During the dehydration of alcohols to alkenes by heating with conc. $H_2SO_4$,the initiation step is:

$A$ compound $X$ with molecular formula $C_3H_8O$ can be oxidized to a compound $Y$ with the molecular formula $C_3H_6O_2$. $X$ is most likely to be

Which is the best method to prepare cycloalkene from cyclohexanol?

Order of boiling points of the given compounds is:
$(a)$ $\text{pentan-1-ol}$
$(b)$ $\text{butan-1-ol}$
$(c)$ $\text{butan-2-ol}$
$(d)$ $\text{propan-1-ol}$

Write the mechanism of acid dehydration of ethanol to yield ethene.

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A:$ Butan$-1-$ol has higher boiling point than ethoxyethane.
Reason $R:$ Extensive hydrogen bonding leads to stronger association of molecules.
In the light of the above statements,choose the correct answer from the options given below: