Question

why is the use of diesel and petrol as fuels in automobiles being replaced by compressed natural gas (CNG)in big cities?

Answer 1

This is done so because Diesel and petrol are high polluting fuel which affects the environment and air quality of the city and causes many respiratory diseases that's why they are replaced by CNG as CNG is fully green fuel which don't cause pollution.

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Answer 2

why is the use of diesel and petrol as fuels in automobiles being replaced by compressed natural gas (CNG)in big cities?

Explanation:

Petrol and diesel are two of the most commonly used fossil fuels. The are obtained by fractional distillation of petroleum and are harmful to the environment.

Petrol and diesel vehicles release large amounts of suspended particulate matter, carbon monoxide, sulfur dioxide and other harmful hydrocarbons into the atmosphere.

CNG or compressed natural gas is obtained from natural gas and is being used as a replacement for petrol and diesel in large cities due to the following reasons

- It is cheaper

- It gives more mileage as compared to petrol and diesel

- It releases up to 80% less particulates into the atmosphere

- It keeps the automobile engines cleaner and increases their efficiency

- It releases lesser hydrocarbons into the air