Question detail
For Purity, formulations and chromatography, which option uses the correct Chemical analysis 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. Solid phase and liquid phase
- B. Stationary phase and mobile phase
- C. Gas phase and liquid phase
- D. Liquid phase and solid phase
Answer
The correct answer is Stationary phase and mobile phase. 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 Stationary phase and mobile phase. This response is stronger than the distractors because it keeps the test, observation, and interpretation in the correct order for chromatography. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Confusing Chromatography with Other Methods
Students often confuse chromatography with other separation methods like filtration or distillation.
Focus on the unique aspects of chromatography, such as the use of a stationary phase and a mobile phase for separating mixtures.
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