Read the below statements marked as Assertion (A) and Reason. (R). Mark the correct options:
Assertion (A): Delhi frequently records the hightst AQI levels amon India cities.
Reason (R): It lies in a low-lying basin surrounded by the Himalays.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. A is true, but R is false.
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Assertion (A) is true: Delhi consistently records high Air Quality Index (AQI) levels, especially in winter, due to vehicle emissions, construction dust, and stubble burning in neighboring states.
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Reason (R) is false: Delhi is not in a 'low-lying basin surrounded by the Himalayas.' It is located in the Indo-Gangetic Plain. While the Himalayas are to its north, they act as a barrier that traps cold, heavy air and pollutants over the city during winter (thermal inversion), rather than surrounding it like a basin.