Class 6 Science Chapter 6 Changes Around Us Ncert Solutions are provided here. NCERT Intext and End Exercise questions of Class 6 Science Chapter 6 Changes Around Us
Class 6 Science Chapter 6 : Changes Around Us
Changes Around Us is the sixth chapter of NCERT Text book of Class 6 Science. The end exercise and intext questions are comprised of the topics – changes around us, cold milk to hot milk, batter to idli , cow dung to biogas, etc.
Chapter 06 : Changes Around Us ( Ncert Solutions)
| Subject | Science |
| Class | 6th – ( Class VI ) |
| Chapter | Chapter 6 : Changes Around Us |
| Study Material | NCERT intext and End Exercise Solutions |
| Total Questions | 7 Questions |
| Text Book | NCERT Text Book |
NCERT Solutions Class 6 Science Chapter 6 : Changes Around Us
Ques. 1 : To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Ans. Yes this can be reversed. It can be reversed by unfolding the dress.
Ques. 2 : You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed?
Ans. No, this change can not be reversed. The toy is now broken into pieces and can’t be reversed to original.
Ques. 3 : Some changes are listed in the following table. For each change, write in the blank column, whether the change can be reversed or not
| Change | Can be Reversed ( Yes/No) |
|---|---|
| The sawing of 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.
| Change | Can be Reversed ( Yes/No) |
|---|---|
| The sawing of piece of wood | No |
| The melting of ice candy | Yes |
| Dissolving sugar in water | Yes |
| The cooking of food | No |
| The ripening of a mango | No |
| Souring of milk | No |
Ques. 4 : A drawing sheet changes when you draw a picture on it. Can you reverse this change?
Ans. No , we cannot reverse this change. If the picture is made using colours or pen, then it is irreversible.
If the picture is drawn with help of a pencil, then we can erase it with eraser and draw fresh picture.
Ques. 5 : Give examples to explain the difference between changes that can or cannot be reversed.
Ans.
| Reversible Change | Irreversible Change |
|---|---|
| Making Ice from Water | Making curd from milk |
| Filling a balloon with air. | Bursting of an air filled balloon. |
| Folding of Paper | Burning of Paper |
| Glowing of Electric bulb | Burning of a candle. |
Ques. 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 immobilised. Can the change in POP be reversed?
Ans. No, the change in POP cannot be reversed.
Ques. 7 : A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?
Ans. No, the change which have occurred in the cement cannot be reversed.
