Gas Chromatography Headspace analysis is carried out in order to analyse volatile compounds from solid or liquid samples determine the psychological state of the tutor determine non-volatiles analyse the column contents ahead of the sample analyse volatile compounds from solid or liquid samples determine the psychological state of the tutor determine non-volatiles analyse the column contents ahead of the sample 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 Sample retention in the column is measured by all of these retention index retention factor retention time all of these retention index retention factor retention time ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the selectivity factor describe? The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography In column switching chromatography compounds trapped on one column are eluted to another column the flow to the column is switched on and off repeatedly any of the above one column is removed and replaced by another compounds trapped on one column are eluted to another column the flow to the column is switched on and off repeatedly any of the above one column is removed and replaced by another ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following gases is unsuitable for use as a GC carrier gas? Helium All of these Nitrogen Oxygen Helium All of these Nitrogen Oxygen ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS