WorksheetsCarbonyl compounds
Total questions: 15
Worksheet time: 7mins
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
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
What is the reagent to differentiate between a benzaldehyde and a ketone
Acidified potassium dichromate (VI) solution
Tollen’s reagent, [Ag(NH3)2]+
Fehling’s solution containing complex ions of Cu2+
When aldehyde is heated with Fehling's solution, it gives a precipitate of
Cu2O
CuO
Cu2O & CuO
Cu
Which of the following compound can be oxidised to give a ketone?
Propan-1-ol
2-methylpropan-2-ol
Propan-3-ol
Propan-2-ol
1. Iodoform test: Yellow precipitate
2. Tollens' test: No observable change
3. 2,4-DNPH: yellow precipitate
Which compound will have the above observations?
CH3CH2CHO
C6H5CHO
CH3CH2COCH3
CH3COOH
When reacted with a strong oxidising agent, aldehydes turn into
carboxylic acids
ketones
primary alcohols
secondary alcohols
Carbonyl compounds CANNOT be synthesized through
oxidation of primary alcohol
oxidation of secondary alcohol
oxidation of tertiary alcohol
