Question

Consider the following statements.
$1$. LPG is a mixture of Propane, Propylene, Butane and Butylene.
$2$. Bio-CNG, a kind of biogas, has a $95\%$ weightage of Methane in its chemical composition.
$3$. The density of Methane is less than air.
Which of the given statement(s) is/are correct?

• A. $1$ and $2$
• B. $1,2$ and $3$
• C. $2$ and $3$
• D. $1$ and $3$

Answer 1

Answer: (B)

LPG consists of propane and butane. Propylene, butylenes and various other hydrocarbons are usually also present in small concentrations. Bio CNG is the purified form of Biogas where all the unwanted gases are removed to produce >95% pure methane gas.

Methane, at ambient temperature is lighter than air. It is a colourless odourless gas that occurs abundantly in nature and as a product of certain human activities.