In the refining of silver, the recovery of silver from silver nitrate solution involved "displacement by copper metal. Write down the reaction involved.

Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

What is the difference between displacement and double displacement reactions? Write equations for these reactions.

What do you mean by a precipitation reaction? Explain by giving example.

Explain the following in terms of gain or loss of oxygen with two examples each:

(a) Oxidation (b) Reduction