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Gas Chromatography

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

chromatophore
chromatograph
graph
chromatogram

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Gas Chromatography
Which of the following detectors give concentration-dependent signals?

All of these
Thermal conductivity
Infra-red detector
Electron-capture detector

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Gas Chromatography
Sample retention in the column is measured by

retention index
retention time
all of these
retention factor

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Gas Chromatography
Which of these effects result from slow injection of a large sample volume?

Increased resolution
Constant resolution
Non-linear detector response
Decreased resolution

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

Flame ionisation
NMR
Infrared spectroscopy
Electrical conductivity

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Gas Chromatography
Which of the following detectors give mass flow-dependent signals?

Thermal conductivity detector
All of these
Electron capture detector
Field ionisation detector

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