Biochemistry - Gas Chromatography

Exercise :: Gas Chromatography - Section 1

  • Gas Chromatography - Section 1
6. 

What is the typical internal diameter of fused silica capillary columns?

A. 0.2-0.3 mm
B. 0.3-0.5mm
C. 0.5-1.0 mm
D. 1.0-2.0 mm

Answer: Option A

Explanation:

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7. 

Resolution is proportional to the

A. number of theoretical plates in a column
B. square root of the number of theoretical plates in a column
C. square of the number of theoretical plates in a column
D. cube root of the number of theoretical plates in a column

Answer: Option B

Explanation:

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8. 

Derivatisation of a sample is carried out to

A. reduce polarity of the analytes
B. increase the detector response
C. increase volatility of the analytes
D. all of the above

Answer: Option D

Explanation:

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9. 

Which of the statements is correct?

A. Gas chromatography is used to analyse gases
B. Gas chromatography is used to analyse solids
C. Gas chromatography is used to analyse gases, solutions and solids
D. All of the above

Answer: Option D

Explanation:

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10. 

In column switching chromatography

A. compounds trapped on one column are eluted to another column
B. one column is removed and replaced by another
C. the flow to the column is switched on and off repeatedly
D. any of the above

Answer: Option A

Explanation:

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