11 mark
What is the name of the following compound?
1,2-dichloro-1,2-dimethylpropane
2,3-dichloro-2,3-dimethylpropane
2,3-dichloro-2-methylbutane
2,3-dichloro-3-methylbutane
Did this page help you?
4.1 Basic Concepts
21 mark
The skeletal formulae of four alcohols, E, F, G and H, are shown below.
Which pair of alcohols are structural isomers of each other?
E and F
E and G
E and H
F and G
Did this page help you?
31 mark
What is the correct formula for 1-fluoro-3-methylbut-2-ene?
| A | Structural | CH2FCH2C(CH3)CH3 |
| B | Displayed |  |
| C | Empirical | C5H9F |
| D | Skeletal |  |
Did this page help you?
41 mark
What is the correct meaning of the term structural isomer?
A compound that contains a different molecular formula and the atoms are arranged differently in space
A compound that contains the same structural formula but the atoms are arranged differently in space
A compound with the same empirical formula but different structural formula
A compound with the same molecular formula but different structural formula
Did this page help you?
51 mark
Which of the hydrocarbons shown below does not belong in the same homologous series as the other compounds?
C8H18
C9H18
C14H30
C11H24
Did this page help you?
61 mark
What is the identity of the functional group that is ringed in the molecule shown below?
Aldehyde
Ketone
Carboxylic acid
Alkene
Did this page help you?
71 mark
What is the IUPAC name of the following molecule?
2-chloro-3-methylpentane
3-methyl-4-chloropentane
2-ethyl-3-chlorobutane
2-chloro-3-ethylbutane
Did this page help you?
81 mark
When propan-1-ol is heated under reflux in the presence of concentrated sulfuric acid, propene is formed.
What type of reaction is this?
Neutralisation
Addition
Substitution
Elimination
Did this page help you?
91 mark
Which of the reactions shows homolytic fission?
H3C+ + Cl– → H3C–Cl
H3C–Br → H3C+ + Br–
H3C–CH3 → H3C• + •CH3
Cl• + •CH3 → H3C–Cl
Did this page help you?
101 mark
How many structural isomers have the molecular formula C6H14?
3
4
5
6
Did this page help you?
11 mark
What is the correct IUPAC name for the following molecule?
4-ethyl-1,2,3-trimethylpent-2-ene
3,4,5-trimethylhept-4-ene
5-ethyl-3,4-dimethylhex-3-ene
3,4,5-trimethylhept-3-ene
Did this page help you?
21 mark
Which row is correct?
|
|
IUPAC name |
General formula |
Skeletal formula |
Structural formula |
|
A |
2-methylpropanal |
CnH2n+1O |
|
CH3CH(CH3)CHO |
|
B |
4-methylpentylamine |
CnH2n+1NH2 |
|
CH3CH2CH2CH(CH3)CH2NH2 |
|
C |
4-methylhexan-2-one |
CnH2nO |
|
CH3CH2CH(CH3)CH2COCH3 |
|
D |
ethyl propanoate |
CnH2nO2 |
|
CH3COOCH2CH2CH3 |
Did this page help you?
31 mark
How many isomers are there of C5H13N which are primary amines?
7
8
9
10
Did this page help you?
41 mark
Which pair of molecules show structural isomerism?
E-but-2-ene and Z-but-2-ene
Propanone and propan-2-ol
2-methyl-3-ethylbutane and 2,3-dimethylpentane
Butanoic acid and methyl propanoate
Did this page help you?
51 mark
Which equation is correct?
Did this page help you?
11 mark
What is the systematic name of the compound below?
1-carbonyl-2-methylpropan-3-ol
3-hydroxy-2-methylpropanal
2-methoxypropan-1-ol
2-methyl-3-hydroxypropanone
Did this page help you?
21 mark
The skeletal formula of an organic compound is shown below.
What is the molecular formula of the organic compound?
C7H12O2
C7H13O2
C7H14O2
C7H15O2
Did this page help you?
3
1 mark
1 markPropanone is the simplest compound in the homologous series of ketones.
What is the general formula for the homologous series of ketones?
C3H6O
CnH2n-1O
CnH2nO
CnH2n+1O
Did this page help you?
41 mark
How can the molecule below be described?
Aromatic and alicyclic
Aliphatic and saturated
Alicyclic and saturated
Alicyclic and unsaturated
Did this page help you?
51 mark
Which compound(s) is a / are structural isomer(s) of C6H12O?
- Cyclohexanol
- Hexan-3-one
- 2,3-dimethylbut-3-en-2-ol
1, 2 and 3
Only 1 and 2
Only 2 and 3
Only 1
Did this page help you?
61 mark
How many alcohols have the formula C4H9OH?
2
3
4
5
Did this page help you?
71 mark
Which statement(s) is / are correct for the organic compound below?
| IUPAC name is pent-3-ene | The empirical formula is CH2 | It is an isomer of cyclopentane | |
| A | ✓ | ✓ | ✓ |
| B | ✓ | ✓ | X |
| C | ✓ | X | ✓ |
| D | X | ✓ | ✓ |
Did this page help you?
81 mark
Which statement(s) is / are correct about bond fission?
- Each bonding atom receives one electron from the bonding pair in heterolytic fission
- Radicals are formed during homolytic fission
- Heterolytic fission forms anions and cations
1, 2 and 3
Only 1 and 2
Only 2 and 3
Only 1
Did this page help you?
91 mark
Which diagram shows the heterolytic fission of the C-Cl bond to form a carbocation and Cl–?
Did this page help you?
101 mark
Which statement(s) is / are correct about the members of a homologous series?
- All members have the same general formula
- The members have similar chemical properties
- The members show a gradual change in physical properties
1, 2 and 3
Only 1 and 2
Only 2 and 3
Only 1
Did this page help you?