NEET 2016 Biology question

Name the chronic respiratory disorder caused mainly by cigarette smoking:

(1)EmphysemaCorrect
(2)Asthma
(3)Respiratory acidosis
(4)Respiratory alkalosis

Answer: (1)

Solution

Emphysema is a chronic disorder in which the alveolar walls are damaged, reducing the respiratory surface area; cigarette smoking is a major cause (NCERT, Breathing and Exchange of Gases). Hence option (1). Asthma

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Question ID VK-091933