Chromatography-Lect1-GA-BSNU

Which of the following have a better eluting power than developers?

• Developer

• Solvent

• Displacer

• Eluent

Addition of solvent mixture of fixed composition in column chromatography is known as …

• linear elution

• stepwise elution

• isocratic elution

• gradient

The ideal adsorbent should have the following criteria except …………

• insoluble in solvent

• large particle size

• inert to adsorptive

• colorless

To achieve good separation, the column should have the following feature ………

• Large particle size of st.ph

• low solvent viscosity

• increased solvent flow rate

• high temperature

In normal phase Chromatography, the following are true except …………………

• elution with non polar solvent

• for analysis of sugars

• Non polar st.ph

• for analysis of alkaloids

The following is true considering cationic exchanger ………………..

• Active ions are anions

• Cationic fixed charge

• supplied in the form Na+ salt

• supplied in the form od Cl- salt

In ………………….. analysis, elution is carried by a solvent, which has a greater affinity for the stationary phase than the sample components.

• elution

• frontal

• displacement

• gradient

In ………… chromatography, separation is based on the specific interaction between one kind of solute molecule and a second molecule that is immobilized on a stationary phase.

• gel filteration

• affinity

• ion exchange

• partition

Q2: Rearrange the following compound in order of elution out of the chromatographic column

(a)