Question detail
In Chromatography, which answer best matches the evidence for chromatography?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Purity, formulations and chromatography
Question
- A. Because they change with temperature
- B. Because they depend on the solvent used
- C. Because they are affected by the type of paper
- D. All of the above
Answer
The correct answer is All of the above. It matches chromatography because the evidence is spot and solvent-front distances and the expected result is Rf or separation evidence.
Explanation
The correct option is All of the above. This is correct because spot and solvent-front distances is the evidence expected for chromatography, and Rf or separation evidence is the result that supports the conclusion. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Misunderstanding Chromatography
Students often think that chromatography separates substances based on their color alone.
Emphasize that chromatography separates substances based on their solubility and interaction with the stationary and mobile phases, not just their color.
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