What is respiratory quotient (RQ) ? Why RQ in anaerobic respiration is infinite?

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Solution

The ratio of the volume of CO $_{2}$ given out to the volume of O $_{2}$ consumed in respiration is called respiratory quotient. In anaerobic respiration, R.Q is infinite because CO $_{2}$ is evolved without taking O $_{2}$ .
R.Q. = Vol. of CO $_{2}$ / Vol. of O $_{2}$ = 2/0 = infinity.

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