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Q99 (NDA-I/2026) Science & Technology › Basic Science (Physics, Chemistry, Biology)

Which one of the following respiratory volumes of human lung is the lowest?

Result
Your answer: —  Â·  Correct: B

Explanation

The respiratory volumes in a healthy adult human are categorized as follows:

  • Tidal Volume (TV): This is the volume of air inspired or expired during a normal, relaxed respiration. It is approximately 500 mL.
  • Inspiratory Reserve Volume (IRV): The additional volume of air a person can inspire by a forcible inspiration, averaging 2500 mL to 3000 mL.
  • Expiratory Reserve Volume (ERV): The additional volume of air a person can expire by a forcible expiration, averaging 1000 mL to 1100 mL.
  • Residual Volume (RV): The volume of air remaining in the lungs even after a forcible expiration, averaging 1100 mL to 1200 mL.

Comparing these standard physiological values, Tidal Volume is clearly the lowest respiratory volume among the options provided.

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