Subsection 12.3. Chromatography for Chemistry, O Level - revisedeck

12.3. Chromatography

A subsection of Chemistry, 5070, through 12. Experimental techniques and chemical analysis

Listing 10 of 23 questions

A mixture of two substances is spotted on to a piece of chromatography paper. The paper is inserted into a beaker containing a liquid. liquid beaker spot of mixture chromatography paper For separation of the substances to occur the mixture must A be placed so that the spot is just below the level of the liquid. B be soluble in the liquid. C contain substances of the same Rf values. D contain substances that are coloured.

5070_s07_qp_1

MCQ

2007

Paper 1, Variant 0

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The diagram shows a chromatogram of several inks. black blue brown green red yellow Which statement is correct?

5070_s09_qp_1

MCQ

2009

Paper 1, Variant 0

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A mixture of two substances is spotted onto a piece of chromatography paper. The paper is inserted into a beaker containing a liquid. spot of mixture chromatography paper liquid beaker For separation of the substances to occur the spot of mixture must A be placed so that the spot is just below the level of the liquid. B be soluble in the liquid. C contain substances of the same Rf values. D contain substances that are coloured.

5070_s12_qp_11

MCQ

2012

Paper 1, Variant 1

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A mixture of two substances is spotted onto a piece of chromatography paper. The paper is inserted into a beaker containing a liquid. spot of mixture chromatography paper liquid beaker For separation of the substances to occur the spot of mixture must A be placed so that the spot is just below the level of the liquid. B be soluble in the liquid. C contain substances of the same Rf values. D contain substances that are coloured.

5070_s12_qp_12

MCQ

2012

Paper 1, Variant 2

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Q is a pure sample of a substance that has a single Rf value of 0.9. In the chromatogram shown...

5070_s16_qp_12

MCQ

2016

Paper 1, Variant 2

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Four samples are spotted onto chromatography paper. It is known that one of these samples is pure compound Q. A separate sample of pure compound Q is also spotted onto the paper. The paper is placed in a solvent. The diagram shows the chromatogram produced. solvent front start sample Q Which statement is correct?

5070_s17_qp_12

MCQ

2017

Paper 1, Variant 2

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A paper chromatography experiment is carried out to separate and identify the mixture of amino acids produced from the hydrolysis of a protein. Which apparatus is needed?

5070_s19_qp_11

MCQ

2019

Paper 1, Variant 1

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A paper chromatography experiment is carried out to find an Rf value for Fe3+. The result is shown...

5070_s20_qp_11

MCQ

2020

Paper 1, Variant 1

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A paper chromatography experiment is carried out to find an Rf value for Fe3+. The result is shown...

5070_s20_qp_12

MCQ

2020

Paper 1, Variant 2

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Which statement is correct?

5070_s22_qp_12

MCQ

2022

Paper 1, Variant 2

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Questions Discovered

23