Gas Chromatography Sample injection is considered successful if the sample is homogenously spread along the column the sample is concentrated at the start of 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 homogenously spread along the column the sample is concentrated at the start of the column all of the sample in the injector has been added to the column the sample is spread evenly along the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Doubling the column's length increases resolution by a factor of 3 (2)0.5 4 2 3 (2)0.5 4 2 ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What useful information can be found from a Van Deemter plot? The selectivity factor Optimum mobile phase flow rate Optimum column length Optimum column temperature The selectivity factor Optimum mobile phase flow rate Optimum column length Optimum column temperature ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the selectivity factor describe? The relative separation achieved between two species None of these The proportional difference in widths of two chromatographic peaks The maximum number of different species which a column can separate simultaneously The relative separation achieved between two species None of these The proportional difference in widths of two chromatographic peaks The maximum number of different species which a column can separate simultaneously ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give mass flow-dependent signals? All of these Thermal conductivity detector Field ionisation detector Electron capture detector All of these Thermal conductivity detector Field ionisation detector Electron capture detector ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Resolution is proportional to the square of the number of theoretical plates in a column square root of the number of theoretical plates in a column number of theoretical plates in a column cube root of the number of theoretical plates in a column square of the number of theoretical plates in a column square root of the number of theoretical plates in a column number of theoretical plates in a column cube root of the number of theoretical plates in a column ANSWER DOWNLOAD EXAMIANS APP
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