CNG and Its Environmental Impact

The video discusses how CNG (Compressed Natural Gas) is reducing pollution in cities. CNG is a cheap, readily available, and highly combustible gas with a high calorific value, making it suitable for use in automobiles. It is a clean fuel that does not produce harmful gases or residues when burned, thus minimizing pollution. As a result, CNG is increasingly replacing fossil fuels in vehicles.

How has the use of CNG in vehicles affected pollution levels in urban areas?

• Reduced pollution to a minimum

• Increased pollution slightly

• Increased pollution significantly

• Had no effect on pollution

What is one of the main reasons CNG is used in automobiles?

• It has a high calorific value

• It is expensive

• It is not readily available

• It is difficult to combust

Which of the following is a characteristic of CNG?

• It is highly combustible

• It produces harmful gases

• It is not a clean fuel

• It leaves a lot of residue when burnt

Why is CNG considered a clean fuel?

• It produces a lot of smoke

• It leaves no residue when burnt

• It is not combustible

• It is expensive

What is a major reason for the shift from fossil fuels to CNG?

• CNG is more polluting

• CNG is harder to find

• CNG is less efficient

• CNG is replacing fossil fuels due to its environmental benefits