214-- How many of the following statements are correct? $(H = 1,\ C = 12,\ Br = 80\ ;\ \text{g.mol}^{-1})$
Natural gas is the building material of petrochemical industries.
0.25 mol of each alkene, with 40 grams of bromine, undergoes a complete reaction.
In alkene molecules, each carbon atom has bonds to three other atoms.
The molar mass of the second member of the alkane family is 0.75 times the molar mass of the second member of the alkyne family.
1) 1 2) 2 3) 3 4) 4
\textbf{214--} How many of the following statements are correct? $(H = 1,\ C = 12,\ Br = 80\ ;\ \text{g.mol}^{-1})$
\begin{itemize}
\item Natural gas is the building material of petrochemical industries.
\item 0.25 mol of each alkene, with 40 grams of bromine, undergoes a complete reaction.
\item In alkene molecules, each carbon atom has bonds to three other atoms.
\item The molar mass of the second member of the alkane family is 0.75 times the molar mass of the second member of the alkyne family.
\end{itemize}
\hspace{2cm} 1) 1 \hspace{2cm} 2) 2 \hspace{2cm} 3) 3 \hspace{2cm} 4) 4