of the ion :8- The trend of ions separation in the IEC depends on thed) adsorptiona) sizeb) chargec) polarity9- Capillary columns are sometimes preferred in gas chromatography over packed columnsbecause they:(a) Are easier to prepare in the laboratory.(b) Prevent detector overloading.(c) Permit easier injection.(d) Have higher resolving power10- Which is the most suitable technique to separate the following three ions from oneanother: Fluoride (F-), Nitrate (NO3), and Phosphate (PO4³-)?a) IEC b) SEC c) NP-HPLC d) GC e) RP-HPLC11- Which one of the followings is the universal detector used in GC ?a) Fluorescenceb) IRc) FIDd) ECD12- The column is heated in G.C to:A. prevent analyte condensation within the columnB. control elution rateD. all of the above mentionedC. reduce band broadening to get sharper peaks13- Which of the following detectors is widely used to detect environmentalsamples like chlorinated pesticides and polychlorinated biphenyls?A. Flame ionization detectorB. Thermal conductivity detectorC. Argon ionization detector D. Electron capture detector14. In GC, the retention of the analytes is depend upon:A. The column typeB.The type of detector usedC. The analyte size and chargeD. The boiling point and polarity of analyte15. In this chromatographic technique, there is no binding or interaction of analyte(sample) with stationary phase, what is this technique?A. SECB. GCC. HPLCD. IEC16. In this chromatographic technique the mobile should consists of buffer solution or withknown high ionic strengthA. GC-MS B. RP-HPLC C. IECD. NP-HPLC 1- To purify the mobile phase gas in GC we commonly use:a) IEC b) adsorption c) partition d) traps2- In capillary columns the stationary phase is:(a) packed in the capillary.(b) coated inside the capillary.(d) isocratic liquid(c) gradient liquid.3- The strongest functional group in anionic ion exchange chromatography is:a) carboxylic acid groupb) sulphonic acid groupc) primary amined) quaternary amine4- In gas chromatography, the best detector for quantification and identification of organiccompounds isa) Flourescence b) UV-Vis c) Diode-array d) Mass-spectrometer5- deionization of water from anions and cations in the industrial field can be carriedby:a)SECb) HPLCc) IECd) recrystallization6-is used for low concentration samples injection in GC.a) injection modeb) spilit mode c) spilitless mode d) reverse phase mode7- The most common carrier gases in GC area) Ne, H2, He b) H2, CH4, Nec) N2, He, Atd) He, N2, Xe

Note: Here you asked multiple questions in a image, So according to guidelines here is a solution to…

1- To purify the mobile phase gas in GC we commonly use: a) IEC b) adsorption c) partition d) traps 2- In capillary columns the stationary phase is: (a) packed in the capillary. (b) coated inside the capillary. (d) isocratic liquid (c) gradient liquid. 3- The strongest functional group in anionic ion exchange chromatography is: a) carboxylic acid group b) sulphonic acid group d) quaternary amine c) primary amine 4- In gas chromatography, the best detector for quantification and identification of organic compounds is a) Elourescence b) UV-Vis c) Diode-array d) Mass-spectrometer 5- deionization of water from anions and cations in the industrial field can be carried by: a) SEC b) HPLC c) IEC d) recrystallization 6- is used for low concentration samples injection in GC. a) injection mode b) spilit mode c) spilitless mode d) reverse phase mode 7- The most common carrier gases in GC are a) Ne. H₂. He b) H2, CH4. Ne c) N₂. He. Ar. d) He. N₂. Xe

1- To purify the mobile phase gas in GC we commonly use: a) IEC b) adsorption c) partition d) traps 2- In capillary columns the stationary phase is: (a) packed in the capillary. (b) coated inside the capillary. (d) isocratic liquid (c) gradient liquid. 3- The strongest functional group in anionic ion exchange chromatography is: a) carboxylic acid group b) sulphonic acid group d) quaternary amine c) primary amine 4- In gas chromatography, the best detector for quantification and identification of organic compounds is a) Elourescence b) UV-Vis c) Diode-array d) Mass-spectrometer 5- deionization of water from anions and cations in the industrial field can be carried by: a) SEC b) HPLC c) IEC d) recrystallization 6- is used for low concentration samples injection in GC. a) injection mode b) spilit mode c) spilitless mode d) reverse phase mode 7- The most common carrier gases in GC are a) Ne. H₂. He b) H2, CH4. Ne c) N₂. He. Ar. d) He. N₂. Xe

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter88: Column Chromatography

Section: Chapter Questions

Problem 5P

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