If a system is at equilibrium,the rate of the forward reaction compared to the reverse reaction is:

Explain liquid-vapour equilibrium.

In the reversible reaction,a catalyst is the substance which:

Write the general characteristics of equilibria involving physical processes.

For the reaction ${H_{2(g)} + I_{2(g)} \rightleftharpoons 2HI_{(g)}}$,the equilibrium constant $K_p$ changes with the change in:

Assertion : The equilibrium constant is fixed and a characteristic for any given chemical reaction at a specified temperature.
Reason : The composition of the final equilibrium mixture at a particular temperature depends upon the starting amount of reactants.