Two very important fuel gases are made from petroleum during the refining process. They are butane and propane, which are similar to methane. These gases are sold in small tanks and are used for cigarette lighters, portable welding torches, and camping stoves. Mixture of the two gases are stored under pressured as a liquid. For this reason the mixture is called liquefied petroleum gas or LPG. As it is used the liquid in the tank evaporates and leaved the tank as gas. The main use of LPG is asa cooking fuel on farms and in small towns are where a central gas making plant would not be practical. Instead of piping the gas to the house where it is to be used, a tank of LPG is connected directly to the stove. Because LPG is sold in tanks, it isoften called tank gas or bottled gas. LPG is also used to small extent to run automobiles and tractors. When the fuel tank is empty, itis replaced by a full one.
What are similar to methane?
A. petroleum
B. butane
C. propane and petroleum
D. petroleum and butane
E. butane and propane
Jawabannya Adalah : E
