331.

In Williamson's synthesis, ethoxyethane is prepared by :

• passing ethanol over heated alumina

• heating sodium ethoxide with ethyl bromide

• treating ethyl alcohol with excess of H₂SO₄ at 430-440 K

• heating ethanol with dry Ag₂O

The correct order of reactivity of phenyl Magnesium bromide with the following compound is:

• (II)> (III)> (I)

• (I)> (III)> (II)

• (II)> (I)> (III)

• (I)> (II)> (III)

reacts with acetic acid in presence of Hg²⁺ to give:

• 

• 

• 

• None of these

Phenol and benzoic acid are distinguished by

• NaOH

• NaHCO₃

• Na₂CO₃

• H₂SO₄

Phenol reacts with chloroform in presence of

• H₂SO₄

• KOH

• NaNO₂/ HCl

• G.R.

The alcohol that produces turbidity immediately with ZnCL₂ + conc. HCl at room temperature:

• 1- hydroxybutane

• 2- hydroxybutane

• 2- hydroxy -2- methyl propane

• 1- hydroxy -2- methyl propane

The compound which reacts faster with Lucas reagent is

• butan-1-ol

• butan-2-ol

• 2-methyl-propan-1-ol

• 2-methyl propan-2-ol

In the given reaction ,

R-OH + HX $\to$RX + H₂O

the order of reactivity of alcohols is:

• tertiary < secondary < primary

• tertiary > secondary > primary

• tertiary < secondary > primary

• secondary > primary > tertiary

A compound is soluble in conc. H₂SO₄ . It does not decolourise bromine in CCL₄ but in oxidised by chromic anhydride in aqueous H₂SO₄ with 2s , turning orange solution to blue green , afterward opaque. The original solution contains :

• a primary alcohol

• a secondary alcohol

• a tertiary alcohol

• an ether

Which of following is the correct order of increasing reactivity?

• RCOOR' < RCOCl < RCONH₂

• RCOOR' < RCONH₂ < RCOCl

• RCOCl < RCONH₂ < RCOOR'

• RCONH₂ < RCOOR' < RCOCl