Curriculum
Course: IAL Edexcel Modular (Chemistry)
time left:
:
:
Login

Curriculum

IAL Edexcel Modular (Chemistry)

Unit 1. Structure, Bonding and Introduction to Organic Chemistry

0/46

Unit 2. Energetics, Group Chemistry, Halogenoalkanes and Alcohols

0/36

Unit 3. Practical Skills in Chemistry I

0/7

Unit 4. Rates, Equilibria and Further Organic Chemistry

0/23

Unit 5. Transition Metals and Organic Nitrogen Chemistry

0/23

Unit 6. Practical Skills in Chemistry II

0/6
Quiz

5.4 Organic Chemistry: Arenes – Check yourself

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit

5.4 Organic IAL Modular Chemistry check yourself quiz: free practice for IAL Edexcel Modular (chemistry). Work through this 5.4 Organic IAL Modular Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 5.4 Organic Chemistry: Arenes — Notes — IAL Chemistry Notes lesson. More practice: IAL Edexcel Modular (chemistry) — all units. Syllabus: Pearson Edexcel International A Levels.

  • Questions count: 17
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
What is the C–C bond length in benzene?
0.154 nm
0.139 nm
0.134 nm
0.120 nm
2.
Which electrophile is involved in nitration of benzene?
NO2-
NO3-
HNO3
NO2+
3.
Why does benzene undergo substitution rather than addition?
Benzene has no pi electrons
Substitution keeps the stable delocalised ring intact
Addition products are gases
Electrophiles cannot approach a planar molecule
4.
Which catalyst is used in Friedel-Crafts acylation?
AlCl3
Ni
H3PO4
Pt
5.
What is formed when phenol reacts with excess bromine water?
Bromobenzene
4-bromophenol only
Cyclohexanol
2,4,6-tribromophenol
6.
The enthalpy of hydrogenation of benzene is less exothermic than 3 × that of cyclohexene. This shows benzene is:
less stable than expected
more stable than expected
an alkene
unsaturated with three C=C
7.
Which statement best describes Arene?
An aromatic hydrocarbon containing one or more benzene rings.
A species that accepts a pair of electrons to form a new covalent bond.
Alkylation or acylation of benzene using a halogenoalkane or acyl chloride with an AlCl3 catalyst.
An early model of benzene with alternating C=C and C–C bonds.
8.
Which statement best describes Friedel-Crafts reaction?
An aromatic hydrocarbon containing one or more benzene rings.
The electrophile NO2+, formed from concentrated nitric and sulfuric acids.
The extra stability of benzene compared with the hypothetical cyclohexa-1,3,5-triene, shown by its less exothermic enthalpy of hydrogenation.
Alkylation or acylation of benzene using a halogenoalkane or acyl chloride with an AlCl3 catalyst.
9.
Which statement best describes Halogen carrier?
A reaction in which an electrophile replaces a hydrogen atom on an aromatic ring, keeping the delocalised system intact.
A Lewis acid catalyst such as FeBr3 or AlCl3 that polarises a halogen molecule to generate an electrophile.
Alkylation or acylation of benzene using a halogenoalkane or acyl chloride with an AlCl3 catalyst.
C6H5OH, an arene with an OH group attached directly to the ring.
10.
Which statement best describes Kekulé structure?
An early model of benzene with alternating C=C and C–C bonds.
A reaction in which an electrophile replaces a hydrogen atom on an aromatic ring, keeping the delocalised system intact.
The electrophile NO2+, formed from concentrated nitric and sulfuric acids.
Alkylation or acylation of benzene using a halogenoalkane or acyl chloride with an AlCl3 catalyst.
11.
Methylbenzene reacts with Cl2 in UV light. The main organic product is:
2-chloromethylbenzene
4-chloromethylbenzene
Chlorobenzene
(Chloromethyl)benzene
12.
Which substituent directs an incoming electrophile to the 3-position?
−OH
−NO2
−CH3
−NH2
13.
What is the role of FeBr3 in the bromination of benzene?
Oxidising agent
Nucleophile
Halogen carrier that polarises Br2 to form Br+
Solvent
14.
What evidence shows benzene is more stable than cyclohexa-1,3,5-triene?
Its hydrogenation is less exothermic than 3 × that of cyclohexene
It decolourises bromine water
It has alternating bond lengths
It is a liquid
15.
Which statement best describes Electrophile?
The extra stability of benzene compared with a hypothetical cyclohexa-1,3,5-triene, about 150 kJ mol−1.
A ring of electron density above and below the benzene ring from overlap of six p orbitals.
An electron-pair acceptor, attracted to regions of high electron density.
Oxidation of an alkyl group on a benzene ring to −COOH by hot alkaline KMnO4, then acid.
16.
Which statement best describes Directing effect?
A hydrocarbon containing one or more benzene rings, e.g. benzene C6H6 or methylbenzene.
NO2+, the electrophile in nitration, made from conc. HNO3 and conc. H2SO4.
A ring of electron density above and below the benzene ring from overlap of six p orbitals.
The influence of an existing substituent on the ring positions (2,4 or 3) where a new group enters.
17.
Which statement best describes Delocalised π system?
A ring of electron density above and below the benzene ring from overlap of six p orbitals.
An electron-pair acceptor, attracted to regions of high electron density.
The influence of an existing substituent on the ring positions (2,4 or 3) where a new group enters.
Alkylation or acylation of an arene using a halogenoalkane or acyl chloride with an AlCl3 catalyst.
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
Part of Unit 5. Transition Metals and Organic Nitrogen Chemistry — see every lesson and quiz in this unit.
Accepted payment methods