Alcohols, Phenols and Ethers

Two aromatic compounds having formula C₇H₈O which are easily identifiable by FeCl₃ solution test (violet colouration) are

• o-cresol and benzyl alcohol

• m-cresol and p-cresol

• o-cresol and p-cresol

• methyl phenyl ether and benzyl alcohol

Which one of the following methods is used to prepare Me₃COEt with a good yield?

• Mixing EtONa with Me₃CCl

• Mixing Me₃CONa with EtCl

• Heating a mixture of (1:1) EtOH and Me₃COH in the presence of conc. H₂SO₄

• Treatment of Me₃COH with EtMgI

The ease of dehydrohalogenation of alkyl halide with alcoholic KOH is

• 3° < 2° < 1° 

• 3° > 2° > 1° 

• 3° < 2° > 1° 

• 3° > 2° < 1° 

The correct order of decreasing acidity of nitrophenols will be

• m-nitrophenol > p-nitrophenol > o-nitrophenol

• o-nitrophenol > m-nitrophenol > p-nitrophenol

• p-nitrophenol > m-nitrophenol > o-nitrophenol

• p-nitrophenol > o-nitrophenol > m-nitrophenol

Which one of the following properties is exhibited by phenol?

• It is soluble in aq. NaOH and evolves CO₂ with aq. NaHCO₃,

• It is soluble in aq. NaOH and does not evolve CO₂ with aq. NaHCO₃

• It is not soluble in aq. NaOH but evolves CO₂ with aq. NaHCO₃

• It is insoluble in aq. NaOH and does not evolve CO₂ with aq. NaHCO₃

Which one of the following is s-butyl phenyl vinyl methane?

Identify (D) in the following reaction series:

${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2\stackrel{\mathrm{conc} {\mathrm{H}}_2{\mathrm{SO}}_4}{\to } \mathrm{A} \underset{∆}{\overset{{\mathrm{H}}_2\mathrm{O}}{\to }} \mathrm{B} \stackrel{{\mathrm{PCl}}_5}{\to } \mathrm{C} \stackrel{ \mathrm{Alcoholic} \mathrm{KOH} }{\to } \mathrm{D}$

• ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{OH}$

• ${\mathrm{CH}}_3-\left(\mathrm{OH}\right)\mathrm{CH}-{\mathrm{CH}}_3$

• ${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2$

• CH₃CH₂CH₂OH

Phenol is bifunctional compound because

• It is acidic and contain -OH

• It reacts with Na to give phenoxide

• It reacts with both Na and Zn to give phenoxide and benzene respectively

• Both (a) and (c)

Which of the following has lowest boiling point?

• p -nitrophenol

• m -nitrophenol

• o-nitrophenol

• Phenol

One mole of an organic compound A with the formula C₃H₈O reacts completely with two moles of HI to form X and Y. When Y is boiled with aqueous alkali, it forms Z . Z answers the iodoform test. The compound A is

• propan -2- ol

• propan - 1- ol

• ethoxyethane

• methoxyethane