NEET 2015 · Class 11

Breathing and Exchange of Gases

Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls. (2015)

  1. (A)Pneumonia
  2. (B)Asthma
  3. (C)Pleurisy
  4. (D)Emphysema

The NCERT line that answers it

Verbatim line

**Emphysema** is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased.

Chapter
Breathing and Exchange of Gases
Section
14.6 DISORDERS OF RESPIRATORY SYSTEM
Page
9
Words matched
18 of 18

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that emphysema involves damage to alveolar walls leading to decreased respiratory surface area, which directly matches the question's description of reduced alveolar surface area for gas exchange.

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Question text is reproduced from the published NEET 2015 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.