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Metal X is Zinc

The sulphide ore is first heated strongly in supply of oxygen and changed into its oxide. This process

is called roasting.

heat

2ZnS + 3O2 2ZnO + 2SO2

Zinc oxide is then reduced to zinc metal by heating it with carbon. This process is called reduction.

2ZnO + C 2Zn + CO2

• (i) As it reacts with both acids as well as bases to form salts.

• (ii) Iron being more reactive than copper displaces copper from copper sulphate to form green ferrous sulphate solution.
• (iii) Nitric acid is a strong oxidising agent. Hydrogen gas produced gets oxidised toH2O.

• (iv) Calcium is a very reactive metal. It reacts with the chemicals in surroundings and occurs in combined state.

• (v) Sodium and potassium are highly reactive metals and react vigorously with oxygen in air and may even catch fire. They do not react with kerosene.

Answer:

Metal X is Zinc

• The sulphide ore is first heated strongly in supply of oxygen and changed into its oxide. This process is called roasting.

• Zinc oxide is then reduced to zinc metal by heating it with carbon. This process is called reduction.

• 2ZnO + C → 2Zn + CO2

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