For reversible reaction, `A + B hArr C + D`, the graph for rate of reaction with time is given below.
Mark the terms (p),(q) and (r )

Options

A. (p)-rate of backward reaction ,(q)-rate of forward reaction, (r )-equilibrium,
B. (p)-rate of forward reaction, (q)-rate of backward reaction, (r )-equilibrium
C. (p)-concentration of products (q)-concentration of reactants (r )-rate of reaction
D. (p)-instantaneous rate of reaction, (q)-variation of rate, (r )-average rate of reaction

Answer

B

Explanation

Rate of forward reaction decreases and rate of backward reaction increases with passage of time. At equilibrium both the rates become equal.