MCQ on chromatography In which type of chromatography, the stationary phase is held in a narrow tube and the mobile phase is forced through it under pressure? Column chromatography Planar chromatography Liquid chromatography Gas chromatography In which chromatography stationary phase is more polar than mobile phase? Ion exchange chromatography Normal phase chromatography Reversed chromatography Size exclusion chromatography Which of the following guidelines are applicable to Analytical Method validation ICH Q1 ICH Q2 ICH Q3 ICH Q4 In thin layer chromatography, the stationary phase is made of _________ and the mobile phase is made of _________ Solid, liquid Liquid, liquid Liquid, gas Solid, gas Which of the following multicomponent analysis technique involves estimation of components that show change in spectra in different pH medium Simultaneous equation Derivative spectroscopy Q Absorbance ratio Difference spectroscopy In which of the following type of paper chromatography does the mobile phase move horizontally over a circular sheet of paper? Ascending paper chromatography Descending paper chromatography Radial paper chromatography Ascending – descending chromatography In size exclusion chromatography, solute molecules are separated based on _________ Molecular geometry and size Molecular composition Molecular phase Molecular formula Ion exchange chromatography is based on? Electrostatic attraction Electrical mobility of ionic species Partition chromatography Adsorption chromatography Which of the following is an example of bulk property or general detector in HPLC Fluorescence detector Refractive index detector Electrochemical detector UV-Visible detector Which of the following is used as a carrier gas in gas chromatography Carbon dioxide Oxygen Helium Methane 1H nuclei located near electronegative atoms tend to be ______ relative to 1H nuclei Shielded Deshielded Resonanced Split Signal splitting in NMR arises from? Shielding effect Spin-spin decoupling Spin-spin coupling Deshielding effecr The base peak in mass spectrum is? The lowest mass peak The peak corresponding to the parent ion The highest mass peak The peak set to 100% relative intensity Which one of the following is necessary for mass spectrometry to occur? Loss of an electron Change of alignment of a proton in a magnetic field A molecular vibration Excitation of an electron from the ground state to a higher energy state Column efficiency is measured in terms of number of theoretical plates, which is: Inversely related to square root of height equivalent to theoretical plates Directly related to square root of height equivalent to theoretical plates Directly related to height equivalent to theoretical plates Inversely related to height equivalent to theoretical plates In reverse phase HPLC, there is a Non-polar solvent/polar column Polar solvent/Non-polar column Polar solvent/Polar column Non-polar solvent/Non-polar column In a chromatographic separation, which of the following is most appropriate for the qualitative analysis of a substance? Taking factor Capacity factor Retention time Resolution The basis of the technique of chromatography for separating components of a mixture is? the differing movement of particles of different mass in an electrical field the interaction of the components with a stationary and a mobile phases the absorption of infrared radiation by the components. the deflection of charged particles in a magnetic field. HPLC is an abbreviation for? High Profit Liquid Chromatography High Pressure Liquid Chromatography Higher Performance Low Chromatography Higher Profit Low Chromatography The base value for the following compound is 214 253 217 202 In IR spectroscopy, the wavenumber for nitrile group is observed in the range of 3500-3300 cm-1 2200-2100 cm-1 1740-1650 cm-1 3000-2800 cm-1 Which of the following techniques would be most useful to identify as well as quantify the presence of a known impurity in a drug substance? NMR MS IR HPLC The results for precision studies in Analytical Method Validation, are expressed in terms of? % Relative error Correlation coefficient % Relative standard deviation Mean Which of the following is used as a spraying reagent in paper chromatography? conc. HCl NaCl solution Ninhydrin solution CuSO4 solution In mass spectrometry, fragmentation of ions is achieved through? Ionization Splitting Solubilization Coupling Please fill in the comment box below. Time's up
