WorksheetsCLASS XII CHEMISTRY (ALCOHOLS, PHENOLS AND ETHERS)
Total questions: 20
Worksheet time: 11mins
What is the functional group of alcohols?
–NH2
–COOH
–CHO
–OH
–NO2
Which group has the following functional group?
hydrocarbon
alchohol
ether
ester
Monochlorination of toluene in sunlight followed by hydrolysis with aq. NaOH yields__________
o-Cresol
p-Cresol
2, 4-Dihydroxytoluene
Benzyl alcohol
The process of converting alkyl halides into alcohols involves_____________
addition reaction
substitution reaction
dehydrohalogenation reaction
rearrangement reaction
Which of the following name reactions produces salicyldehyde?
Kolbe's reaction
Rosenmund reduction
Williamson's synthesis
Reimer Tiemann reaction
Conversion of Salicylic acid to Aspirin is an example of ________
Rearrangement reaction
Esterification reaction
Dehydration reaction
Alkylation reaction
Choose the correct order of acidic strength.
o-nitrophenol < o-cresol < phenol
o-cresol < o-nitrophenol< phenol
o-cresol < phenol < o-nitrophenol
o-nitrophenol< phenolo < cresol
The order of ease of dehydration of primary,secondary and tertiary alcohols is_______________
30 < 20 < 10
20 < 10 < 30
30 > 20 > 10
20 < 30 < 10
Which of the following set of reactants is appropriate for the preparation of t-butyl ethyl ether?
t-butyl chloride and Sodium ethoxide.
Sodium tertiary butoxide and Ethyl chloride
Ethyl chloride and Butyl alcohol
Butyl chloride and Ethyl alcohol
Phenols are more acidic than alcohols because
Phenoxide ion is stablised by resonance
Phenols are more soluble in polar solvents
Phenoxide ion does not exhibit resonance
Alcohols do not lose H atoms at all
Why alcohols have higher boiling point than alkanes?
Alcohols have Van der Waal's forces between the molecules
Alcohols have intermolecular Hydrogern bonding
Alcohols exist as dimers.
Alcohols have intramolecular Hydrogen bonding.
Compound Z is an alcohol. When Z is reacted with conc HCl and ZnCl2, the cloudy solution appear immediately. But when compound Z reacts with acidified KMnO4 , no reaction occurs. What is the compound Z?
Primary alcohol
Secondary alcohol
Tertiary alcohol
Quaternary alcohol
Dehydration of alcohol is an example of
redox reaction
elimination reaction
substitution reaction
addition reaction
Williamson's synthesis gives best results when sodium alkoxide reacts with___________
Primary alkyl halides
Tertiary alkyl halide
Primary alcohol
Tertiary alcohol
Phenol reacts with bromine in CS2 to give
o-bromophenol
m-bromophenol
o-and p-bromophenol
2,4,6-tribromophenol
When phenol is treated with CHCl3 and NaOH the product formed is
benzaldehyde
salicylaldehyde
benzoic acid
salicylic acid
Alkenes convert into alcohols by
(a) hydrolysis by dil. H2SO4
(b) hydration of alkene by alkaline KMnO4
(c) hydrolysis by water vapours and conc. HNO3
(d) hydration of alkene by aqueous KOH
(a) hydrolysis by dil. H2SO4
(b) hydration of alkene by alkaline KMnO4
(c) hydrolysis by water vapours and conc. HNO3
(d) hydration of alkene by aqueous KOH
Which of the following reacts with NaOH to give an alcohol?
(a) Propene
(b) Butene
(c) Ethanal
(d) Methanal
Williamson's synthesis gives best results when sodium alkoxide reacts with___________
Primary alkyl halides
Tertiary alkyl halide
Primary alcohol
Tertiary alcohol
