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प्रश्न
Look at the figure which shows three situations.
Which of these shows a reversible change and why?
विकल्प
A burning candle
An extinguished candle
Melting wax
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उत्तर
Melting wax
Explanation:
Melted wax can be changed into its solid or viscous state on cooling. Therefore, it is a reversible change.
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संबंधित प्रश्न
Short Answer Type Question:
What is a physical change? Explain with example.
Long Answer Type Question:
Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.
Burning of match stick is a reversible change.
Periodical removal of one of the products of a reversible reaction increases the yield.
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Change is the ______ of a substance from one form to another.
Most of the physical changes are ______.
The burning of the paper is an irreversible change.
Can we reverse the following change? If yes, suggest the name of the method.
Ice into water
Choose the odd one out. Give a reason for your choice.
