Gas Chromatography What useful information can be found from a Van Deemter plot? 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 The selectivity factor ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the statements is correct? 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 Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the retention factor, k', describe? The migration rate of an analyte through a column The distribution of an analyte between the stationary and the mobile phase All of these The velocity of the mobile phase The migration rate of an analyte through a column The distribution of an analyte between the stationary and the mobile phase All of these The velocity of the mobile phase 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 The GC trace obtained after an experiment is called a graph chromatogram chromatograph chromatophore graph chromatogram chromatograph chromatophore ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample retention in the column is measured by retention time retention factor retention index all of these retention time retention factor retention index all of these ANSWER DOWNLOAD EXAMIANS APP
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