plumiModern analytical techniques: OCR A‑Level Chemistry B questions
Every OCR A-Level Chemistry B exam question on CD Modern analytical techniques (specification points CD(n)), 2016–2025, with its mark scheme and examiner’s report.
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Q1(c)(i)
The whole paper ↗![June 2024 Paper 2, question 1(c)(i): Name a suitable carrier gas. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h43302-jun24-01-ci-qp.webp?v=3)
Q1(c)(ii)
The whole paper ↗![June 2024 Paper 2, question 1(c)(ii): What does the stationary phase consist of? [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h43302-jun24-01-cii-qp.webp?v=3)
Q1(d)
The whole paper ↗
Q4(c)(i)
The whole paper ↗![June 2023 Paper 2, question 4(c)(i): State a method of separating propanone vapour from human breath, allowing it to be analysed by a mass spectrometer. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h43302-jun23-04-ci-qp.webp?v=3)
Q1(a)(i)
The whole paper ↗![November 2021 Paper 2, question 1(a)(i): State an important property of the carrier gas. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h43302-nov21-01-ai-qp.webp?v=3)
Q1(a)(ii)
The whole paper ↗![November 2021 Paper 2, question 1(a)(ii): What does the column consist of? [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h43302-nov21-01-aii-qp.webp?v=3)
Q1(b)(i)
The whole paper ↗![November 2021 Paper 2, question 1(b)(i): Suggest the method used to identify these compounds as they emerge from the column. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h43302-nov21-01-bi-qp.webp?v=3)
Q1(b)(ii)
The whole paper ↗![November 2021 Paper 2, question 1(b)(ii): Which of the compounds in Table 1.1 has the shortest retention time? [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h43302-nov21-01-bii-qp.webp?v=3)
All 13 questions on Modern analytical techniques, as a list
- June 2025, Paper 1, Q12 (1 mark): A scientist runs a mixture of four hydrocarbons through a gas-liquid chromatography apparatus. The chromatogram obtained is: E D F C What is correct? A Compound
- June 2024, Paper 2, Q1(c)(i) (1 mark): Name a suitable carrier gas. [1]
- June 2024, Paper 2, Q1(c)(ii) (2 marks): What does the stationary phase consist of? [2]
- June 2024, Paper 2, Q1(d) (4 marks): Oils are fats which are liquid at room temperature. Many oils are made from palmitic and stearic acids, as well as other carboxylic acids. To identify an oil, t
- June 2023, Paper 1, Q8 (1 mark): Which of the following is correct for gas-liquid chromatography? A A reactive carrier gas is used. B The column consists of a volatile liquid on a porous suppor
- June 2023, Paper 2, Q4(c)(i) (1 mark): State a method of separating propanone vapour from human breath, allowing it to be analysed by a mass spectrometer. [1]
- November 2021, Paper 2, Q1(a)(i) (1 mark): State an important property of the carrier gas. [1]
- November 2021, Paper 2, Q1(a)(ii) (2 marks): What does the column consist of? [2]
- November 2021, Paper 2, Q1(b)(i) (1 mark): Suggest the method used to identify these compounds as they emerge from the column. [1]
- November 2021, Paper 2, Q1(b)(ii) (1 mark): Which of the compounds in Table 1.1 has the shortest retention time? [1]
- November 2020, Paper 1, Q9 (1 mark): Which statement about gas-liquid chromatography is correct? A The column consists of a low boiling liquid on a porous support. B The compound with the longest r
- June 2019, Paper 1, Q23 (1 mark): The diagram below shows a gas chromatogram. 4 2 abundance 1 5 3 time Which statement about the gas chromatogram is correct? A The mixture consisted of at least
- June 2017, Paper 1, Q12 (1 mark): What describes a substance with a high retention time in gas-liquid chromatography? A high volatility B high solubility in the stationary phase C high affinity
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