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. banyan evidence: one spot on the chromatogram
- B. banyan distractor: an observation from a different test is used
- C. banyan distractor: the answer gives a conclusion without evidence
- D. banyan distractor: the response describes a measurement rather than identification
Answer
The correct answer is banyan evidence: 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 banyan evidence: 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
Misunderstanding Pure Substances
Students often think that a pure substance can produce multiple spots on a chromatogram.
Remember that a pure substance will always produce a single spot on a chromatogram, indicating it is not mixed with any other substances.
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