Gas Chromatography Which of the following are not used as stationary phases in a GC column? None are used as stationary phases Cyclodextrins Silica Polysiloxanes None are used as stationary phases Cyclodextrins Silica Polysiloxanes ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Helium is generally preferred as carrier gas over nitrogen and hydrogen because it has a lower viscosity it is inert it doubles up as a party gas for balloons and funny voices all of above it has a lower viscosity it is inert it doubles up as a party gas for balloons and funny voices all of above ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What are the benefits of decreasing the column internal diameter? All of these Increased resolution Reduced risk of column overloading Increased sample capacity All of these Increased resolution Reduced risk of column overloading Increased sample capacity ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following gases is unsuitable for use as a GC carrier gas? Nitrogen Helium All of these Oxygen Nitrogen Helium All of these Oxygen ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Derivatisation of a sample is carried out to reduce polarity of the analytes increase the detector response All of these increase volatility of the analytes reduce polarity of the analytes increase the detector response All of these increase volatility of the analytes ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What is the typical internal diameter of fused silica capillary columns? 0.2-0.3 mm 1.0-2.0 mm 0.5-1.0 mm 0.3-0.5mm 0.2-0.3 mm 1.0-2.0 mm 0.5-1.0 mm 0.3-0.5mm ANSWER DOWNLOAD EXAMIANS APP
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