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Diwali effect: Noise pollution high, air pollution down in Delhi

Noise pollution in Delhi witnessed an upward trend this Diwali, as compared to six other metros like Bangalore, Chennai, Mumbai and Kolkata.

Diwali effect: Noise polluion high, air pollution down in Delhi

Noise pollution in Delhi witnessed an upward trend this Diwali, as compared to six other metros like Bangalore, Chennai, Mumbai and Kolkata.