Gas Chromatography Sample injection is considered successful if all of the sample in the injector has been added to the column the sample is spread evenly along the column the sample is concentrated at the start of the column the sample is homogenously spread along the column all of the sample in the injector has been added to the column the sample is spread evenly along the column the sample is concentrated at the start of the column the sample is homogenously spread along the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following are not used as stationary phases in a GC column? Cyclodextrins Silica None are used as stationary phases Polysiloxanes Cyclodextrins Silica None are used as stationary phases Polysiloxanes ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography The column is heated to control elution of the different analytes all of these reduce band broadening to get sharper peaks prevent analyte condensation within the column control elution of the different analytes all of these reduce band broadening to get sharper peaks prevent analyte condensation within the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of these effects result from slow injection of a large sample volume? Decreased resolution Increased resolution Constant resolution Non-linear detector response Decreased resolution Increased resolution Constant resolution Non-linear detector response ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give mass flow-dependent signals? Field ionisation detector Thermal conductivity detector Electron capture detector All of these Field ionisation detector Thermal conductivity detector Electron capture detector All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following gases is unsuitable for use as a GC carrier gas? Nitrogen All of these Helium Oxygen Nitrogen All of these Helium Oxygen ANSWER DOWNLOAD EXAMIANS APP
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