Sainik School Entrance Exam 2020 Solved Paper

(d) butane gas is present in LPG in major proportion. LPG is composed hydrocarbons containing three or four carbon atoms. The normal components of LPG are propane $\left(\mathrm{C}3\mathrm{H}8\right)$ and butane $\left(\mathrm{C}4\mathrm{H}10\right)$. Small concentrations of other hydrocarbons may also be present.