Which is the greatest air pollution these days? — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Evaluate the major contributors to modern air pollution. While factories, domestic appliances, and agricultural activities release pollutants, vehicular emissions represent the largest source of primary air pollutants globally. Step 2: Exhaust from motor vehicles (printed as "Moto vehicles" in the text) is responsible for the majority of urban carbon monoxide, nitrogen oxides, and hydrocarbons. Step 3: Therefore, the correct option is (b).