Biochemistry - Gas Chromatography

Exercise :: Gas Chromatography - Section 1

  • Gas Chromatography - Section 1
21. 

Sample retention in the column is measured by

A. retention time
B. retention factor
C. retention index
D. all of these

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

22. 

Column bleeding occurs when

A. elution of the analyte is extended over time
B. the column is cracked and stationary phase leaks out
C. traces of the stationary phase are eluted
D. the column breaks during installation and causes personal injury

Answer: Option C

Explanation:

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23. 

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: Option B

Explanation:

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24. 

Doubling the column's length increases resolution by a factor of

A. (2)0.5
B. 2
C. 3
D. 4

Answer: Option A

Explanation:

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25. 

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: Option B

Explanation:

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