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. They indicate the purity of a substance
- B. They help compare substances under the same conditions
- C. They determine the boiling point of a substance
- D. They identify the components of a formulation
Answer
The correct answer is They help compare substances under the same conditions. 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 They help compare substances under the same conditions. 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 Mixtures
Students often think that a mixture will produce only one spot on a chromatogram, similar to a pure substance.
Remember that a mixture can contain multiple components, leading to multiple spots on the chromatogram.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.