Q. Assertion :- In severe cases of Pneumonia; the lips and finger nails may turn gray to bluish in colour.
Reason :- In Pneumonia the alveoli get filled with fluid leading to severe problems in respiration.

 1960  216 Human Health and Disease Report Error

Solution:

Correct answer is (a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion