Question

DAY-IV
1. Choose the correct option:
a) Melting of ice is a
i) chemical change
ii) physical change
b) Burning of paper is a
change
0) physical change
ii) chemical change
2. What are the characteristics of chemical changes?
3. Differentiate between physical and chemical changes
4. What are desirable and undesirable changes?
DAY-V
1. Essential condition for rusting of iron:
a) oxygen
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2. How can we prevent the rusting of iron?
3. What is Galvanization?
4. Why iron articles are galvanized?
5. Write some methods to prevent rusting,
DAY - VI​

Answer 1

Answer:

1.a)physical change

b)chemical change

2.