Gas Chromatography Which of the following is not used for detection in GC? Electrical conductivity Flame ionisation NMR Infrared spectroscopy Electrical conductivity Flame ionisation NMR Infrared spectroscopy ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography In column switching chromatography any of the above one column is removed and replaced by another the flow to the column is switched on and off repeatedly compounds trapped on one column are eluted to another column any of the above one column is removed and replaced by another the flow to the column is switched on and off repeatedly compounds trapped on one column are eluted to another column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Resolution is proportional to the square root 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 of the number of theoretical plates in a column square root 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 of the number of theoretical plates in a column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Theoretical plates are used to estimate the efficiency of a column None of these measure the distribution of the analyte between mobile and stationary phases determine the thickness of the stationary phase estimate the efficiency of a column None of these measure the distribution of the analyte between mobile and stationary phases determine the thickness of the stationary phase ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the retention factor, k', describe? All of these The velocity of the mobile phase The distribution of an analyte between the stationary and the mobile phase The migration rate of an analyte through a column All of these The velocity of the mobile phase The distribution of an analyte between the stationary and the mobile phase The migration rate of an analyte through a column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of these effects result from slow injection of a large sample volume? Constant resolution Decreased resolution Non-linear detector response Increased resolution Constant resolution Decreased resolution Non-linear detector response Increased resolution ANSWER DOWNLOAD EXAMIANS APP
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