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 Which of the following detectors give mass flow-dependent signals? All of these Field ionisation detector Electron capture detector Thermal conductivity detector All of these Field ionisation detector Electron capture detector Thermal conductivity detector ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Split injection is carried out by splitting off some of the sample so that it does not enter the column splitting the sample into smaller portions to inject sequentially splitting the sample into smaller portions to inject at the same time through parallel ports None of these splitting off some of the sample so that it does not enter the column splitting the sample into smaller portions to inject sequentially splitting the sample into smaller portions to inject at the same time through parallel ports None of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give concentration-dependent signals? Infra-red detector All of these Thermal conductivity Electron-capture detector Infra-red detector All of these Thermal conductivity Electron-capture detector ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Column bleeding occurs when traces of the stationary phase are eluted the column is cracked and stationary phase leaks out the column breaks during installation and causes personal injury elution of the analyte is extended over time traces of the stationary phase are eluted the column is cracked and stationary phase leaks out the column breaks during installation and causes personal injury elution of the analyte is extended over time ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography A retention gap is placed between the injector and the front of the column to retain contaminants and prevent them from reaching the column prevent backflush of the injected solution retain the sample and release it gradually to the column All of these retain contaminants and prevent them from reaching the column prevent backflush of the injected solution retain the sample and release it gradually to the column All of these ANSWER DOWNLOAD EXAMIANS APP
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