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प्रश्न
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
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उत्तर
Yes. The length of the dress can again be increased by unfolding it. Hence, this change can be reversed.
संबंधित प्रश्न
Very Short Answer Type Question:
Give two examples of irreversible changes.
Very Short Answer Type Question:
Can you say deforestation is an irreversible or reversible change?
Drying of wet clothes in air is an example of
Choose the odd one out. Give reason for your choice.
Inflating a balloon, popping a balloon, fading of wall paint, burning of kerosene
Differences between
reversible and irreversible changes are:
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
Can we reverse the following change? If yes, suggest the name of the method.
Water into water vapour
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.
Choose the odd one out. Give a reason for your choice.
Circle the odd one out. Give a reason for your choice.
