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Chemical Change

Categorise th...

Question

Categorise these changes as reversible or irreversible.
a. Melting of an ice candy
b. Cooking of food
c. Souring of milk

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Solution

a. Melting of an ice candy - Reversible
b. Cooking of food - Irreversible
c. Souring of milk - Irreversible

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Similar questions

Q. Write True (T) or False (F) against the following statements in the given brackets:
1. Digestion of food is a Q irreversible change. ( )
2. Rusting of iron is a reversible change. ( )
3. Melting of wax is a reversible change. ( )
4. Curding of milk is an irreversible change. ( )
5. Melting of ice cream is a reversible change. ( )

Q. Some changes are listed in the following table. For each change, write in the blank column, whether the change can be reversed or not.

\begin{matrix} S.No. & Change & Can be reversed (Yes/No) 1. & The sawing of a piece of wood 2. & The melting of ice candy 3. & Dissolving sugar in water 4. & The cooking of food 5. & The ripening of a mango 6. & Souring of milk \end{matrix}

Q. Fill in the blanks with the correct words.
1. Melting of ice-cream is an example of a/an .................... (reversible/irreversible) change.
2. Ripening of fruits is an example of a/an .................... (reversible/irreversible) change.
3. Cooking of foood is an example of a/an .................... (reversible/irreversible) change.
4. Breaking of glass is a .................... (physical/chemical) change.
5. .................... (Heating/Cooling) causes steam to change into water.

Q. Identify the following as reversible or irreversible changes, with reasons:
i) mixing iron filings and sand
ii) shattering of glass
iii) melting of ice

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