Are Ethene- Ethylene
Propene-proplylene
and,Butene-Butylene the same

Q. Fill the blanks in the given table using suitable formulae.

No.	Alkane	Alkene	Alkyne
1.	$C_2{H}_6$ ethane	______ ethene	$C_2{H}_2$ ethyne
2.	________ Propane	$C_3{H}_6$ Propene	________ Propyne
3.	$C_4{H}_{10}$ Butane	__________ Butene	_________ Butyne

Q. 2-methyl propene, cis-2-butene, trans-2-butene

Q. 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?

Q. How many of the following five alkenes: propene, butene, pentene, hexene, and heptene are liquid at room temperature?

Q. At $353K$, the vapour pressure of pure ethylene bromide and propylene bromide are $22.93$ and $16.93kN{M}^{-2}$, respectively, and these compounds form a nearly ideal solution. $3mol$ of ethylene bromide and $2mol$ of propylene bromide are equilibrated at $553K$ and a total pressure of $20.4kN{M}^{-2}$.
(a)what is the composition of the liquid phase?
(b)what amount of each compound is present in the vapour phase?