Gas Chromatography Which of the statements is correct? All of these Gas chromatography is used to analyse gases Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases, solutions and solids All of these Gas chromatography is used to analyse gases Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases, solutions and solids ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the selectivity factor describe? The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography A retention gap is placed between the injector and the front of the column to retain contaminants and prevent them from reaching the column prevent backflush of the injected solution All of these retain the sample and release it gradually to the column retain contaminants and prevent them from reaching the column prevent backflush of the injected solution All of these retain the sample and release it gradually to the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Theoretical plates are used to measure the distribution of the analyte between mobile and stationary phases None of these estimate the efficiency of a column determine the thickness of the stationary phase measure the distribution of the analyte between mobile and stationary phases None of these estimate the efficiency of a column determine the thickness of the stationary phase ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following gases is unsuitable for use as a GC carrier gas? All of these Oxygen Helium Nitrogen All of these Oxygen Helium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Doubling the column's length increases resolution by a factor of 3 2 4 (2)0.5 3 2 4 (2)0.5 ANSWER DOWNLOAD EXAMIANS APP
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