Which Fuel Causes Least Pollution?

Why CNG is not used for cooking?

Earlier, LPG was considered as the clean fuel, but nowadays CNG is regarded as the clean fuel and has replaced diesel and petrol automobiles.

But due to the volatility nature, narrow range of flammability and high auto-ignition temperature (540o C) CNG is not used as the cooking gas..

Which one is more polluting fuel?

Coal produces more pollution than any other energy source. While coal produces just 44% of U.S. electricity, it accounts for 80% of power plant carbon emissions. Burning coal leads to soot, smog, acid rain, global warming, and carbon emissions.

Who causes the most pollution?

Top 5 most polluting countriesChina (30%) The world’s most populated country has an enormous export market, which has seen its industry grow to become a serious danger to the planet. … United States (15%) The world’s biggest industrial and commercial power. … India (7%) … Russia (5%) … Japan (4%)

Which fuel is the cleanest?

natural gasWhen natural gas is burned, it produces mostly carbon dioxide and water vapor — the same substances emitted when humans exhale. Compared with some other fossil fuels, natural gas emits the least amount of carbon dioxide into the air when combusted — making natural gas the cleanest burning fossil fuel of all.

Which is safer CNG or LPG?

Calorific Values of LPG and CNG: LPG has high calorific value of 90 to 95 MJ/m3 compared to CNG which has calorific value of as low as 35 to 40 MJ/m3. Thus, LPG is more efficient fuel than biogas, petrol, diesel, kerosene and CNG. … Compared to gasoline-powered vehicle, CNG powered vehicles are safer and more efficient.

What is the most environmentally harmful fossil fuel?

CoalCoal is known for being a dirty fuel, not just because of its high carbon content compared with other fossil fuels but also because it contains a large amount of toxic heavy metals and other chemicals.

Does LPG burn cleaner than petrol?

LPG is a cleaner burning fuel than either diesel or petrol, so engine life is actually extended and LPG does not damage engines. … Using LPG is better for car engines, as it reduces carbon build up during the internal combustion process. It produces less carbon overall when compared to either diesel or petrol.

Which is better LPG or CNG?

CNG releases less greenhouse gas, while LPG releases carbon dioxide, but is still cleaner than gasoline. In the case of a spill, CNG quickly dissipates, whereas LPG will settle on the ground. In general, CNG is considered safer than LPG, since LPG is difficult to disperse.

Which is the least polluting fuel?

Answer: (a) Fossil fuels are Natural Gas, Coal and Petroleum. (b) Process of separation of different constituents from petroleum is called refining. (c) Least polluting fuel for vehicle is CNG.

Which fuel is less polluting and why?

Answer: the fuels like CNG, LPG, biofuels are the fuels which are less polluting. Explanation: these fuels are less polluting because carbon content is lesser due to which the threat of increase of carbon in the is reduced and the stress of increase of global warming is also reduced.

Why is CNG preferred over LPG?

Answer. CNG preferred over lpg because it produce greenhouse gases upon combustion, it is a more environmentally clean alternative to other fossil fuels like gasoline or LPG.

Is petrol cleaner than diesel?

Overall, diesel cars emit less hydrocarbons, carbon monoxide and lead pollution than petrol cars, but produce more noxious gases and significantly more particulates. Despite much debate over which car, petrol or diesel, is cleaner, weighing up the advantages and disadvantages is not easy.