Question

An element A which is a part of common salt and kept under kerosene reacts with another element B of atomic number 17 to give a product C. When an aqueous solution of product C is electrolysed then a compound D is formed and two gases are liberated.

(a) What are A and B ?

(b) Identify C and D.

(c) What will be the action of C on litmus solution ? Why ?

(d) State whether element B is a solid, liquid or gas at room temperature.

(e) Write formula of the compound formed when element B reacts with an element E having atomic number 5.

Answer 1

(a) A is sodium and B is chlo rine

(b) C is sodium chloride and D is sodium hydroxide

(c) C will have no effect on litmus solution since it is neutral in nature.

(d) B is a gas at room temperature.

(e) EB 3