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MCQ on principles of chromatography: Page-4

Which of the following is a cationic exchanger resin
Sulfonate resins

(A) Sulfonate resins

(B) Quaternary ammonium resins

(C) Silica resins

(D) Sephadex

The adsorption mechanism of silica gel involves

(A) Interaction of solute with acidic silanol groups

(B) Interaction of solute with basic silanol groups

(C) Interaction of solute with neutral silanol groups

(D) Interaction of solute with inert silane groups

The activity of the different hydroxyl groups on the silica gel are in the order of

(A) Reactive> bound > free hydroxyl groups

(B) Free > reactive > bound hydroxyl groups

(C) Free > bound > reactive hydroxyl groups

(D) Reactive> free> bound hydroxyl groups

The activity of a silica gel is decreased by addition of

(A) Water

(B) Acetonitrile

(B) Tetrahydro furan

(D) All of the above

Which of the following resins exchange property is dependent on pH.
Carboxylic acid exchangers

(A) P

(B) Q

(C) R

(D) S