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प्रश्न
Fill in the blank
A change in which the substance can be brought back to its original state is called a _______ change.
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उत्तर
A change in which the substance can be brought back to its original state is called a reversible change.
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संबंधित प्रश्न
TRUE \ FALSE
Evaporation of water is a physical change. True or false ?
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\[\ce{Ag->Ag+}\]
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The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Calcium hydroxide.
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(b) Rising of hot air over a radiator.
(c) Burning of kerosene in a lantern.
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Reason (R): Physical changes are always reversible.
