Module 4

Question 1

Iodoplatinate spray reagent for TLC reacts with:

Answer 1

Nitrogenous bases

Question 2

Ninhydrin is used as a TLC chromogenic spray reagent used to detect:

Answer 2

Primary and secondary amines

Question 3

The color generated when a blood sample containing salicyclic acid is mixed with Trinder’s reagent:

Answer 3

Purple

Question 4

“At a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.”

Answer 4

Henry’s Law

Question 5

The Marquis test is a useful broad-spectrum test used mostly for:

Answer 5

Opium alkaloids

Question 6

Which term describes the ratio of the analyte in one phase of a bi-phasic system to the ratio in the second phase?

Answer 6

Partition Coefficient

Question 7

What form of SPE separates analytes based upon their polarity?

Answer 7

Reversed Phase SPE

Question 8

What form of SPE involves a polar matrix and a non-polar stationary phase?

Answer 8

Reversed Phase SPE

Question 9

What form of SPE involves hydrophobic interactions?

Answer 9

Reversed Phase SPE

Question 10

What form of SPE has a polar analyte in a non-polar matrix and a polar bonded silica?

Answer 10

Normal Phase SPE

Question 11

What form of SPE involves hydrophilic interactions?

Answer 11

Normal Phase SPE

Question 12

-OH and -SH groups are generally derivatized with what type of derivatizing reagent?

Answer 12

Silylation reagents

Question 13

NH groups are generally derivatized with what type of derivatizing reagent?

Answer 13

Acylation reagents