R.Q. of malic acid is

0.7

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1.33

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Solution

The correct option is C 1.33
The ratio of the volume of carbon dioxide evolved to that of oxygen consumed by an organism, tissue, or cell in a given time. Generally organic acids have their R.Q. value greater than 1. Oxidation of malic acid is as follows-
$C_{4} H_{6} O_{5} + 3 O_{2} \to 4 C O_{2} + 3 H_{2} O$
R.Q. = 4 $C O_{2}$ / 3 $O_{2}$ = 1.33.
So, the correct answer is option C.

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