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प्रश्न
Salt can be separated from its solution (salt dissolved in water), because ______.
पर्याय
mixing of salt in water is a change that can be reversed by heating and melting of salt.
mixing of salt in water is a change that cannot be reversed.
mixing of salt in water is a permanent change.
mixing of salt in water is a change that can be reversed by evaporation.
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उत्तर
Salt can be separated from its solution (salt dissolved in water), because mixing of salt in water is a change that can be reversed by evaporation.
Explanation:
Salt can be separated from water solution by evaporating the water. Hence, mixing of salt in water is a reversible change.
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संबंधित प्रश्न
Very Short Answer Type Question:
Some common changes are given in the below Table. Which of these changes do you think can be reversed?
| Change | Can be reversed |
| (i) Raw egg to boiled egg | Yes/No |
| (ii) Batter to idli | |
| (iii) Wet clothes to dirty clothes | |
| (iv) Woollen yarn to knitted sweater | |
| (v) Grain to its flour | |
| (vi) Cold milk to hot milk | |
| (vii) straight string to a cold string | |
| (viii) Bud to flower | |
| (ix) Milk to paneer | |
| (x) Cow dung to biogas | |
| (xi) stretched rubber band to its normal size | |
| (xii) Melting of ice-cream |
Long Answer Type Question:
Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.
Circle the odd one.
Differentiate reversible and irreversible changes.
Formation of curd from milk is
Most of the physical changes are ______.
Name the two types of changes.
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
An iron ring is heated. Which of the following statement about it is incorrect?
Rolling of chapati and baking of chapati are the changes that ______.
