Which of the following is odourless, tasteless and non-toxic, and is made up of 93.05% methane, nitrogen, carbon dioxide, propane and traces of ethane?

CNG

The correct answer is option 3. CNG.

The gas that is odorless, tasteless, non-toxic, and primarily composed of methane, nitrogen, carbon dioxide, propane, and traces of ethane is CNG (Compressed Natural Gas).

CNG is a natural gas mainly composed of methane (CH₄) along with other gases like nitrogen (N₂), carbon dioxide (CO₂), propane (C₃H₈), and traces of ethane. It is commonly used as a fuel for vehicles and is known for being clean-burning and environmentally friendly.