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Breathing And Exchange Of Gases

Question
CBSEENBI11025804
Wired Faculty App

When the organic acid is oxidised in respiration, the value of R.Q. becomes

  • zero

  • one

  • less than one

  • more than one

Solution

D.

more than one

When an organic acid is oxidised the value of R.Q. in respiration becomes more than one. Because organic acids are rich in O2 and require less O2 for their oxidation. It is clear from the equation given below.

C4H6O5 (Malic acid) + 3O2 →4CO2 + 3H2O

∴R.Q. = Volume of CO2 evolvedVolume of O2 taken = 43

R.Q = 1.3 (more than one)

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