Which of the following is odorless, tasteless and non-toxic, and is made up of 93.05% methane, nitrogen, carbon dioxide, propane and traces of ethane?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. CNG.
The substance described is Compressed Natural Gas (CNG). CNG is primarily composed of methane (about 93.05%), along with smaller amounts of nitrogen, carbon dioxide, propane, and traces of ethane. It is odorless, tasteless, and non-toxic in its pure form. To detect leaks, an odorant like mercaptan is usually added. CNG is commonly used as a clean fuel alternative for vehicles and in various industrial applications due to its lower environmental impact compared to other fossil fuels.