Assertion :RQ value for fats is less than one. Reason: The amount of CO $_{2}$ released is less than O $_{2}$ consumed when fats are used in respiration.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
RQ value for fats is less than one due the amount of $C O_{2}$ released is less than $O_{2}$ because the structure of fat does not have oxygen content in it and R.Q. is the value of carbon dioxide released and oxygen consumed in respiration.
$2 (C_{51} H_{98} 0_{6})$ + $1450_{2}$ → $102 C 0_{2}$ + $98 H_{2} 0$
RQ = 102C02/14502 = 0.7
So the correct option is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.'

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Assertion :RQ value for fats is less than one. Reason: The amount of CO2 released is less than O2 consumed when fats are used in respiration.

Assertion :RQ value for fats is less than one. Reason: The amount of CO $_{2}$ released is less than O $_{2}$ consumed when fats are used in respiration.