The reagent used to convert allyl alcohol to acrolein is:

Which of the following compounds is more acidic?

Consider the following alcohols. The order of decreasing reactivities of these alcohols towards substitution with $HBr$ is:
$(I)$ $C_6H_5CH_2OH$
$(II)$ $p-NO_2-C_6H_4CH_2OH$
$(III)$ $p-CH_3O-C_6H_4CH_2OH$
$(IV)$ $p-Br-C_6H_4CH_2OH$

The order of solubility of alkanols in water is

The reaction of allyl alcohol with $MCPBA$ ($meta$-chloroperbenzoic acid) is shown below:
Allyl alcohol $\xrightarrow{MCPBA}$ Product
What is the stereochemistry of the product of the above reaction?

The major product $(P)$ of the given reaction is .... (where,$Me$ is $-CH_3$)