Which process occurs at the anode during the process of electrolysis?

State three reasons for the following fact: $(a)$ Magnesium is a metal. One of the reasons must be supported with a chemical equation.

Name two metals in each of the following cases:
$(i)$ Metals that are stored in kerosene.
$(ii)$ Metals that are alloyed with iron to make stainless steel.
$(iii)$ Metals which are highly malleable and ductile.

Which of the following gases is combustible?

Electrical wires have a coating of an insulating material. The material generally used is

Silver articles become black on prolonged exposure to air. This is due to the formation of: