Question

Match the columns:
Column I
1. Glowing of an electric bulb
2. Growth of nails and hair
3. Earthquakes and Tsunami
4. Change of water into ice
5. Burning of waste papers
Column II
(a) Reversible change
(b) Undesirable change
(c) Chemical change
(d) Physical change
(e) Slow change​

Answer 1

Answer:

O

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Explanation:

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Answer 2

Answer:

1. c

2. a

3. b

4. d

5. e

Explanation:

1. electric bulb undergoes chemical reactions

3. no one want earthquakes and tsunami as it causes lots of destruction

4. water can be converted into ice and ice can be converted into water only physical state changes

5. Burning of waste paper is also a chemical change as we can not get the original paper back