Explanation

Respiratory Quotient (RQ) is the ratio of volume of C$O_{2}$ released to the volume of $O_{2}$ absorbed during respiration. In case of organic acids (eg., oxalic acid), more C$O_{2}$ is released than the $O_{2}$ absorbed. Hence, RQ of organic acids is always more than one. 2(COOH)₂ + $O_{2}$ $\rightarrow$ 4C$O_{2}$ + 2$H_{2}$O + Energy RQ = $\frac{4CO_{2}}{1O_{2}}$ = 4