Respiratory Quotient of Carbohydrates — NEET Biology
📚 Practice ConceptWhen carbohydrates are used as substrate and are completely oxidised, the RQ will be 1, because equal amounts of CO2 and O2 are evolved and consumed, respectively, as shown in the equation below:
Assertion (A): The respiratory quotient varies depending on the type of substrate used. Reason (R): When carbohydrates are completely oxidized, the RQ is 1 because equal amounts of CO2 and O2 are evolved and consumed respectively.
View solution & NCERT explanation
Correct answer: A — If both assertion and reason are true and the reason is the correct explanation of the assertion.
NCERT confirms RQ varies with substrate type (Assertion true). NCERT states “When carbohydrates are used as substrate and are completely oxidised, the RQ will be 1, because equal amounts of CO2 and O2 are evolved and consumed, respectively.” The Reason explains WHY RQ varies - carbohydrates give RQ=1 due to equal gas exchange, while other substrates give different values (true and explanatory).
What does NCERT say about When carbohydrates are used?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.