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प्रश्न
Can we reverse the following change? If yes, suggest the name of the method.
Water into water vapour
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उत्तर
Yes, by condensation water vapour can be converted to water.
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संबंधित प्रश्न
Chemical reactions are example for
Circle the odd one.
Choose the odd one out. Give reason for your choice.
Inflating a balloon, popping a balloon, fading of wall paint, burning of kerosene
When a candle is lit the following changes are observed.
- Wax melts.
- Candle keeps burning.
- The size of the candle decreases.
- The molten wax solidifies
- Which of the changes can be reversed? Justify your answer
Differentiate reversible and irreversible reactions.
What are reversible changes?
Salt can be separated from its solution (salt dissolved in water), because ______.
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.
Circle the odd one out. Give a reason for your choice.
Choose the odd one out. Give reason for your choice.
