What is the correct formula for 1-fluro-3-methyl-2-butene?
A |
Structural |
CH2FCH2C(CH3)CH3 |
B |
Empirical |
C5H9F |
C |
Displayed |
|
D |
Skeletal |
|
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Syllabus Edition
First teaching 2023
First exams 2025
What is the correct formula for 1-fluro-3-methyl-2-butene?
A |
Structural |
CH2FCH2C(CH3)CH3 |
B |
Empirical |
C5H9F |
C |
Displayed |
|
D |
Skeletal |
|
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Which of the following molecules are hydrocarbons?
|
1 |
2 |
3 |
4 |
A |
✓ |
✓ |
⨯ |
⨯ |
B |
✓ |
✓ |
✓ |
✓ |
C |
✓ |
✓ |
✓ |
⨯ |
D |
⨯ |
⨯ |
⨯ |
✓ |
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What is the identity of the functional group that is ringed in the molecule shown below?
Aldehyde
Ketone
Carboxylic acid
Alkene
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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
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Compound A, an organic compound with a molecular formula C6H12O2, is produced by the oxidation of compound B, molecular formula C6H14O.
Which of the following functional groups does B contain?
Carboxyl (-COOH)
Carbonyl (C=O)
Hydroxyl (-OH)
Alkyl (RCOOR’)
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What is the name of the following molecule?
2,3,3-tetramethylpentane
3,3,5-trimethylhexane
2,4,4,4-trimethylethylbutane
2,4,4-trimethylhexane
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Which of the molecules shown below contains an aldehyde functional group?
CH3CH2CH2COCH3
CH3CH2OOCH3
H3CH2OCH2CH2CH2CH3
CHOCH2CHOHCH2CH3
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Xylitol is an artificial sweetener used in toothpastes and chewing gum to improve their taste without impairing dental hygiene.
Which functional groups could be produced if xylitol is oxidised under suitable conditions?
|
Alkene |
Aldehyde |
Carboxylic acid |
Ketone |
A |
✓ |
⨯ |
⨯ |
⨯ |
B |
⨯ |
✓ |
⨯ |
⨯ |
C |
⨯ |
✓ |
⨯ |
✓ |
D |
⨯ |
✓ |
✓ |
✓ |
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Limonene is found in the peel of citrus fruits.
What is the correct empirical and molecular formula of limonene?
Empirical Formula |
Molecular formula |
|
A |
C9H13 |
C9H13 |
B |
C5H9 |
C10H18 |
C |
C10H8 |
C10H16 |
D |
C5H8 |
C10H16 |
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What is the correct structural formula for 2,2-dibromo-4-methylhexane?
CH3CHBrCBr(CH3)CH2CH2CH3
CH3CBr2CH(CH3)CH2CH2CH3
CH3CHBrCH(CH3)CHBrCH2CH3
CH3CBr2CH2CH(CH3)CH2CH3
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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
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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 |
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