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Home⇒ Medical Science⇒ Biochemistry⇒ Gas chromatography
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ What useful information can be found from a Van Deemter plot? Optimum mobile phase flow rate [other wrong options] [Discuss in forum] The selectivity factor Optimum column temperature Optimum column length |
Q22 ⇒ What are the benefits of decreasing the column internal diameter? Increased resolution [other wrong options] [Discuss in forum] Increased sample capacity Reduced risk of column overloading All of the above |
Q23 ⇒ Split injection is carried out by splitting off some of the sample so that it does not enter the column [other wrong options] [Discuss in forum] 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 the above |
Q24 ⇒ Which of the following are not used as stationary phases in a GC column? Silica [other wrong options] [Discuss in forum] Polysiloxanes Cyclodextrins None are used as stationary phases |
Q25 ⇒ Which of the statements is correct? All of the above [other wrong options] [Discuss in forum] Gas chromatography is used to analyse gases Gas chromatography is used to analyse solids Gas chromatography is used to analyse gases, solutions and solids |
Q26 ⇒ Helium is generally preferred as carrier gas over nitrogen and hydrogen because all of above [other wrong options] [Discuss in forum] it is inert it has a lower viscosity it doubles up as a party gas for balloons and funny voices |
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