Give examples to explain the difference between changes that can or cannot be reversed in the Chapter 6 of NCERT Solutions for Class 6 Science?
Changes that can be reversed
i) Opening and closing the door
ii) Filling glass with water
Changes that cannot be reversed
i) Conversion of milk into curd
ii) Ripening of fruit
2. What does Chapter 6 of NCERT Solutions for Class 6 Science convey?
This Chapter sheds light on reversible and irreversible changes around us, along with the change that may occur by heating a substance or by mixing it with some other. This Chapter has some real-life examples and demonstrations, which will make your study interesting and easy.
3. List the topics/subtopics covered in the Chapter 6 of NCERT Solutions for Class 6 Science.
The topics/subtopics covered in the Chapter 6 of NCERT Solutions for Class 6 Science are –
Can all changes always be reversed?
Could there be other ways to bring a change?
Some common changes
Evaporation
Expansion
Contraction
Melting
