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WorksheetsCARBONYL COMPOUNDS
Total questions: 20
Worksheet time: 11mins
Name this carbonyl compound according to IUPAC nomenclature:
3-benzyl-3-methylbutanone
3-methyl-3-phenylbutanone
3-phenyl-3,3-dimethylpropanone
1-phenyl-3,3-dimethylpropanone
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
What is the reagent to differentiate between a benzaldehyde and a ketone
Lucas reagent, conc. HCl, ZnCl2
Tollens' reagent, [Ag(NH3)2]+, OH-
Brady's reagent, 2,4-DNPH
Bromine test, Br2, CH2Cl2
Which of the following is not a carbonyl compound?
What is the structural formula when cyclopentanone reacts with KCN, HCl
Which structural formula is of 2,4-DNPH, a reagent to confirm the presence of carbonyl group.
A
B
C
D
Molecular formula of P is
(CH3)2C(OH)CH2CH3
CH3CH(OH)CH(CH3)2
H2C(OH)CH2CH(CH3)2
CH3CH(OH)CH2CH2CH3
Product Q formed is
Structural formula for product R is
CH3CH(OH)CH(CH3)CH2CN
CH3CH(OH)C(CH3)2CN
CH2(CN)CH(OH)CH(CH3)2
CH3C(OH)(CN)CH(CH3)2
The product S are
CHI3 + CH3CH2COO-
CHI3 + CH3COO-
CHI3 + (CH3)2CHCOO-
CH3I + (CH3)2CHCOO-
What is the observation made when 3-methylbutanone reacted with Tollens' test
pale yellow does not formed
yellow precipitate does not formed
silver mirror does not formed
cloudiness or two layer does not formed
What is the observation made when 3-methylbutanone is reacted with KMnO4, H+ and heated.
purple colour of KMnO4 decolourised
purple colour of KMnO4 remained unchange
Orange colour turn green
Orange colour remains unchanged
The structure of product V is
CH3CH(OH)CH(CH3)2
H2C(OH)CH2CH(CH3)2
CH3CH2C(OH)(CH3)2
CH3CH2CH(CH3)CH2OH
Name the type of reaction for the formation of V
halogenation
nucleophilic substitution
electrophilic aromatic substitution
reduction
What is the type of reaction for the formation of 3-methylbutanone from P
oxidation
reduction
hydrolysis
hydrogenation
Carbonyl compounds that give pale yellow precipitate with iodoform test must have contains..
methyl carbinol group
methyl carbonyl group
carboxyl group
carboalkoxy group
