Gas Chromatography Which of the following gases is unsuitable for use as a GC carrier gas? Helium Nitrogen All of these Oxygen Helium Nitrogen All of these Oxygen ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the retention factor, k', describe? The migration rate of an analyte through a column All of these The distribution of an analyte between the stationary and the mobile phase The velocity of the mobile phase The migration rate of an analyte through a column All of these The distribution of an analyte between the stationary and the mobile phase The velocity of the mobile phase ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Derivatisation of a sample is carried out to increase the detector response All of these 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 ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What are the benefits of decreasing the column internal diameter? Increased resolution Reduced risk of column overloading All of these Increased sample capacity Increased resolution Reduced risk of column overloading All of these Increased sample capacity ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of these effects result from slow injection of a large sample volume? Non-linear detector response Increased resolution Constant resolution Decreased resolution Non-linear detector response Increased resolution Constant resolution Decreased resolution ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Doubling the column's length increases resolution by a factor of 2 3 (2)0.5 4 2 3 (2)0.5 4 ANSWER DOWNLOAD EXAMIANS APP
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