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Question
An example for reversible change is
Options
melting of ice
burst of balloon
burning paper
change of milk into curd
MCQ
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Solution
Melting of ice
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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 |
Circle the odd one.
Differentiate reversible and irreversible changes.
Formation of curd from milk is
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
What are reversible changes?
What are irreversible changes?
When ‘Touch me not’ plant is touched by us, ______ changes occur.
Which of the following change cannot be reversed?
Paheli mixed flour and water and
- made a dough,
- rolled the dough to make a chapati,
- baked the chapati on a pan,
- dried the chapati and ground it in a grinder to make powder.
Identify the changes (i) to (iv) as the changes that can be reversed or that cannot be reversed.
