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प्रश्न
An iron ring is heated. Which of the following statement about it is incorrect?
विकल्प
The ring expands.
The ring almost comes to the same size on cooling.
The change in this case is reversed.
The ring changes its shape and the change cannot be reversed.
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उत्तर
The ring changes its shape and the change cannot be reversed.
Explanation:
The ring expands on heating and comes back to its original size on cooling. The change is reversible.
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संबंधित प्रश्न
An example for reversible change is
Chemical reactions are example for
Circle the odd one.
Circle the odd one.
Analogy
Dissolution of glucose : reversible change :: Digestion of food: ___________ change
Differentiate reversible and irreversible reactions.
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Give one example of change occurs on mixing two substances, but can be reversed.
Give one example of change which occurs on mixing two substances, but cannot be reversed.
Choose the odd one out. Give a reason for your choice.
