Gas Chromatography What useful information can be found from a Van Deemter plot? Optimum mobile phase flow rate Optimum column temperature Optimum column length The selectivity factor Optimum mobile phase flow rate Optimum column temperature Optimum column length The selectivity factor ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What are the benefits of decreasing the column internal diameter? Increased resolution Reduced risk of column overloading Increased sample capacity All of these Increased resolution Reduced risk of column overloading Increased sample capacity All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Split injection is carried out by splitting the sample into smaller portions to inject at the same time through parallel ports splitting the sample into smaller portions to inject sequentially None of these splitting off some of the sample so that it does not enter the column splitting the sample into smaller portions to inject at the same time through parallel ports splitting the sample into smaller portions to inject sequentially None of these splitting off some of the sample so that it does not enter the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Resolution is proportional to the number of theoretical plates in a column square root of the number of theoretical plates in a column square of the number of theoretical plates in a column cube root of the number of theoretical plates in a column number of theoretical plates in a column square root of the number of theoretical plates in a column square of the number of theoretical plates in a column cube root of the number of theoretical plates in a column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Theoretical plates are used to None of these determine the thickness of the stationary phase measure the distribution of the analyte between mobile and stationary phases estimate the efficiency of a column None of these determine the thickness of the stationary phase measure the distribution of the analyte between mobile and stationary phases estimate the efficiency of a column 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 retain the sample and release it gradually to the column All of these prevent backflush of the injected solution retain contaminants and prevent them from reaching the column retain the sample and release it gradually to the column All of these prevent backflush of the injected solution ANSWER DOWNLOAD EXAMIANS APP
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