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Course: IAL Edexcel Modular (Chemistry)
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IAL Edexcel Modular (Chemistry)

Unit 1. Structure, Bonding and Introduction to Organic Chemistry

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Unit 2. Energetics, Group Chemistry, Halogenoalkanes and Alcohols

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Unit 3. Practical Skills in Chemistry I

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Unit 4. Rates, Equilibria and Further Organic Chemistry

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Unit 5. Transition Metals and Organic Nitrogen Chemistry

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Unit 6. Practical Skills in Chemistry II

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Quiz

4.8 Organic Analytical Techniques – Check yourself

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Organic Analytical Techniques IAL Modular Chemistry check yourself quiz: free practice for IAL Edexcel Modular (chemistry). Work through this Organic Analytical Techniques IAL Modular Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 4.8 Organic Analytical Techniques — Notes — IAL Chemistry Notes lesson. More practice: IAL Edexcel Modular (chemistry) — all units. Syllabus: Pearson Edexcel International A Levels.

  • Questions count: 10
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
How many peaks are in the 13C NMR spectrum of propan-2-ol?
1
2
3
4
2.
A quartet in 1H NMR indicates the protons are adjacent to:
2 H
3 H
4 H
1 H
3.
Why is TMS used in NMR?
It absorbs IR strongly
It dissolves all samples
It gives a single peak used as the 0 ppm reference
It splits other peaks
4.
Why are deuterated solvents used in 1H NMR?
They give no proton signal
They increase splitting
They are more polar
They raise the chemical shift
5.
In TLC a spot moves 3.0 cm and the solvent front 7.5 cm. Rf is:
2.5
0.60
0.25
0.40
6.
In GC, what is the mobile phase?
A liquid under pressure
Silica gel
An inert carrier gas
A non-volatile liquid
7.
Which statement best describes TMS?
The ion M+ formed by loss of one electron from the whole molecule; its m/z gives the relative molecular mass.
Mass spectrometry measuring m/z to four or more decimal places, allowing molecular formulae with the same nominal mass to be distinguished.
The position of an NMR signal in ppm relative to the TMS reference, indicating the chemical environment of the nucleus.
Tetramethylsilane, Si(CH3)4, the reference compound assigned δ = 0 ppm; inert, volatile and giving one strong signal.
8.
Which statement best describes Retention time?
The ion M+ formed by loss of one electron from the whole molecule; its m/z gives the relative molecular mass.
A set of equivalent nuclei that experience the same magnetic field and so give the same signal.
The phase that does not move in chromatography, e.g. silica on a TLC plate or the column packing in HPLC/GC.
The time taken for a component to pass from injection to the detector in HPLC or GC.
9.
Which statement best describes Chemical environment?
The time taken for a component to pass from injection to the detector in HPLC or GC.
A set of equivalent nuclei that experience the same magnetic field and so give the same signal.
Splitting of a proton NMR signal by protons on adjacent carbon atoms, following the n+1 rule.
The phase that moves through the stationary phase carrying the components, e.g. solvent or carrier gas.
10.
Which statement best describes Spin-spin splitting?
The relative area under a proton NMR peak, proportional to the number of protons in that environment.
The position of an NMR signal in ppm relative to the TMS reference, indicating the chemical environment of the nucleus.
The time taken for a component to pass from injection to the detector in HPLC or GC.
Splitting of a proton NMR signal by protons on adjacent carbon atoms, following the n+1 rule.
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Part of Unit 4. Rates, Equilibria and Further Organic Chemistry — see every lesson and quiz in this unit.
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