Who among the following invented a device called PM 2.5 which when fitted near the silencer pipe in vehicles will curb air pollution?

Debayan Saha

The correct answer is Option (1) - Debayan Saha

Debayan Saha invented a device called PM 2.5, designed to reduce air pollution emitted by vehicles. When fitted near the silencer pipe, it captures and filters particulate matter, helping to improve air quality and mitigate health risks associated with pollution.