Question

what is the formation of P.O.P

Answer 1

P.O.P or Plaster of Paris is formed by heating gypsum to about 150 °C
Plaster of Paris is CaSO4·0.5H2O.

The chemical reaction involved is:
CaSO4·2H2O + heat → CaSO4·0.5H2O + 1.5H2O

Answer 2

Explanation:

Pop contains carbonic acid, which forms when CO2 is dissolved in water. In every can (or bottle) of pop, carbonic acid and gaseous CO2 exist in chemical equilibrium. When you open a can of pop, gaseous CO2 escapes. You see bubbles and hear the sound of fizz.