Geography
Assertion (A): Winter smog is a frequent phenomenon in Delhi.
Reason (R): Delhi and its surrounding areas are industrially very much developed which comprises many chemical factories.
- Both A and R are true and B is the correct explanation of A.
- Both A and R are true and B is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Pollution Sources
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Answer
Both A and R are true and R is the correct explanation of A.
Explanation — Industries release a wide range of pollutants in the air such as ammonia, hydrocarbons, sulphur oxides and dust. These pollutants mix with fog during winters, forming smog.
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Reason (R): Brick kilns mostly use coal to burn the bricks.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.