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प्रश्न
Magnet attracts iron needle.This is ______ change.
विकल्प
a reversible
an irreversible
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उत्तर
Magnet attracts iron needle. This is a reversible change.
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संबंधित प्रश्न
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Choose the odd one out. Give reason for your choice.
Inflating a balloon, popping a balloon, fading of wall paint, burning of kerosene
Water changes into ice on cooling is an example of ______.
Can we reverse the following change? If yes, suggest the name of the method.
Ice into water
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
Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.
Give one example of change which occurs on mixing two substances, but cannot be reversed.
Conversion of ice into water and water into ice is an example of change which can be reversed. Give four more examples where you can say that the changes can be reversed.
Circle the odd one out. Give a reason for your choice.
Choose the odd one out. Give reason for your choice.
