Question detail
Which statement would earn credit for Explain that chromatography involves a stationary phase and a mobile phase.?
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. The solvent front
- B. The paper
- C. The coloured substance
- D. The developing chamber
Answer
The correct answer is The paper. 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 The paper. The answer stays inside Purity, formulations and chromatography by linking the observation to the conclusion instead of naming a substance without evidence. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Confusing Phases in Chromatography
Students often confuse the stationary phase with the mobile phase in chromatography.
Correct this by using the approved Chromatography context: Explain that chromatography involves a stationary phase and a mobile phase. Name the correct test or chemistry idea, state the observation accurately, and then give the conclusion supported by that evidence. Do not swap gas tests, flame tests, cation tests, anion tests, chromatography terms, pure substances, and formulations.
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