Gas Chromatography General Knowledge Quiz | Gas Chromatography General Knowledge Objective Type Questions & Answers

Questions
21 Which of the following gases is unsuitable for use as a GC carrier gas?
A Nitrogen
B Helium
C Oxygen
D All of the above

Answer: Oxygen
22 Sample injection is considered successful if
A all of the sample in the injector has been added to the column
B the sample is concentrated at the start of the column
C the sample is spread evenly along the column
D the sample is homogenously spread along the column

Answer: the sample is concentrated at the start of the column
23 Doubling the column’s length increases resolution by a factor of
A (2)0.5
B 2
C 3
D 4

Answer: (2)0.5
24 Which of the following are not used as stationary phases in a GC column?
A Polysiloxanes
B Silica
C Cyclodextrins
D None are used as stationary phases

Answer: Silica
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