Question

Which of the following hydrocarbons are present in LPG?
A. Methane
B. Hydrogen
C. Acetylene
D. Butane

Answer 1

Hint:We know that LPG stands for liquefied petroleum gas, used as a fuel in the household known as LPG cylinders. LPG is composed of highly flammable carbon compounds in the gaseous form. Identify the main carbon compound among the given options. It is made up of four carbon atoms.

Complete step-by-step answer:Now, we will know about the LPG, i.e. Liquefied petroleum gas.
As mentioned it consists of the highly flammable carbon compounds, or we can say the hydrocarbons. So let us look at the given options.
The first option we have is methane. If we talk about the properties of methane; it is non-toxic but highly flammable. It means it forms explosive compounds by reacting with the air.
The second option we have is hydrogen. As we know that hydrogen gas is also flammable, and explosive in nature.
The third option we have is acetylene. It is also considered as extremely flammable gas. So, we can say that in the presence of air, or oxygen it forms an explosive atmosphere.
Talking about the fourth option we have is butane. It is also a flammable compound but it is easily converted into the liquid or gaseous state under the standard temperature, and pressure.
Now, the above mentioned are hydrocarbons, and flammable too. But if we see the first three options, they are extremely flammable compounds.
Thus, in the last we can conclude that LPG mainly consists of butane.

Hence, the correct option is (D).

Note: Don’t get confused in between the options. Just look at their properties. As mentioned we get to know that the compounds are highly flammable except butane, so we considered the presence of butane in LPG.