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Question
Formation of curd from milk is
Options
a reversible change
a fast change
an irreversible change
an undesirable change
Solution
An irreversible change
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RELATED QUESTIONS
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 |
An example for reversible change is
Drying of wet clothes in air is an example of
Magnet attracts iron needle.This is ______ change.
Water on ______ changes to ice and on ______ comes back to water.
What are irreversible changes?
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
Paheli had bought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?
Choose the odd one out. Give a reason for your choice.
Circle the odd one out. Give a reason for your choice.
