Question

Multiple choice questions
A. Choose the correct option.
1. Which of the following is a reversible
change?
a) milk turning sour b) burning of wax
c) melting of wax d) cooking a vegetable

2. Which of the following is a physical change?
a) burning of paper b) rusting
c) burning of wax d) freezing

3. Which of the following is a physical
irreversible change?
a) burning of a matchstick
b) melting of an ice cream/
c) breaking of a flower vase
d) lighting up of an electric bulb

4. which of the following is a chemical change
a) shredding of paper
b) burning of paper
c ) breaking of a water bottle d ) grinding charcoal into a power

5. Which of these is not a characteristic of
chemical changes?
a) no change in molecules
b) mostly irreversible
c) large amount of energy required
d) formation of new substances

6. A change in which a new substance is
formed is known as a change that is
a) reversible
c) chemical
b) irreversible
d) physical

7. the burning of a candle is the change which can be categorised as ---------
a ) reversible
b ) Irreversible
c ) physical
d ) both physical and chemical

8. cutting your hair is a an ------------ change .
a) reversible
b ) Irreversible
c ) physical
d ) chemical ​

Answer 1

Answer:

1-c

2-b

4-c

5-b

6b

7-d

8-a

Explanation:

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