Providing a basic environment is one of the conditions for producing ethanol from ethene.
The feasibility of the alkene reaction with bromine liquid and the formation of saturated carbon molecules depends on the number of carbon molecules of the alkene.
If the boiling point of crude oil is known, one can comment on the physical state of white oil.
In fractional distillation of crude oil, with increasing altitude, the trend of temperature changes and the size of exiting molecules are opposite to each other.
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\textbf{87 --} Which statement is correct?
\begin{enumerate}
\item Providing a basic environment is one of the conditions for producing ethanol from ethene.
\item The feasibility of the alkene reaction with bromine liquid and the formation of saturated carbon molecules depends on the number of carbon molecules of the alkene.
\item If the boiling point of crude oil is known, one can comment on the physical state of white oil.
\item In fractional distillation of crude oil, with increasing altitude, the trend of temperature changes and the size of exiting molecules are opposite to each other.
\end{enumerate}
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