301 The major steps involved in complete quantitative analysis are _________________? Chemistry Medium Full question → A 2 B 3 C 4 D 5
302 Which is not related pair of term used in analytical techniques________________? Chemistry Medium Full question → A Filtrate residue B Sublimate sublimation C Drying desiccator D Separating funnel mother liquor
303 Sintered glass is a porous material used for ___________________? Chemistry Medium Full question → A absorption B adsorption C filtration D sublimation
304 The solvent or mixture of solvents used for separation of compounds is called____________________? Chemistry Medium Full question → A Stationary phase B Mobile phase C Dynamic phase D Static phase
305 Silica gel and alumina are used as __________________? Chemistry Medium Full question → A Mobile phase B Stationary phase C Mixed phase D Single phase
306 Safe and the most reliable method of drying crystals is through_________________? Chemistry Medium Full question → A Filter paper B Vacuum desiccators C Oven D None of these
307 A process controlled by Distributive law is__________________? Chemistry Medium Full question → A Crystallization B Sublimation C Solvent extraction D Filtration
308 Different components of a mixture have different Rf values due to________________? Chemistry Medium Full question → A Polar solvent used B Combination of solvents used C Their different distribution coefficients in the solvent D Distributive law
309 Identification of the components of a sample is_________________? Chemistry Medium Full question → A Quantitative analysis B Qualitative analysis C Stoichiometry D Physical chemistry
310 The technique used to separate components of mixture in solid phase ? Chemistry Medium Full question → A Crystallization B Filtration C Sublimation D Solvent extraction
311 The tip of funnel should touch the wall of the breaker in order to avoid____________________? Chemistry Medium Full question → A Inconsistent flow of filtration B splashing C premature crystallization D all of above
312 Size of filter paper is selected according to the amount of__________________? Chemistry Medium Full question → A solution B amount of insoluble solute C amount of soluble solute D Amount of solvent
313 Rate of filtration can be increased by applying gentle suction______________? Chemistry Medium Full question → A Gooch crucible B Filter paper C Sintered crucible D All of the above
314 In crystallization if the solvent is inflammable then direct heating is________________? Chemistry Medium Full question → A needed B avoided C depends on temperature D crystallization does not involve heating
315 In solvent extraction ether is used to separate products of organic synthesis from________________? Chemistry Medium Full question → A water B iodine C hydrochloric acid D gases
316 The use of CaCl2 and PCl5 in the process of crystallization is as a____________________? Chemistry Medium Full question → A oxidizing agent B reducing agent C drying agent D colouring agent
317 Without suction pump filtration is __________________? Chemistry Medium Full question → A Fast process B Slow process C Rapid process D All are possible
318 Direct conversion of solids into vapours is called ___________________? Chemistry Medium Full question → A Solvent extraction B sublimation C crystallization D vaporization
319 In CCI4 I2 shows________________? Chemistry Medium Full question → A Red colour B Purple colour C Blue colour D Yellow colour
320 Crystallization does not involve_______________? Chemistry Medium Full question → A heating B sublimation C cooling D vaporization