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Q.2 Choose the correct answer from the following? 1- In all chromatographie separations the sample is transported in a mobile phase, which may be . ............ a. a gas, or a supercritical fluid. b. a gas, a solid, or a supercritical fluid. e. a gas, a liquid, or a supercritical fluid. d. a gas, or a liquid. 2- Ir the components strongly retained by the stationary phase then it will . * a. move slowly with the flow of mobile phase and elute later b. move fast with the flow of mobile phase and elute later move fast with the flow of mobile phase and elute early c. d. move slowly with the flow of mobile phase and elute carly 3- The equilibrium constant, Ke for chromatography reaction is called the ...... ........... a. distribution constant, c. the partition coefficient b. the partition ratio d. All are correct In GC the sample size can be.. . a. 1-20 mL packed column and 10 mL capillary column 4- b. 1-20 pL packed column and 10 uL capillary column c. 1-20 µL capillary column and 10 uL packed column d. All are correct ................ 5- The Split injection in the gas chromatography is.... a. all sample to column only for trace analysis, low [sample] risk of backflash b. for samples that decompose above boiling point no heated injection port c. routine method 0.1-1 % sample to column remainder to waste d. All are correct

Q.2 Choose the correct answer from the following? 1- In all chromatographie separations the sample is transported in a mobile phase, which may be . ............ a. a gas, or a supercritical fluid. b. a gas, a solid, or a supercritical fluid. e. a gas, a liquid, or a supercritical fluid. d. a gas, or a liquid. 2- Ir the components strongly retained by the stationary phase then it will . * a. move slowly with the flow of mobile phase and elute later b. move fast with the flow of mobile phase and elute later move fast with the flow of mobile phase and elute early c. d. move slowly with the flow of mobile phase and elute carly 3- The equilibrium constant, Ke for chromatography reaction is called the ...... ........... a. distribution constant, c. the partition coefficient b. the partition ratio d. All are correct In GC the sample size can be.. . a. 1-20 mL packed column and 10 mL capillary column 4- b. 1-20 pL packed column and 10 uL capillary column c. 1-20 µL capillary column and 10 uL packed column d. All are correct ................ 5- The Split injection in the gas chromatography is.... a. all sample to column only for trace analysis, low [sample] risk of backflash b. for samples that decompose above boiling point no heated injection port c. routine method 0.1-1 % sample to column remainder to waste d. All are correct

Appl Of Ms Excel In Analytical Chemistry
Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter14: Chromatography
Section: Chapter Questions
Problem 9P
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Q.2 Choose the correct answer from the following? 1- In all chromatographie separations the sample is transported in a mobile phase, which may be .. * a. a gas, or a supercritical fluid. b. a gas, a solid, or a supercritical fluid. e. a gas, a liquid, or a supercritical fuid. d. a gas, or a liquid. 2- If the components strongly retained by the stationary phase then it will a. move slowly with the flow of mobile phasc and elute later b. move fast with the flow of mobile phase and elute later c. move fast with the flow of mobile phase and elute early d. move slowly with the flow of mobile phase and elute carly 3- The equilibrium constant, Kc for chromatography reaction is called the ... ......... a. distribution constant, c. the partition coefficient b. the partition ratio d. All are correct 4- In GC the sample size can be.. .. a. 1-20 mL packed column and 10 mL capillary column b. 1-20 µL packed column and 103 uL capillary column c. 1-20 µL capillary column and l10 uL packed column d. All are correct .............. 5- The Split injection in the gas chromatography is.... a. all sample to column only for trace analysis, low [sample] risk of backflash b. for samples that decompose above boiling point no heated injection port c. routine method 0.1-1 % sample to column remainder to waste d. All are correct
Transcribed Image Text:Q.2 Choose the correct answer from the following? 1- In all chromatographie separations the sample is transported in a mobile phase, which may be .. * a. a gas, or a supercritical fluid. b. a gas, a solid, or a supercritical fluid. e. a gas, a liquid, or a supercritical fuid. d. a gas, or a liquid. 2- If the components strongly retained by the stationary phase then it will a. move slowly with the flow of mobile phasc and elute later b. move fast with the flow of mobile phase and elute later c. move fast with the flow of mobile phase and elute early d. move slowly with the flow of mobile phase and elute carly 3- The equilibrium constant, Kc for chromatography reaction is called the ... ......... a. distribution constant, c. the partition coefficient b. the partition ratio d. All are correct 4- In GC the sample size can be.. .. a. 1-20 mL packed column and 10 mL capillary column b. 1-20 µL packed column and 103 uL capillary column c. 1-20 µL capillary column and l10 uL packed column d. All are correct .............. 5- The Split injection in the gas chromatography is.... a. all sample to column only for trace analysis, low [sample] risk of backflash b. for samples that decompose above boiling point no heated injection port c. routine method 0.1-1 % sample to column remainder to waste d. All are correct
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