Lead pipes are corroded quickly by

Explain the effect of an increase in the number of carbon atoms and branching on the boiling points of alcohols and phenols.

$CH_3 CH_2 OH \underset{\text{step-}1}{\stackrel{Cl_2}{\longrightarrow}} CH_3 CHO$ $\underset{\text{step-}2}{\stackrel{3 Cl_2}{\longrightarrow}} Cl_3 CCHO$
In the above reactions,the role of $Cl_2$ in step-$1$ and step-$2$ respectively is:

Which of the following compounds is most reactive toward acid-catalyzed hydration?

The reagent used for the conversion of allyl alcohol into propenal is

Propene is the product obtained by the dehydrogenation of