An unknown ether, upon treatment with HI, produces a single alkyl iodide. This alkyl iodide, when reacted with sodium in dry ether, forms n-hexane. Identify the original ether.

${\rm{HBr}}$ reacts with${\rm{C}}{{\rm{H}}_2}$=${\rm{CH}}$—${\rm{OC}}{{\rm{H}}_3}$ under anhydrous conditions at room temperature to give:

The products obtained when benzyl phenyl ether is heated with HI in the mole ratio 1:1 are

I. Phenol

II. Benzyl alcohol

III. Benzyl iodide

IV. Iodobenzene

On boiling with conc. hydrobromic acid, phenylethylether will yield:

Arrange the following ethers in decreasing order of their reactivity towards cleavage with HI:

(i) $CH_3OCH_3$

(ii) $CH_3OCH_2CH_3$

(iii) $(CH_3)_2CHOCH(CH_3)_2$

(iv) $CH_3OC(CH_3)_3$

An example of a compound with functional group —${\rm{O}}$— is:

Which of the following reagents is used in the Williamson ether synthesis?

Which of the following compounds is resistant to nucleophilic attack by hydroxyl ions?

The reaction of ${\rm{C}}{{\rm{H}}_3}{\rm{O}}{{\rm{C}}_2}{{\rm{H}}_5}$ with ${\rm{HI}}$ gives:

Ether on reacting with ${{\rm{P}}_2}{{\rm{S}}_5}$ form

In Williamson’s synthesis