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 Which of the following gases is unsuitable for use as a GC carrier gas? Helium Nitrogen Oxygen All of these Helium Nitrogen Oxygen All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Derivatisation of a sample is carried out to reduce polarity of the analytes increase volatility of the analytes increase the detector response All of these reduce polarity of the analytes increase volatility of the analytes increase the detector response All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following are not used as stationary phases in a GC column? None are used as stationary phases Cyclodextrins Polysiloxanes Silica None are used as stationary phases Cyclodextrins Polysiloxanes Silica ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Doubling the column's length increases resolution by a factor of 2 (2)0.5 4 3 2 (2)0.5 4 3 ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the statements is correct? Gas chromatography is used to analyse solids All of these Gas chromatography is used to analyse gases, solutions and solids Gas chromatography is used to analyse gases Gas chromatography is used to analyse solids All of these Gas chromatography is used to analyse gases, solutions and solids Gas chromatography is used to analyse gases ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS