Question detail
Which answer avoids confusing chromatography with another qualitative analysis result?
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. umber evidence: more than one spot on the chromatogram
- B. umber distractor: an observation from a different test is used
- C. umber distractor: the answer gives a conclusion without evidence
- D. umber distractor: the response describes a measurement rather than identification
Answer
The correct answer is umber evidence: more than one spot on the chromatogram. 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 umber evidence: more than one spot on the chromatogram. Use this as an exam check: if the observation is not Rf or separation evidence, the conclusion about chromatography is not properly supported. 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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