Question detail
What is the main principle behind chromatography as a separation technique?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
Question
- A. It separates based on solubility and adsorption
- B. It relies on differences in boiling points
- C. It uses a filter to separate particles
- D. It involves heating to evaporate liquids
Answer
The correct option is It separates based on solubility and adsorption.
Explanation
The correct option is It separates based on solubility and adsorption. It separates based on solubility and adsorption is correct because it directly supports the approved learning objective to describe filtration as a separation technique for suitable mixtures. This is tested in the subtopic Mixtures within A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, so the reasoning must stay within AQA GCSE Chemistry 8462 Unit 4.1. The other options are weaker because they either confuse a nearby Chemistry concept, use the wrong subtopic context, or do not answer Mixtures precisely. Repair marker 37946e44 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Filtration
Students often think that filtration can separate all types of mixtures, including those where the components are chemically combined.
Remember that filtration is only effective for separating mixtures of solids and liquids where the solid is not dissolved in the liquid.
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