321 Animal charcoal adsorbs the coloured_________________? Chemistry Medium Full question → A impurities B crystals C solvents D both A & B
322 Ratio of the amount of solute in organic and aqueous solvent is________________? Chemistry Medium Full question → A Retardation factor B Distribution co-efficient C Distribution in aqueous solution D All statements are wrong
323 95% ethanol is called_________________? Chemistry Medium Full question → A methylated spirit B wood spirit C rectified spirit D absolute alcohol
324 Which of the following technique is simple and efficient to purify a substance____________________? Chemistry Medium Full question → A Filtration B Sublimation C Crystallization D Solvent extraction
325 Separation of a solid from its hot saturated solution by cooling is called__________________? Chemistry Medium Full question → A vapourization B solvent extraction C filtration D crystallization
326 Sintered crucible is made up of________________? Chemistry Medium Full question → A Plastic B glass C porcetain D fiber
327 Gooch Crucibles are made up of________________? Chemistry Medium Full question → A plastic B fibre C porcelain D steel
328 The solid which is left over the filter paper as a result of filtration_________________? Chemistry Medium Full question → A Insoluble particles B residue C crystals D mud
329 Estimation of amounts of different components in a sample is________________? Chemistry Medium Full question → A Quantitative analysis B Qualitative analysis C Stochiometery D Physical chemistry
330 Branch of chemistry that deals with the complete qualitative and quantitative analysis of a substance is___________________? Chemistry Medium Full question → A Stoichio chemistry B Physical chemistry C Analytical chemistry D Quantum chemistry
331 A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________? Chemistry Medium Full question → A Adsorption chromatography B Ascending chromatography C Radial chromatography D Descending chromatography
332 A substance having very high vapour pressure at its melting point on heating will show_______________? Chemistry Medium Full question → A Melting B Sublimation C Decomposition D Condensation
333 Fluted filter paper is used to__________________? Chemistry Medium Full question → A Filter hot solution B Avoid premature crystallization C Increase the rate of filtration D Decrease the area
334 Which of the following technique is used for the separation of insoluble particles from liquids ? Chemistry Medium Full question → A Filtration B Crystallization C Solvent extraction D Chromatography
335 Which of the following way in used for classification of chromatography ? Chemistry Medium Full question → A Shape B Phase C Mechanism D All
336 Neutrons moving with an energy of 1.2 MeV are called_______________? Chemistry Medium Full question → A Fast neutrons B Slow neutrons C Moderate neutrons D All are possible
337 When 6d orbital is complete the entering electron goes into_________________? Chemistry Medium Full question → A 7f B 7s C 7p D 7d
338 Centrifugal forces are balanced in atom by__________________? Chemistry Medium Full question → A Attractive forces B Repulsive force C Electrons D Neutrons
339 _______________ can expel proteons from paraffins ? Chemistry Medium Full question → A Electron B Positron C Neutron D None of above has such capability
340 Quantum number which tells the energy of electron is________________? Chemistry Medium Full question → A n B 1 C m D s