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Byju's Answer
Standard IX
Chemistry
Physical and Chemical changes
The process o...
Question

The process of melting of ice-cream is considered as:


A

Physical change

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B

Irreversible change

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C

Chemical change

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D

Both physical and chemical change

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Solution

The correct option is A

Physical change


Melting of ice cream is a physical change. Liquid ice-cream solidifies again on freezing without change in chemical properties.


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Q.

Four students have their own opinion about reversible and irreversible changes. Who among the following is correct?

Rohan: Both physical and chemical changes are reversible.

Sam: Both physical and chemical changes are irreversible.

Tom: Physical changes are irreversible and chemical changes are reversible.

Riah: Chemical changes are irreversible and physical changes are reversible


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. Melting of wax and heating of blade are the examples of
(a) physical change
(b) chemical change
(c) periodic change
(d) irreversible change
Q.

Give reason:

(a)Freezing of water to ice and evaporation of water are physical changes.

(b)Burning of a candle is both a physical and a chemical change.

(c)Burning of paper is a chemical change.

(d)Cutting of a cloth piece is a physical change, though it cannot be reversed.

Q. Q. With reference to physical and chemical change consider the following statements:Which of the above given statements is/are correct?

  1. 1 and 2 only

  2. 1 and 3 only

  3. 3 only

  4. 1,2 and 3
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