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G GAMMA Tutorial, , , , Test ID : PH6 UNIT: QUANTITATIVE ANALYSIS Date : 27/10/2021, CHROMATOGRAPHY, , 1, The principle on which thin layer chromatography is based on, a) Different compounds are absorbed on an absorbent to different degree, b) Different compounds are absorbed on an absorbent to same degree, c) Different compounds are adsorbed on an absorbent to different degree, d) Different compounds are adsorbed on an absorbent to same degree, , 2. The size of a thin layer of adsorbent is about, a) 0.Imm b) 0.2mm c) 0.3mm 4)0.4mm, , 3. The chromoplate are TLC plate is made up of, a) Glass b) wood c) fibre d) Metal, , 4, The relative adsorption of each components of the mixture is expressed in terms of its, a)Acceleration factor b) Retention factor —c) Both a) and b) d) None of these, , 5. Select the correct statement from the following, a) Paper chromatography is type of partition chromatography, b) A special quality paper is used in paper chromatography, c) Chromatography paper contains water trapped in it which acts as stationary phase, d) All of the above, , 6. Retardation factor is the ratio of, , a) Distance moved by substance from base line to distance moved by the solvent from, base line, , b) Distance moved by solvent from base line to distance moved by the substance from, base line, , c) Distance moved by substance from top line to distance moved by the solvent from top, line, , d) Distance moved by solvent from top line to distance moved by the substance from top, line, , 7. Chromatography is a physical method that is used to separate and analyse ...., , a) Simple mixtures b) Complex mixture —c) Viscous mixture —_d) Metals, , , , 8. In which type of chromatography, the stationary phase held in a narrow tube on the, mobile is forced through it under pressure ?, , , , 1

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a) column chromatography b) Planar chromatography, c) Liquid chromatography d) Gas chromatography, , 9, In chromatography, the stationery phase can be .......... supported on a solid, a) solid or liquid b) liquid or gas C) solid only d) liquid only, , 10.In chromatography, which of the following can the mobile phase be made of ?, a) Solid or liquid b) liquid or gas _C) Solid only d) liquid only, , 11. Which of the following cannot be used as an adsorbent in column adsorption, chromatography, , a) Magnesium oxide __ b) Silica gel, c) activated alumina —d) potassium permanganate, , 12.In column chromatography, the stationery phase is made up of ............ and the mobile, phase is made up of ......., a) Solid, liquid b) liquid, liquid c) Liquid, gas d) Solid, gas, , 13.1n which of the following, type of paper, chromatography does the mobile phase move, horizontally over a circular sheet of paper, a) Ascending paper chromatography, b) Descending chromatography, c) Radial paper chromatography, d) ascending and descending chromatography, , 14.Liquid chromatography can be performed in which of the following ways ?, a) only columns b) Only on plane surfaces, c) Either in columns or on plane of surfaces d) Neither in columns _nor on plane surface, , 15, Which of the following is not true about HPLC ?, a) It requires high pressure for the separation of specious, b) There is no need to vaporize the samples, ¢) It is performed in columns, d) It has high sensitivity, , 16.Which of the following types of chromatography involves the process , where the, mobile phase moves through the stationery phase by the influence of gravity or, capillary action ?, , a) Column chromatography b) HPLC, c) Gas chromatography d) Planar chromatography, 17.Which of the following is caused by careless handling ?, , a) Systematic error b) Gross error ¢) Random error d) None of the above, , nN)

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18.Which of the following error is caused by poor calibration of the instrument, , a) Random error b) Gross error c) Systematic error d) precision error, , 19.How systematic error are eliminated ?, a) frequent measurement b) replacement of instrument, , c) finding mean of reading d) Finding variance of reading, , 20.Which of the following represents an ST unit of luminous intensity ?, , a) Lumen b) Candela c) Dioptre d) None of the above, , 21.The error between mean of finite data set and mean of infinite data set is known as, , a) True error of the mean b) Standard error of the mean, ¢) finite error d) Infinite error, , 22.The basic principle of GLC are, a) Partition b) adsorption c) both a and b d) Absorption, , 23.In normal phase chromatography(HPLC) stationery phase and mobile phase used are, a) Non polar, polar b) Polar, non polar — c) Polar-polar —d) Nonpolar-Non polar, , 24.Find out the mean for the following 5,10, 15, a)5 b) 10 c) 1S d) 30, , 25.Find out the median for the following 2,6,4,8,10,7, a) 6.5 b)4 c)8 d) 12, , 26.Find out the median for the following 1,3,7,5,9, a)6 b)5 e)4 d)7, , 27.Find the F-value for the following having variance S:i=6 , S2= 3, a)3 b)4 c)9 d) 12, , 28.The adsorbent used in TLC plate, a) Charcoal b) Gelatin c) Compounds of chromium d) Silica gel, , 29.Basic principle of paper chromatography, a) Absorption b) Adsorption c) Partition d) Diffusion, , 30.1n paper chromatography , stationery phase consists of which component, a) Starch b) Cellulose c) Glycogen d) Amylopectin