Question

Explain the importance of decomposition reaction in metal industries

Answer 1

Explanation:

1.Thermal decomposition is used for the production of calcium oxide (quick lime ) from calcium carbonate which is a major constituent of cement.

2. Rancidity can be prevented by adding antioxidants to food containing fat and oil, e.g. butylated hydroxy anisole is added to butter as antioxidant.

3. It can be prevented by packaging fat and oil containing foods in nitrogen gas.

4. Molten NaCl is electrolytically decomposed to form sodium metal.

5. Aluminium metal is obtained by electric decomposition of bauxite ore mixed with cryolite.