$\mathrm{Assertion} :-$ Benzyl phenylether forms phenol and benzyl iodide with $\mathrm{HI}$

$\mathrm{Reason} :-$ Because benzyl carbocations is more stable than phenyl.carbocation.

Assertion (A): The product of reaction of $2-$Methyl cyclo hexanol with $\mathrm{HBr}$ at room temperature is $1-$Bromo$-1-$methyl cyclo hexane.

Reason (R): Generally dehydration occur and product is $1-$methyl cyclo hexene.

Which of the following is most soluble in water?

Phenol $\frac{{\text{ NaNO }}_2}{\text{ conc. }{\mathrm{H}}_2{\mathrm{SO}}_4}$ Green colour $\stackrel{{\mathrm{H}}_2\mathrm{O}}{⟶}$ red colour $\stackrel{\mathrm{NaOH}}{⟶}$Blue colour

This reaction is associated with the name of :

What is the order of acidic strength of given molecules?

(I)	(II)	(III)	(IV)