Gas Chromatography What does the selectivity factor describe? The maximum number of different species which a column can separate simultaneously None of these The proportional difference in widths of two chromatographic peaks The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously None of these The proportional difference in widths of two chromatographic peaks The relative separation achieved between two species ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following gases is unsuitable for use as a GC carrier gas? Oxygen Helium Nitrogen All of these Oxygen Helium Nitrogen All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the retention factor, k', describe? The velocity of the mobile phase The distribution of an analyte between the stationary and the mobile phase All of these The migration rate of an analyte through a column The velocity of the mobile phase The distribution of an analyte between the stationary and the mobile phase All of these The migration rate of an analyte through a column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Column bleeding occurs when the column is cracked and stationary phase leaks out the column breaks during installation and causes personal injury elution of the analyte is extended over time traces of the stationary phase are eluted the column is cracked and stationary phase leaks out the column breaks during installation and causes personal injury elution of the analyte is extended over time traces of the stationary phase are eluted ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the statements is correct? Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases All of these Gas chromatography is used to analyse gases, solutions and solids Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases All of these Gas chromatography is used to analyse gases, solutions and solids ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What useful information can be found from a Van Deemter plot? Optimum column temperature Optimum column length Optimum mobile phase flow rate The selectivity factor Optimum column temperature Optimum column length Optimum mobile phase flow rate The selectivity factor ANSWER DOWNLOAD EXAMIANS APP
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