Gas Chromatography
Which of the following are not used as stationary phases in a GC column?

Polysiloxanes
Silica
None are used as stationary phases
Cyclodextrins

ANSWER DOWNLOAD EXAMIANS APP

Gas Chromatography
What does the selectivity factor describe?

The relative separation achieved between two species
None of these
The proportional difference in widths of two chromatographic peaks
The maximum number of different species which a column can separate simultaneously

ANSWER DOWNLOAD EXAMIANS APP