What is liquefaction and give an example of one?

Liquefaction. ... As an example of the latter, a "major commercial application of liquefaction is the liquefaction of air to allow separation of the constituents, such as oxygen, nitrogen, and the noble gases." Another is the conversion of solid coal into a liquid form usable as a substitute for liquid fuels.

Answerdistinguish between the mercalli scale and the richter scale;

Answer light in color; silica-rich;