Gas Chromatography Which of the following gases is unsuitable for use as a GC carrier gas? Oxygen Nitrogen Helium All of these Oxygen Nitrogen Helium All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography In column switching chromatography any of the above the flow to the column is switched on and off repeatedly compounds trapped on one column are eluted to another column one column is removed and replaced by another any of the above the flow to the column is switched on and off repeatedly compounds trapped on one column are eluted to another column one column is removed and replaced by another ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What useful information can be found from a Van Deemter plot? Optimum mobile phase flow rate Optimum column temperature The selectivity factor Optimum column length Optimum mobile phase flow rate Optimum column temperature The selectivity factor Optimum column length ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give mass flow-dependent signals? Thermal conductivity detector Field ionisation detector All of these Electron capture detector Thermal conductivity detector Field ionisation detector All of these Electron capture detector ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of these effects result from slow injection of a large sample volume? Non-linear detector response Decreased resolution Constant resolution Increased resolution Non-linear detector response Decreased resolution Constant resolution Increased resolution ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Split injection is carried out by splitting the sample into smaller portions to inject sequentially splitting off some of the sample so that it does not enter the column None of these splitting the sample into smaller portions to inject at the same time through parallel ports splitting the sample into smaller portions to inject sequentially splitting off some of the sample so that it does not enter the column None of these splitting the sample into smaller portions to inject at the same time through parallel ports ANSWER DOWNLOAD EXAMIANS APP
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