Question

please solve this question​

Answer 1

1.Cao+CO2

2.ZnO+CO2

3.PbO+NO2+O2

4.FeSO4

5.Fe2O3+SO2+SO3

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Answer 2

a) When calcium carbonate is heated then it breaks into calcium oxide and carbon dioxide.

b) Zinc carbonate on heating decomposes to zinc oxide and carbon dioxide gas.

c)when the leas nitrate is heated up then it decomposes to lead nitrogen oxide, lead mono oxide and the oxygen.

d) Ferrous sulfate crystals are green in color. It is present in hydrated form and when it is heated, the hydrated ferrous sulfate forms anhydrous ferrous sulfate which is white in color.

e) Ferrous sulfate crystals are green in color. On strong heating, the products obtained are ferric oxide, sulfur dioxide and sulfur trioxide