Question

X	Y
Liquid sodium metal	Breathing apparatus submarine
Potassium	Explosive
Potassium nitrate	Coolant in nuclear reaction
Potassium superoxide	Soft soap

Match the compounds/metal in(X) with their used in (Y). hence correct order is.

• A. A-I, B-III, C-II, D-IV
• B. A-III, B-IV, C-II, D-I
• C. A-II, B-I, C-III, D-IV
• D. A-IV, B-II, C-III, D-I

Answer 1

The correct option is B A-III, B-IV, C-II, D-I

Liquid sodium is used as coolants.
Potassium stearate is used as a surface active agent and fiber softener.
Major uses of potassium nitrate are in fertilizers, rocket propellants and fireworks.
potassium superoxide is used as an oxygen source in chemical oxygen generators, such as those used on the space shuttle and on submarines.