Gas Chromatography A retention gap is placed between the injector and the front of the column to prevent backflush of the injected solution All of these retain contaminants and prevent them from reaching the column retain the sample and release it gradually to the column prevent backflush of the injected solution All of these retain contaminants and prevent them from reaching the column retain the sample and release it gradually to the column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample injection is considered successful if all of the sample in the injector has been added to the column the sample is spread evenly along the column the sample is concentrated at the start of the column the sample is homogenously spread along the column all of the sample in the injector has been added to the column the sample is spread evenly along the column the sample is concentrated at the start of the column the sample is homogenously spread along the column 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
Gas Chromatography Theoretical plates are used to measure the distribution of the analyte between mobile and stationary phases None of these estimate the efficiency of a column determine the thickness of the stationary phase measure the distribution of the analyte between mobile and stationary phases None of these estimate the efficiency of a column determine the thickness of the stationary phase ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the statements is correct? Gas chromatography is used to analyse gases, solutions and solids All of these Gas chromatography is used to analyse gases Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases, solutions and solids All of these Gas chromatography is used to analyse gases Gas chromatography is used to analyse solids ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give concentration-dependent signals? Infra-red detector Thermal conductivity Electron-capture detector All of these Infra-red detector Thermal conductivity Electron-capture detector All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS