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प्रश्न
While lighting a candle, Paheli observed the following changes.
- Wax was melting
- Candle was burning
- Size of the candle was reducing
- Melted wax was getting solidified.
Of the above, the changes that can be reversed are
विकल्प
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i) and (iv)
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उत्तर
(i) and (iv)
Explanation:
Solid wax can be melted and melted wax gets solidifies again. Hence melting of wax and its solidification are reversible changes.
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संबंधित प्रश्न
A stretched rubber band comes back to normal shape. It is an example for ________.
Match the following.
| Bud to flower | Dr. A.P.J. Abdul Kalam |
| Reversible change | Recyclable waste |
| India 2020 | Organic waste |
| Paper | Melting of ice |
| Vegetables | Irreversible change |
Differentiate reversible and irreversible reactions.
Give examples to explain the difference between changes that can or cannot be reversed.
Water changes into ice on cooling is an example of ______.
Evaporation of water is a reversible change.
What are reversible changes?
Differences between
reversible and irreversible changes are:
Pick the change that can be reversed from the following.
Choose the odd one out. Give a reason for your choice.
