Which one of the following statements is incorrect about chemical equilibrium?

Chemical equilibrium is attained whether we start with reactants or products

Chemical equilibrium is dynamic in nature

Chemical equilibrium, ${\mathrm{CaCO}}_3\left(\mathrm{s}\right)\rightleftharpoons \mathrm{CaO}\left(\mathrm{s}\right)+{{\mathrm{O}}_2}_{\left(\mathrm{g}\right)}$ is attained, when ${\mathrm{CaCO}}_3\left(\mathrm{s}\right)$ is heated in an open vessel

At equilibrium, the concentration of each of the reactants and products becomes constant