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

(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