Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to: [2019]

(A)benign growth on mucous lining of nasal cavity.
(B)inflammation of bronchi and bronchioles.
(C)proliferation of fibrous tissues and damage of the alveolar walls.
(D)reduction in the secretion of surfactants by pneumocytes.

The NCERT line that answers it

Verbatim line

**Asthma** is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles.

Chapter: Breathing and Exchange of Gases
Section: 14.6 DISORDERS OF RESPIRATORY SYSTEM
Page: 9
Words matched: 15 of 15

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 'Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles,' which directly matches the correct answer B and distinguishes it from the other options by specifying the exact cause of wheezing in respiratory disorders.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

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Question text is reproduced from the published NEET 2019 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.