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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
MCQ
In breathing movements, air volume can be estimated by:
  • A
    Stethoscope.
  • B
    Hygrometer.
  • C
    Sphygmomanometer.
  • D
    Spirometer.
✓

Answer

  1. Spirometer.

Explanation:

Spirometry is the process of recording the changes in the volume and movement of air in and out of the lungs and the instrument used for this purpose is called spirometer or respirometer, which measures the volume of air inhaled and exhaled by lungs.

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