FSC Part 1 Chemistry Chapter 2 Experimental Techniques in Chemistry Online Test | ilmkidunya

Chemistry Fsc Part 1 Chapter 2 Online Test

Sr. #	Questions	Answers Choice
1	Chromatographic technique is very useful for	Isolation Purification separation All of them
2	Large value of distribution coefficient K means.	Component of solute dissolved large in mobile phase Components of solute do not dissolve in mobile phase Components of solute remains at original spot All statements are correct
3	The paper at which separation of solute have been taken place is called.	Retardation factor Chromatogram Base line Solvent front
4	Chromatography in which stationary phase is a solid is called.	Partition chromatography Paper chromatography High pressure liquid chromatography Adsorption chromatography
5	Chromatography involves the distribution of a solute between.	Two stationary phases Two mobile phases A stationary phase and a mobile phase Two stationary and two mobile phase.
6	To achieve a good separation, the two liquids are gently shaken to increase their area of.	Miscibility Separation contact Solubility
7	Repeated extraction using small portions of solvent are more.	Accurate efficient Slow Rapid
8	In solvent extraction, solute can be separated from solution, by shaking the solution with solvent in which the solute is.	More soluble Partially soluble Insoluble soluble at high temp
9	Which one of the following substances is not sublime material.	Iodine Benzoic acid Ammonium chloride Potash alum
10	The components of which mixture can be separated by sublimation.	NaCl and Ca cl2 Is and water Sand and Naphthalene Blue and red inks
11	Safe and reliable method of drying crystals is through.	Pressing it between folds of filter paper Drying it in oven Evaporation of solution Vacuum desiccator
12	Which of the following substances is used as decolorizing agent.	Silica gel Animal charcoal conc. H2SO4 Asbestos
13	Which one of the following substances is not used as drying agent in desiccators.	Calcium chloride Phosphorus pentoxide Silica gel 50% NaCl
14	Which one of the following is not property of a good solvent.	It should be inexpensive It should dissolve impurities easily It should dissolve large amount of solute at boiling point and less amount of solute at low temperature. It should not react chemically with solute
15	Which one of the following methods will be used to separate the mixture of NaCl and sand.	Chromatography Solvent extraction Sublimation Filtration
16	Several types of filter media are used for filtration depending on	Natural of reactants Nature of reaction Size of precipitate Nature of filter paper
17	In chromatographic technique. Rf has unit.	Mol dm-3 Cm m3 No units

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