Question

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In which of the following substances will be there be :
a) increase in mass
b) decrease in mass
c) no change in mass when they are exposed to air.


1. sodium chloride
2. iron
3.concentrated sulphuric acid 4.table salt
5.sodium carbonate crystals​​

Answer 1

Explanation:

a-5

b-2

c-3

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Answer 2

Answer:

a- 5

B- 2

C- 3

Explanation:

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