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Question: By the end of 2002, the public transport of Delhi switched over to a new fuel. Name the fuel. Why is...

By the end of 2002, the public transport of Delhi switched over to a new fuel. Name the fuel. Why is this considered better? Explain.

Explanation

Solution

This fuel has the same calorific value as Methane. There remains very few quantities of toxic substances.

Complete Answer:
- The air pollution is referred to as if air is polluted by undesirable chemicals that have a negative impact on the living and the non-living. Air pollutants are called the chemicals that contaminate the air. These substances can also come from natural causes such as smoke and dust caused by forest fires or volcanic rashes.
- Human actions also introduce toxins to the environment. Factories, power stations, industrial wastes, firewood and dung cakes are sources of air pollution.
- Vehicles contain high levels of toxins such as carbon monoxide, nitrogen oxide, carbon dioxide, and smoke. Incomplete combustion of fuel as petrol and diesel is the result of carbon monoxide. This is a radioactive gas. It decreases the ability of the blood to transport oxygen.
- By the end of 2002, the public transport of Delhi switched over to a new fuel called CNG (Compressed Natural Gas). Delhi is in a ranking of 41 cities the world's fourth most contaminated city. The combustion of fossil fuels, such as petrol and diesel, has contributed to Delhi's air pollution.
- Therefore, it moved to a new fuel-CNG in 2002. It is considered better because CNG is a renewable fuel that creates relatively little unburned particles and is thus viewed as environment friendly. Unlike petrol or diesel, in vehicles, CNG burns more efficiently and very little unburnt remains. In comparison, CNG is cheaper than petrol or diesel, cannot be sifted and adulterated like petrol and diesel by robbers.

Note: The use of diesel and petrol as vehicle fuels is replaced by CNG, since CNG contains very small quantities of toxic substances. CNG is cleaner. A good fuel is those which are available quickly, low price, burn easily at moderate rate, generate a great amount of heat and leave no unnecessary substances behind.