Q24 · CSIR NET Chemistry, June 2018
Paper: CSIR NET June 2018 · Subject: Inorganic Chemistry · Chapter: Analytical Chemistry · Topic: Chromatography · Marks: 2 · Difficulty: Medium
Height equivalent to theoretical plate (HETP) in gas liquid chromatography depends Significantly on which of the following? (A) Temperature of column (B) Velocity of carrier gas (C) Packing of column (D) Column material
(a)A, B and C
(b)C and D
(c)B, C and D
(d)A and C
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
By the van Deemter equation, HETP depends on carrier-gas velocity, column packing (particle size, eddy diffusion) and temperature (diffusion coefficients, mass transfer). A, B and C (a).
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