WorksheetsCarbonyl Optical Isomers and Shapes
Total questions: 20
Worksheet time: 3600secs
Which one of the following can exhibit both geometrical and optical isomerism?
(CH3)2C=CHCH(CH3)CH2CH3
CH3CH2CH=CHCH(CH3)CH2CH3
(CH3)2C=C(CH2CH3)2
CH3CH2CH(CH3)CH(CH3)C=CH2
Which compound does not show stereoisomerism?
1,2-dichloropropene
1,2-dichloropropane
1,3-dichloropropene
1,3-dichloropropane
How many structural isomers, which are esters, have the molecular formula C4H8O2?
2
3
4
5
The structural formula of ethyl 2-methylpropanoate is
How many structural isomers, which are aldehydes, have the molecular formula C5H10O?
2
3
4
5
Propanone can be reduced to form an alcohol. A functional group isomer of the alcohol formed is
CH3CH2CH2OH
CH3CH2CHO
CH3OCH2CH3
CH3COCH3
Propanoic acid reacts with methanol in the presence of a small amount of concentrated sulphuric acid. The empirical formula of the ester formed is
CH2O
C2H6O2
C2H4O2
C2H4O
Which one of the following conversions does not represent a reduction?
propene → propane
propanal → propan-l-ol
propanal → propanoic acid
propanone → propane
Which one of the following does not represent an oxidation?
propene → propane
propan-l-ol → propanal
propan-l-ol → propanoic acid
propanal → propanoic acid
CH2O is the empirical formula of
methanol
methyl methanoate
ethane-1,2-diol
butanal
Which one of the following will undergo nucleophilic addition?
hex-3-ene
hexan-3-one
3-bromohexane
hexan-3-ol
Which compound forms a racemic mixture when reacted with KCN followed by dilute acid?
HCHO
CH3CHO
CH3COCH3
(CH3CH2)2CO
Which one of the following is not a correct general formula for the non-cyclic compounds listed?
alcohols CnH2n+2O
aldehydes CnH2n+1O
esters CnH2nO2
primary amines CnH2n+3N
Certain chemical tests were performed on the pain-relief drug ibuprofen. The results of these tests are given in the table. Which one of the following functional groups do these results suggest that ibuprofen contains?
Which alcohol could not be produced by the reduction of an aldehyde or a ketone?
2,2-dimethylpropan-1-ol
2-methylbutan-2-ol
3-methylbutan-2-ol
pentan-3-ol
How many structural isomers with the molecular formula C5H10O react with Tollens’ reagent?
3
4
5
6
Which of these species is not planar?
HCHO
CH3+
CH3OH
C2H4
Which of these species has a trigonal planar structure?
PH3
BCl3
H3O+
CH3−
Which is the most likely bond angle around the oxygen atom in ethanol?
104.5°
109.5°
120°
180°
Which species has one or more bond angle(s) of 90°?
CH4
NH4+
ClF4−
AlCl4−
