Gas Chromatography Which of the following is not used for detection in GC? NMR Electrical conductivity Infrared spectroscopy Flame ionisation NMR Electrical conductivity Infrared spectroscopy Flame ionisation ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the statements is correct? All of these Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases Gas chromatography is used to analyse gases, solutions and solids All of these Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases Gas chromatography is used to analyse gases, solutions and solids ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the selectivity factor describe? None of these The maximum number of different species which a column can separate simultaneously The relative separation achieved between two species The proportional difference in widths of two chromatographic peaks None of these The maximum number of different species which a column can separate simultaneously The relative separation achieved between two species The proportional difference in widths of two chromatographic peaks ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample injection is considered successful if the sample is homogenously spread along the column the sample is spread evenly along the column all of the sample in the injector has been added to the column the sample is concentrated at the start of the column the sample is homogenously spread along the column the sample is spread evenly along the column all of the sample in the injector has been added to the column the sample is concentrated at the start of the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Derivatisation of a sample is carried out to All of these increase the detector response increase volatility of the analytes reduce polarity of the analytes All of these increase the detector response increase volatility of the analytes reduce polarity of the analytes ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Theoretical plates are used to measure the distribution of the analyte between mobile and stationary phases determine the thickness of the stationary phase None of these estimate the efficiency of a column measure the distribution of the analyte between mobile and stationary phases determine the thickness of the stationary phase None of these estimate the efficiency of a column ANSWER DOWNLOAD EXAMIANS APP
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