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Question

A respiratory substrate with formula C51H98O6 is completely oxidised during respiration. What would be the ratio of the volume of CO2 evolved to the volume of O2 consumed in respiration?

A
More than one
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B
Zero of Infinite
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C
Equal to one
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D
Less than one
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Solution

The correct option is C Less than one

The ratio exists between the volume of carbon dioxide released to the volume of the oxygen taken in during the oxidation of organic substance at constant temperature and pressure is called Respiration Quotient. C51H98O6 is the molecular formula of Tripalmitin. During the oxidation of Tripalmitin, 145O2 molecules are utilised and 102CO2 molecules are released. The Respiratory quotient is 0.7 i.e. less than one.

So, the correct option is ‘Less than one’.

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