Multiple Choice Questions (MCQ) topic quiz
4.2 Alcohols, haloalkanes and analysis
Instructions and answers for teachers
These instructions cover the learner activity section which can be found on page 8. This
Lesson Element supports OCR AS and A Level Chemistry A.
When distributing the activity section to the learners either as a printed copy or as a
Word file you will need to remove the teacher instructions section.
The Activity
This Lesson Element is a teaching and learning resource containing 10 multiple choice
questions (MCQs) on the theme of alcohols, haloalkanes and analysis. Some questions
might require synoptic thinking, using knowledge and ideas from various topics across the
full A Level content.
This resource can be used to test and consolidate understanding at the end of a topic or to
revisit and refresh knowledge at a later point in the course.
Learning Outcomes
This lesson element relates to the specification learning outcomes 4.2.1(a), 4.2.1(c),
4.2.2(d), 4.2.2(e), 4.2.3(b), 4.2.3(c), 4.2.4(b), 4.2.4(c), 4.2.4(f), 4.2.4(h).
Introduction
Multiple choice questions allow rapid coverage of a wide range of sub-topics.
Contrary to a widespread belief among students, multiple choice questions are not
necessarily easy – they can be easy, moderate or difficult.
The questions are written so that the incorrect answers are plausible distractors based on
common errors or misconceptions.
The questions in this quiz cover topics mainly from specification sections:
4.2 Alcohols, haloalkanes and analysis.
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Multiple Choice Questions (MCQ) topic quiz - answers
1.
Which of the below are true for butan-2-ol compared to butane?
A
More volatile
More soluble
Is a primary alcohol
They are not clear on how 1o and 2o alcohols differ.
B
More volatile
Less soluble
Is a secondary alcohol
They are not clear on the effects of H bonds in a molecule, or have not read the
question carefully
C
Less volatile
More soluble
Is a secondary alcohol
Correct answer. H bonds make it less volatile and more soluble.
D
Less volatile
Less soluble
Is a tertiary alcohol
They are not clear on how 2o and 3o alcohols differ.
Your answer
2.
C
Which is the correct equation to show the oxidation of propan-1-ol using K2Cr2O7/H+
under distillation?
A
CH3CH2CH2OH + [O]  CH3COCH3 + H2O
Incorrect, they don’t understand the link between a primary alcohol and an aldehyde.
B
CH3CH2CH2OH + 2[O]  CH3CH2CHO + H2O
Incorrect, while the products are correct, it is not balanced correctly.
C
CH3CH2CH2OH + 2[O]  CH3CH2COOH + H2O
Incorrect, they did not spot that distillation will make an aldehyde rather than a carboxyl.
D
CH3CH2CH2OH + [O]  CH3CH2CHO + H2O
Correct answer.
Your answer
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D
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3.
Haloalkanes can undergo hydrolysis with AgNO3/ethanol. Each C–X bond is
hydrolysed at a different rate. Which is the correct order of this rate and explanation?
A
Rate of Hydrolysis
Explanation
fastest C–F -------- C–I slowest
Fluorine is the most reactive halogen.
Incorrect, fluorine has already reacted to form the haloalkane,
reactivity isn’t a factor.
B
fastest C–F -------- C–I slowest
Fluorine is the most electronegative.
Incorrect, a logical misconception that the largest dipole will cause the fastest
reaction.
C
fastest C–I -------- C–F slowest
Iodine has a larger atomic radius.
Incorrect, the right trend but for the wrong reason.
D
fastest C–I -------- C–F slowest
C–I has the lowest bond enthalpy.
Correct answer.
Your answer
4.
D
Which correctly shows the compound and its environmental impact?
A
CF2Cl2
CO2
C
NOx
Global warming
Ozone depletion
Acid rain
Global dimming
Incorrect, learners should be aware of CO2 causing global warming.
B
Ozone depletion
Global warming
Global dimming
Acid rain
Correct answer. Learners should be able to answer this using just the first two
columns.
C
Global dimming
Global warming
Ozone depletion
Acid rain
Incorrect, they do not know the link between CFCs and ozone.
Maybe did not identify CF2Cl2 as a CFC.
D
Acid rain
Global dimming
Global warming
Ozone depletion
Incorrect, learners should be aware of CO2 causing global warming.
Your answer
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B
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5.
Which functional group(s) are in the substance pictured?
A
alcohol and alkane
Incorrect, they may not recognise the double
bond in skeletal formula.
B
alcohol and alkene
Correct answer.
C
carboxylic acid
Incorrect, they have mistaken the alkene bond
for a carbonyl group.
D
ketone
Incorrect, they have mistaken the alkene bond
for a carbonyl group.
Your answer
6.
Which synthetic route will transform propan-1-ol into 2-bromopropane?
A
NaBr/H2SO4
Incorrect, this would do a direct substitution
forming 1-bromopropane.
B
Br2/UV light
Incorrect starting reagent, this could work with
propane.
C
H2SO4/Heat followed by HBr
Correct answer. The elimination removes the
OH, the HBr attaches across the double bond
with 2-bromopropane as the major product.
D
H2SO4/Heat followed by
Br2/UV light
Incorrect, this could possibly form a haloalkene.
Your answer
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B
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C
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7.
Which group of compounds could not be differentiated from each other using ONLY
infrared spectroscopy?
A
butane, butan-1-ol, butan-2-one, butanoic acid.
Incorrect.
B
butane, butanoic acid, butan-1-ol, butanal.
Incorrect.
C
butane, butan-2-ol, butan-2-one, butanoic acid
Incorrect.
D
butanoic acid, butanal, butan-2-one, butane.
Correct answer, butanone
and butanal both show the
same C=O bond.
Your answer
8.
Which compound could show a small M+1 peak at m/z = 73 during mass
spectrometry?
A
butan-1-ol
Incorrect, this has an Mr of 74 and an M+1 peak
at 75.
B
cyclopentane
Incorrect, this has an Mr of 70 and an M+1 peak
at 71.
C
pentane
Correct answer. This has an Mr of 72, M+1 peak
at 73.
D
pent-1,3-diene
Incorrect, this has an Mr of 68 and an M+1 peak
at 69.
Your answer
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D
5
C
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9.
Which type of bond is not linked to high levels of IR absorption and the greenhouse
effect?
A
C–H
Methane has four of these bonds and has a high
greenhouse potential.
B
C=O
Carbon dioxide has two of these bonds and has
a high greenhouse potential.
C
C–O
Correct answer. This bond type is not found
amongst the most potent greenhouse gases.
D
O–H
Water has two of these bonds and has a high
greenhouse potential.
Your answer
10.
C
Which statement(s) is/are true about the compound pentan-3-one?
1)
It has a composition of 69.7% carbon, 18.6% oxygen and 11.7%
hydrogen.
2)
It will create mass spectra peaks at 86 m/z and 28 m/z.
3)
It will have a characteristic IR absorbance around 1700 cm–1.
A
1, 2 and 3
Correct answer.
B
only 1 and 2
They have failed to identify the C=O absorbance
parameters on the datasheet.
C
only 2 and 3
They are struggling to determine percentage
composition.
D
only 1
They are struggling with both skills mentioned
previously.
Your answer
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Multiple Choice Questions (MCQ) topic quiz
4.2 Alcohols, haloalkanes and analysis
Learner Activity
1.
Which of the below are true for butan-2-ol compared to butane?
A
More volatile
More soluble
Is a primary alcohol
B
More volatile
Less soluble
Is a secondary alcohol
C
Less volatile
More soluble
Is a secondary alcohol
D
Less volatile
Less soluble
Is a tertiary alcohol
Your answer
2.
Which is the correct equation to show the oxidation of propan-1-ol using K2Cr2O7/H+
under distillation?
A
CH3CH2CH2OH + [O]  CH3COCH3 + H2O
B
CH3CH2CH2OH + 2[O]  CH3CH2CHO + H2O
C
CH3CH2CH2OH + 2[O]  CH3CH2COOH + H2O
D
CH3CH2CH2OH + [O]  CH3CH2CHO + H2O
Your answer
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3.
Haloalkanes can undergo hydrolysis with AgNO3/ethanol. Each C–X bond is
hydrolysed at a different rate. Which is the correct order of this rate and explanation?
Rate of Hydrolysis
Explanation
A
fastest C–F -------- C–I slowest
Fluorine is the most reactive halogen.
B
fastest C–F -------- C–I slowest
Fluorine is the most electronegative.
C
fastest C–I -------- C–F slowest
Iodine has a larger atomic radius.
D
fastest C–I -------- C–F slowest
C–I has the lowest bond enthalpy.
Your answer
4.
Which correctly shows the compound and its environmental impact?
CF2Cl2
CO2
C
NOx
A
Global warming
Ozone depletion
Acid rain
Global dimming
B
Ozone depletion
Global warming
Global dimming
Acid rain
C
Global dimming
Global warming
Ozone depletion
Acid rain
D
Acid rain
Global dimming
Global warming
Ozone depletion
Your answer
5.
Which functional group(s) are in the substance pictured?
A
alcohol and alkane
B
alcohol and alkene
C
carboxylic acid
D
ketone
Your answer
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6.
Which synthetic route will transform propan-1-ol into 2-bromopropane?
A
NaBr/H2SO4
B
Br2/UV light
C
H2SO4/Heat followed by HBr
D
H2SO4/Heat followed by
Br2/UV light
Your answer
7.
Which group of compounds could not be differentiated from each other using ONLY
infrared spectroscopy?
A
butane, butan-1-ol, butan-2-one, butanoic acid.
B
butane, butanoic acid, butan-1-ol, butanal.
C
butane, butan-2-ol, butan-2-one, butanoic acid
D
butanoic acid, butanal, butan-2-one, butane.
Your answer
8.
Which compound could show a small M+1 peak at m/z = 73 during mass
spectrometry?
A
butan-1-ol
B
cyclopentane
C
pentane
D
pent-1,3-diene
Your answer
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9.
Which type of bond is not linked to high levels of IR absorption and the greenhouse
effect?
A
C–H
B
C=O
C
C–O
D
O–H
Your answer
10.
Which statement(s) is/are true about the compound pentan-3-one?
1)
It has a composition of 69.7% carbon, 18.6% oxygen and 11.7%
hydrogen.
2)
It will create mass spectra peaks at 86 m/z and 28 m/z.
3)
It will have a characteristic IR absorbance around 1700 cm–1.
A
1, 2 and 3
B
only 1 and 2
C
only 2 and 3
D
only 1
Your answer
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