Chromatography

Question 1

Chromatography is the process for identification, purification and separation of
components of a mixture on the basis of ____________
a) Difference in their boiling point
b) Difference in their melting point
c) Difference in their affinity for mobile and stationary phase
d) Difference in their solubility

Answer 1

c) Difference in their affinity for mobile and stationary phase

Question 2

Chromatography involves two mutually ____________
a) Immiscible phases
b) Miscible phases
c) Soluble phases
d) None of the mentioned

Answer 2

a) Immiscible phases

Question 3

There is no need of support if packed into a column when the stationary phase is ____________
a) Gas
b) Liquid
c) Solid
d) None of the mentioned

Answer 3

c) Solid

Question 4

Which of the following is not a stationary phase?
a) Liquid-liquid chromatography
b) Gas-liquid chromatography
c) Gas-solid chromatography
d) Solid-solid chromatography

Answer 4

d) Solid-solid chromatography

Question 5

Liquid chromatography is a technique for separating _____
a) Ions that are not dissolved in a solvent
b) Ions that are dissolved in a solvent
c) Ions that are dissolved in a solute
d) All of the mentioned

Answer 5

b) Ions that are dissolved in a solvent

Question 6

In exclusion chromatography, solute molecules are separated based on ____________
a) Molecular geometry and size
b) Molecular composition
c) Molecular phase
d) Molecular formula

Answer 6

a) Molecular geometry and size

Question 7

The gas-solid chromatography is ______________ chromatography as per basic principle involved.
a) Exclusion
b) Ion-exchange
c) Adsorption
d) Absorption

Answer 7

c) Adsorption

Question 8

A proper solvent that is passed through the column for elution so that separated components can be collected is called ____________
a) Adsorbent
b) Buffer solution
c) Mobile phase
d) None of the mentioned

Answer 8

b) Buffer solution

Question 9

The relative solubility of solute in both the phases determines the ____________
a) Rate of movement of solvent
b) Rate of disappearance of solvent
c) Rate of movement of solute
d) Rate of disappearance of solute

Answer 9

c) Rate of movement of solute

Question 10

10.If the mobile phase is gas, movement of solute is determined by its ____________
a) Boiling point
b) Melting point
c) Solubility
d) Volatility

Answer 10

d) Volatility