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MCQ on HPLC: Page-4

Degassing of the mobile phase can be done by all of the following except
Distillation

(A) P

(B) Q

(C) R

(D) S

The main purpose of the derivitization in HPLC is

(A) To increase the resolution

(B) To increase the detectability of a compound

(C) To decrease the retention time

(D) All of the above

The pKa of free silanol groups is about
10

(A) S

(B) R

(C) Q

(D) P

Which of the following HPLC pump has limited solvent capacity

(A) Reciprocating

(B) Displacement

(C) Reciprocating dual pumps

(D) All of the above

Elevated temperature of the column may lead to

(A) Evaporation of analyte

(B) Bleeding

(C) Increase in efficiency

(D) low resolution