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Question
Circle the odd one.
Options
Melting
Freezing
Boiling
Cooking
MCQ
Solution
Cooking
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Long Answer Type Question:
Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.
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 |
Circle the odd one.
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Changes which cannot be reversed are called ______.
Evaporation of water is a reversible change.
The blackening of the Silver anklet is a (an) ______.
Look at Figure which shows three situations.
Which of these shows a reversible change and why?
Which of the following changes cannot be reversed?
- Blowing of a balloon
- Folding paper to make a toy aeroplane
- Rolling a ball of dough to make roti
- Baking cake in an oven
- Drying a wet cloth
- Making biogas from cow dung
- Burning of a candle
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.
