2. Which of the following conditions represents an equilibrium (a) Freezing of ice in a open vessel, temperature of ice is constant (b) Few drops of water is present along with air in a balloon, temperature of balloon is constant (c) Water is boiling in an open vessel over stove, temperature of water is constant (d) All the statements (a), (b) and (c) are correct for the equilibrium
Correct option is B) Equilibrium can be achieved only in closed vessel .
