1.

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»

(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



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