Which of the following produces the least amount of soot particles during combustion?

Correct option is D

Compressed Natural Gas (CNG) produces the least amount of soot particles during combustion. CNG is a cleaner fuel compared to petrol, kerosene, and diesel, as it primarily contains methane (CH₄), which burns more completely and produces fewer particulate emissions, including soot.
Information booster:
· CNG is known for its cleaner combustion, resulting in fewer pollutants like nitrogen oxides (NOx), carbon monoxide (CO), and particulate matter (PM).
· Diesel produces the highest amount of soot particles due to incomplete combustion and the complex hydrocarbons present in diesel fuel.
· Petrol and kerosene also produce soot, but in smaller quantities compared to diesel. However, they still emit more particulates than CNG.
Additional Knowledge:
1. Soot particles, or particulate matter (PM), are harmful pollutants that can contribute to respiratory issues and environmental pollution.
2. CNG is widely used as an alternative fuel in public transport because of its cleaner combustion properties, leading to less air pollution.