Question

Natural gas is most commonly extracted by a process called fracking. Once extracted, it's toxic if inhaled, and it is tasteless, colorless, and odorless. What is done to natural gas to increase safety?

A. It is converted to liquid.

B. It has a chemical added to turn it a light grey.

C. It is highly pressurized.

D.It has an odor added.

Answer 1

The answer is D. It has an odor added.

As a safety precaution, chemicals (odorants) are intentionally added when the gas is pumped into the local distribution network of pipelines to give it a distinctive, pungent smell, similar to rotten eggs. The odor signals a potential compressed natural gas (CNG) gas leak.