दिवाली के बाद धुंध के घेरे में राजधानी दिल्ली

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New Delhi, Nov 02 (ANI): A thick blanket of smog engulfed the national capital after Diwali, leading to poor visibility conditions across the city. Smog, a combination of smoke and fog, forms with the fall in temperature and rising pollution levels. It comes at a time when Delhi is battling the tag of world’s most polluted city.