WorksheetsCarbonyl Compounds
Total questions: 20
Worksheet time: 18mins
When reacted with a strong reducing agent, aldehydes turn into
carboxylic acids
ketones
primary alcohols
secondary alcohols
Name this carbonyl compound according to IUPAC nomenclature:
3-benzyl-3,3-methylbutanone
3,3-dimethyl-4-phenylbutanone
3-methyl-3-phenylbutan-2-one
2-phenyl-3,3-dimethylbutan-2-one
Which of the following alcohols can be oxidised to 2-methyl-3-pentanone?
CH3CH2CH(OH)CH3
CH3CH(OH)CH2CH2CH3
(CH3)3CCH(OH)CH3
(CH3)2CHCH(OH)CH2CH3
Which reagent would you choose to convert 1-pentanol to pentanal?
PCC in CH2Cl2
K2Cr2O7 with aqueous H2SO4
KMnO4 with aqueous H2SO4
KOH, ethanol, reflux
The following reaction scheme shows how propene can be prepared from propanal in two stages using reagents X and Y. Which of the following are the reagents X and Y?
X Y
CH3CH2CHO → CH3CH2CH2OH → H3CH=CH2
X: LiAlH4 ; Y: KOH, ethanol, reflux
X: NaBH4 ; Y: conc.H2SO4, heat
X: dillute H2SO4 ; Y: conc.ethanol, reflux
X: dillute H2SO4 ; Y: KOH, ethanol, reflux
On heating compound X with acidified KMnO4, compound Y is obtained. Compound Y does not react with Fehling’s solution. X and Y are most likely to be,
Compound X Compound Y
CH3COCH3 CH3COOH
CH3CH(OH)CH3 CH3COCH3
CH3CH2CH2OH CH3COCH3
CH3CH2CH2OH CH3CH2CHO
Which substance would test positively with 2,4-DNPH but negatively with Tollens’ reagent?
Propanal
Propanone
Propanoic acid
1-propanol
Acetone reacts with HCN to form a cyanohydrin. It is an example of
Electrophilic addition
Electrophilic substituition
Nucleophilic addition
Nucleophilic substituition
Carbonyl compounds CANNOT be synthesized through
oxidation of primary alcohol
oxidation of secondary alcohol
oxidation of tertiary alcohol
Which of the following is NOT a carbonyl compound?
An organic compound forms a light yellow precipitate when reacted with alkaline excess iodine solution.
State the name of chemical test.
Iodoform test
Baeyer’s test
Tollen’s test
Brady’s test
What is the positive observation for Brady’s test?
brick red precipitate
silver mirror precipitate
light yellow precipitate
yellow or orange precipitate
Arrange the boiling point of the following compounds in increasing order.
Ethane, ethanol, ethanal
Ethane<ethanal<ethanol
Ethanol<ethanal<ethane
Ethanal<ethanol<ethane
Ethane<ethanol<ethanal
Identify the product formed for the reaction of 4-methylcyclohexanone with HCN.
2-butanol heated with acidified KMnO4 solution produced
butanone
butanoic acid
butene
butane
Identify the correct structure for 4-amino-3-benzyl-2,2-dimethylpentanedial
