UPSC Combined Geo-Scientist, Mains · 2020 · Mains Paper III
Q4(c)(ii). Alumina as an adsorbent
Question
State advantages and disadvantages of alumina as a stationary phase.
Answer in brief
Alumina gives strong and adjustable adsorption, but its activity and surface chemistry can affect recovery.
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CoversAlumina as an adsorbentChromatographic stationary phases
All parts of Question 4
- 4(a) Specific surface area of divided cubes5 marks
- 4(b) Sodium oxide in feldspar10 marks
- 4(c)(i) Preparation and visualisation of TLC plates5 marks
- 4(c)(ii) Alumina as an adsorbent5 marks
- 4(d) Standard-addition calculation5 marks