Gas Chromatography Derivatisation of a sample is carried out to reduce polarity of the analytes All of these increase volatility of the analytes increase the detector response reduce polarity of the analytes All of these increase volatility of the analytes increase the detector response 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 Which of the following gases is unsuitable for use as a GC carrier gas? Nitrogen All of these Helium Oxygen Nitrogen All of these Helium Oxygen ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give concentration-dependent signals? Electron-capture detector Thermal conductivity Infra-red detector All of these Electron-capture detector Thermal conductivity Infra-red detector All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following is not used for detection in GC? Infrared spectroscopy Flame ionisation Electrical conductivity NMR Infrared spectroscopy Flame ionisation Electrical conductivity NMR ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography The GC trace obtained after an experiment is called a chromatogram chromatophore graph chromatograph chromatogram chromatophore graph chromatograph ANSWER DOWNLOAD EXAMIANS APP
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