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hich of the following components cannot be detected by gas chromatography? h) Volatile compounds

hich of the following components cannot be detected by gas chromatography? h) Volatile compounds

Fundamentals Of Analytical Chemistry
Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter8: Sampling, Standardization, And Calibration
Section: Chapter Questions
Problem 8.16QAP
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anch of the following components cannot be detected by gas chromatography? 4 Essential oils Alcohols b) Volatile compounds d) Non-volatile compounds 13- is measured as time elapsed from the point of injection to the peak maximum? a)-Column efficiency d)- Delectability c)-Retention time 14- Which of the following can be used to detect the components in gas chromatography a) non-volatile compounds b) volatile compounds c) Salts d) b&c 15-Which of the following methods is often referred to as mechanical separation processes. a)-Gas Chromatography b)-column chromatography c)- Sedimentation 16- For obtaining better resolution in TLC. and then developed with a second solvent at right angles to the first a) Stepwise b) Descending e) Ascending 17- This is defined as transport of electrically charged particles in a direct-current electric field a) ion exchange chromatography b) Electrophoresis c) ultracentrifuge d) exclusion 18-This figure indicates to schematic Diagram of a) Gas chromatography b) supercritical fluid chromatography c) high pressure liquid chromatography d) Capillary Electrochromatography d)-HPLC development is spotted in the normal manner 20-As shown in figure a Van Deemter plot What useful information can be found? a) Optimum column length b) Optimum mobile phase flow rate c) Optimum column temperature d) Optimum column height d) Two-dimensional La Puny 19- The electron capture detector in Gas chromatography can be used to detect? a) Halogenated compound bjaromatic compounds c) universal compound Lille d)-Rf Opten vey d)metals A typical Van Desmer plot Migrate Mobile phase velocity tR=tM (1+K') this equation to calculate the time a component takes to travel the length of e column (L), in which symbol K' indicates ? city factor b) separation factor c) number of theoretical plates d) width of pe
Transcribed Image Text:anch of the following components cannot be detected by gas chromatography? 4 Essential oils Alcohols b) Volatile compounds d) Non-volatile compounds 13- is measured as time elapsed from the point of injection to the peak maximum? a)-Column efficiency d)- Delectability c)-Retention time 14- Which of the following can be used to detect the components in gas chromatography a) non-volatile compounds b) volatile compounds c) Salts d) b&c 15-Which of the following methods is often referred to as mechanical separation processes. a)-Gas Chromatography b)-column chromatography c)- Sedimentation 16- For obtaining better resolution in TLC. and then developed with a second solvent at right angles to the first a) Stepwise b) Descending e) Ascending 17- This is defined as transport of electrically charged particles in a direct-current electric field a) ion exchange chromatography b) Electrophoresis c) ultracentrifuge d) exclusion 18-This figure indicates to schematic Diagram of a) Gas chromatography b) supercritical fluid chromatography c) high pressure liquid chromatography d) Capillary Electrochromatography d)-HPLC development is spotted in the normal manner 20-As shown in figure a Van Deemter plot What useful information can be found? a) Optimum column length b) Optimum mobile phase flow rate c) Optimum column temperature d) Optimum column height d) Two-dimensional La Puny 19- The electron capture detector in Gas chromatography can be used to detect? a) Halogenated compound bjaromatic compounds c) universal compound Lille d)-Rf Opten vey d)metals A typical Van Desmer plot Migrate Mobile phase velocity tR=tM (1+K') this equation to calculate the time a component takes to travel the length of e column (L), in which symbol K' indicates ? city factor b) separation factor c) number of theoretical plates d) width of pe
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