Breathing and Exchange of Gases

11 solved questions from Class 11 Biology, each with the full working. Tap any question to see the step-by-step solution.

• 1 What is the primary topic or theoretical principle explored in 'Breathing and Exchange of Gases' (Class 11 BIOLOGY)? medium MCQ Chapter Core Principle
• 2 Which key mechanism or analytical rule is highlighted in 'Breathing and Exchange of Gases'? medium MCQ Key Analytical Mechanism
• 3 What is the primary topic or principle explained in 'Breathing and Exchange of Gases' (Class 11 Biology)? medium MCQ Chapter Core Concept
• 4 Which key observation or fact is central to understanding 'Breathing and Exchange of Gases'? medium MCQ Key Fact & Mechanism
• 5 Why is the study of 'Breathing and Exchange of Gases' important for students of Class 11? medium MCQ Learning Significance
• 6 What is a common application or real-world example related to 'Breathing and Exchange of Gases'? medium MCQ Real World Application
• 7 What key takeaway should students retain after completing 'Breathing and Exchange of Gases'? medium MCQ Chapter Summary & Takeaway
• 8 Which of the following best describes the shape of the oxygen‑hemoglobin dissociation curve? easy MCQ 1 mark Oxygen‑hemoglobin affinity
• 9 Which of the following best describes the shape of the oxygen‑hemoglobin dissociation curve? easy MCQ 2 marks Shape of O2‑Hb curve
• 10 An adult weighing 70 kg has a tidal volume of 0.5 L, a dead space volume of 0.1 L and breathes at 12 breaths per minute. Calculate the alveolar ventilation per minute. medium 3 marks Alveolar ventilation calculation
• 11 A person in a closed room at sea level has an alveolar pCO_2 of 35 mmHg. If the atmospheric pressure is 760 mmHg, water vapor pressure in alveoli is 47 mmHg, FIO_2 is 0.21, and the respiratory exchange ratio R is 0.8, calculate the alveolar oxygen partial pressure P_AO2 using the alveolar gas equation. hard 3 marks Alveolar gas equation