The most commonly used adsorbent for chromatographic separation of organic compounds is :
Correct answer: B. Alumina
- A. Silica gel
- B. Alumina
- C. Fuller's earth
- D. Activated charcol
Explanation
The adsorbents commonly employed for chromatography are alumina (specially prepared for this purpose), magnesium oxide, and sucrose. The solvents used are usually organic-acetone, bezene and petroleum ether etc.
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Solutions are described using molarity, molality, normality, mole fraction, percentage concentration and parts per million. Coverage also includes vapour-pressure lowering, boiling-point elevation, freezing-point depression and osmotic pressure, then distinguishes true solutions, colloids and suspensions by particle size, stability, light scattering and settling.
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