Question

What type of fuel is suitable to avoid pollution?

• A. Firewood
• B. Coal
• C. Gas
• D. Cow dung Cake

Hint:

Cleanest to dirtiest fuels: Gas>Liquid fuels>Solid fuels. Gaseous fuels produce the least pollution due to complete combustion. For environmental protection, promote the use of clean fuels like LPG, natural gas, and renewable energy sources.

Answer 1

The Correct Option is C

When evaluating which type of fuel is suitable for minimizing pollution, it is important to consider the emissions and environmental impact of each option. Below is a step-by-step explanation of why Gas is the preferred choice compared to other fuels:

1. Firewood: Burning firewood releases a significant amount of smoke and particulate matter into the air, contributing to air pollution and respiratory problems. It produces carbon monoxide (CO) and volatile organic compounds (VOCs) which are harmful pollutants.
2. Coal: Coal combustion releases high levels of carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter, contributing to air pollution and the greenhouse effect. Coal is considered one of the dirtiest forms of energy.
3. Gas: Natural gas is a much cleaner fuel as it burns more efficiently and emits significantly lower levels of CO2, nitrogen oxides, and almost no sulfur dioxide. It primarily consists of methane and combusts more completely than solid fuels, reducing the production of pollutants.
4. Cow dung Cake: Like firewood, burning cow dung emits smoke and contributes to indoor and outdoor air pollution. It also releases methane when decomposing under anaerobic conditions.

From the above analysis, Gas stands out as the most environmentally friendly option for fuel due to its clean-burning characteristics and lower pollutant emissions. Therefore, in the context of avoiding pollution, gas is the suitable choice.