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Gas Chromatography

Gas Chromatography
The GC trace obtained after an experiment is called a

graph
chromatograph
chromatogram
chromatophore

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Gas Chromatography
What useful information can be found from a Van Deemter plot?

Optimum column length
Optimum column temperature
Optimum mobile phase flow rate
The selectivity factor

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Gas Chromatography
Which of the following is not used for detection in GC?

NMR
Flame ionisation
Electrical conductivity
Infrared spectroscopy

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Gas Chromatography
Which of the following gases is unsuitable for use as a GC carrier gas?

Nitrogen
Oxygen
All of these
Helium

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Gas Chromatography
What are the benefits of decreasing the column internal diameter?

Reduced risk of column overloading
Increased resolution
All of these
Increased sample capacity

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Gas Chromatography
Which of the statements is correct?

Gas chromatography is used to analyse gases, solutions and solids
Gas chromatography is used to analyse solids
All of these
Gas chromatography is used to analyse gases

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