MCQ Detailed View

CNG stands for Compressed Natural Gas, a type of fuel that is widely used as an alternative to petrol and diesel in vehicles. As the name suggests, CNG is made by compressing natural gas, primarily composed of methane (CH₄), to less than 1% of its original volume under high pressure. This makes it easier to store and transport while maintaining its effectiveness as a fuel.

Natural gas is a fossil fuel formed over millions of years from the decomposition of organic matter. It is extracted from underground reservoirs and is primarily made up of methane, along with small amounts of ethane, propane, and other gases. When compressed, it becomes a high-energy fuel that can be stored in specially designed, high-pressure cylinders and used in vehicles and various industrial applications. CNG is considered a cleaner fuel compared to traditional fuels like petrol or diesel. It produces lower emissions of carbon dioxide (CO₂), carbon monoxide (CO), nitrogen oxides (NOₓ), and particulate matter, making it environmentally friendly. Vehicles running on CNG release fewer greenhouse gases, contributing to reduced air pollution and better public health.

The use of CNG has several advantages:

• 
  

  Cost-effective: CNG is often cheaper than petrol and diesel.

  
  


• 
  

  Safe: It is lighter than air and disperses quickly in case of leaks, reducing fire hazards.

  
  


• 
  

  Engine-friendly: CNG burns more cleanly, which can increase the lifespan of an engine.

  
  

However, CNG requires a pressurized storage system and refueling infrastructure, which may not be as widespread as conventional fuels in some areas.

The other options in the question are incorrect:

• 
  

  "Converted," "Conduced," and "Conducted" Natural Gas are not scientifically used terms for this fuel.

  
  

Thus, the correct answer is Compressed Natural Gas (CNG), a modern, eco-friendly energy source that is helping reduce dependence on liquid fossil fuels.