A) zero
B) one
C) less than one
D) more than one
Correct Answer: D
Solution :
When an organic acid is oxidised the value of R.Q. in respiration becomes more than one. Because organic acids are rich in\[{{O}_{2}}\]and require less\[{{O}_{2}}\]for their oxidation. It is clear from the equation given below. \[\underset{(Malic\text{ }acid)}{\mathop{{{C}_{4}}{{H}_{2}}{{O}_{5}}}}\,+3{{O}_{2}}\xrightarrow[{}]{{}}4C{{O}_{2}}+3{{H}_{2}}O\] \[\therefore \] \[R.Q.=\frac{Vol.\,of\,C{{O}_{2}}\,evolved}{Vol.of\,{{O}_{2}}\,taken}=\frac{4}{3}\] R.Q. = 1.3 (more than one)
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