The purity of a substance can be identified by:
Correct answer: C. Chromatography
- A. Sublimation
- B. Filtration
- C. Chromatography
- D. Solvent extraction
Explanation
A is incorrect as sublimation purifies solids rather than identify themB is incorrect as filtration separates insoluble solutes from solvents.C is correct as chromatography is a tool to separate different solvents in a solute and their purification.D is incorrect as solvent extraction only extracts solutes,but doesnt identify them.
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Chromatography
Chromatography separates the components of a mixture through different distributions between a stationary phase and a mobile phase. It covers paper, thin-layer and column chromatography, retention or migration behaviour, the calculation and interpretation of Rf values, and the use of colour or other detection methods to identify substances.
Practise Analytical Chemistry
105 free Analytical Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.