OCR AS/A Level Chemistry A
(H032/H432)
Module 4 Topic Test – Core Organic Chemistry
1 Which volume of oxygen gas, at room temperature and pressure, is required
for complete combustion of 1.25 × 10–3 mol of propan-1-ol?
A 105 cm3
B 120 cm3
C 135 cm3
D 150 cm3
C
Your answer [1]
2 Three of the following displayed formulae represent the same isomer of
C3H4Cl2 but one structure represents a different isomer, X.
Which displayed formula represents X?
D
Your answer [1]
Page
, OCR AS/A Level Chemistry A
(H032/H432)
3 Which alcohol will not react with potassium dichromate(VI) in sulfuric acid?
A H3CH2CH(OH)CH2CH3
B CH3CH2CH(CH3)CH2OH
C (CH3)2CHCH(CH3)OH
D (CH3CH2)2C(CH3)OH
D
Your answer [1]
4 A section of a polymer chain is shown below.
Identify the monomer that would give rise to this section of addition polymer.
A E-But-2-ene
B Z-But-2-ene
C Methylpropene
D Propene
D
Your answer [1]
Page
, OCR AS/A Level Chemistry A
(H032/H432)
Module 4 Topic Test – Core Organic
Chemistry
5 Which statement about the two alkenes CH3CH2CH=CH2 and
CH3CH=CHCH3 is correct?
A Neither exhibits cis–trans isomerism.
B Neither may be polymerised.
C Neither reacts with bromine to form 1,4-dibromobutane.
D Neither reacts with hydrogen to form butane.
C
Your answer [1]
6 Hydrobromic acid reacts with ethene to form
bromoethane. What is the best description of the
organic intermediate?
A It is a free radical.
B It contains carbon, hydrogen and bromine.
C Its structure is planar.
D It is an electrophile.
D
Your answer [1]
I don’t think it can be a free radical because the molecule split heterolytically
so formed a carbocation (electrophile)?
7 1,2-Dibromo-3-chloropropane (DBCP) has been used in the control of
earthworms in agricultural land.
What would be the best synthesis of DBCP?
A CH3CH2CH2Cl + 2Br2 ⟶ DBCP + 2HBr
B CH3CHBrCH2Br + Cl2 ⟶ DBCP + HCl
C CH2=CHCHBr2 + HCl ⟶ DBCP
D CH2=CHCH2Cl + Br2 ⟶ DBCP
D
Your answer [1]
© OCR Page 3
2016
(H032/H432)
Module 4 Topic Test – Core Organic Chemistry
1 Which volume of oxygen gas, at room temperature and pressure, is required
for complete combustion of 1.25 × 10–3 mol of propan-1-ol?
A 105 cm3
B 120 cm3
C 135 cm3
D 150 cm3
C
Your answer [1]
2 Three of the following displayed formulae represent the same isomer of
C3H4Cl2 but one structure represents a different isomer, X.
Which displayed formula represents X?
D
Your answer [1]
Page
, OCR AS/A Level Chemistry A
(H032/H432)
3 Which alcohol will not react with potassium dichromate(VI) in sulfuric acid?
A H3CH2CH(OH)CH2CH3
B CH3CH2CH(CH3)CH2OH
C (CH3)2CHCH(CH3)OH
D (CH3CH2)2C(CH3)OH
D
Your answer [1]
4 A section of a polymer chain is shown below.
Identify the monomer that would give rise to this section of addition polymer.
A E-But-2-ene
B Z-But-2-ene
C Methylpropene
D Propene
D
Your answer [1]
Page
, OCR AS/A Level Chemistry A
(H032/H432)
Module 4 Topic Test – Core Organic
Chemistry
5 Which statement about the two alkenes CH3CH2CH=CH2 and
CH3CH=CHCH3 is correct?
A Neither exhibits cis–trans isomerism.
B Neither may be polymerised.
C Neither reacts with bromine to form 1,4-dibromobutane.
D Neither reacts with hydrogen to form butane.
C
Your answer [1]
6 Hydrobromic acid reacts with ethene to form
bromoethane. What is the best description of the
organic intermediate?
A It is a free radical.
B It contains carbon, hydrogen and bromine.
C Its structure is planar.
D It is an electrophile.
D
Your answer [1]
I don’t think it can be a free radical because the molecule split heterolytically
so formed a carbocation (electrophile)?
7 1,2-Dibromo-3-chloropropane (DBCP) has been used in the control of
earthworms in agricultural land.
What would be the best synthesis of DBCP?
A CH3CH2CH2Cl + 2Br2 ⟶ DBCP + 2HBr
B CH3CHBrCH2Br + Cl2 ⟶ DBCP + HCl
C CH2=CHCHBr2 + HCl ⟶ DBCP
D CH2=CHCH2Cl + Br2 ⟶ DBCP
D
Your answer [1]
© OCR Page 3
2016
