Quiz Hard 3 Categories Quizzes 0 Quiz Hard 3 1 / 30 The element having highest ionization energy and least electron affinity belongs to Period 2. group 2 Period 2, group 1 Period 1, group 18 Period 2. group 17 2 / 30 An impure sample of camphor, contaminated with sand, can be purified by None of the above Sublimation Steam distillation Chrotnawgraphy Distillation 3 / 30 The electronegativity of the follow, elements increases in the order F >CI >O> S S > Cl >O>F F >O> CI >S Cl > F>O> s 4 / 30 The reagent which can be react with 1- chlorobutane to give subsitution products is AlCl3 Mg/ether KOH-CH3OH NaCN 5 / 30 Phenol on reaction with ethanoic anhydride in the presence of sodium ethanoate give Phenyl methyl ether Ethyl benzoate Phenyl ethanoate Phenyl benzoate 6 / 30 In a period, the element with largest atomic volume belongs to group 17 group 1 group 18 group 2 7 / 30 The Langmuir theory of unimolecular adsorption is generally valid at High pressure and high tempratures Low pressure and high tempratures Low pressure and low temprature High pressure and low tempratures 8 / 30 Point out the incorrect statement Order of the reaction is equal to the sum of the exponents of concentration terms in the raw law Rate law is more informative than law of masa action Rate law is an experunenuil fact whereaa law of mats action In a theoretical in nature Rate law is always different from the expression of law of mass action 9 / 30 How many normal modes of vibration are possible for CO2 molecule? 4 1 3 2 10 / 30 The electrophile in the sulphonation of benzene is SO2 SO3H SO3 HSO4 11 / 30 The commonly used units for wavelength is All of the above Micrometre Angstrom Centimetre Nanometre 12 / 30 The most approprite reaction for conversion of bromobenzene to benzoic acid is Claisen-Schmidt reaction Reimer-Tiemann reaction Grignard reaction Kolbe-Schmidt reaction 13 / 30 The tyndall effect is not observed in emulsion suspension colloidal solutions true solutions 14 / 30 Polarising power of an ion is given by Ionic charge/lonic radius Ionic charge/(Ionic raditis)2 Ionic charge x (Ionic radian)2 'Ionic charge a Ionic radius 15 / 30 Conjugation of chromophore Lightens the colour Shifts absorptionto shorter wavelength All of these Deepens the colour 16 / 30 The stabilization of the dispersed phase lyophobic sol is due to The formation of an electrical layer between the two phases Liking for the dispersion medium The viscosity of the medium The surface tension of the medium 17 / 30 The light absorbed in IN and 'viaillle region causes Vibrational energy charges Rotationnl energy changes Electronic excitation All of these 18 / 30 Eosin dye belongs to the group of dyes known as Triphenylmethane dyes Phthalein dyes Nitroso dyes Diphenylmethane dyes 19 / 30 The hydrolysis of methyl acetate is a reaction of First order reaction zero order third order Second order reaction 20 / 30 . An element with atomic number 20 is placed in which period of the periodic table 1 3 2 2 21 / 30 Weak acids have Ka value <10-4 >10-4 >10-5 <10-5 22 / 30 In the system CaF2 — CaCl2, the reaction CaF2(s) + Melt « CaF2 . CaCl2(8) is called A solubility reaction Fusion temperature Formation of compound with congruent melting point A peritectice reaction 23 / 30 Identify a dye which was not originally obtained from plant source Tyrian purple Alizann Quercitrin Inctigotin 24 / 30 An element with half-filled 4p subshell belongs to group 15 13 16 14 25 / 30 Vitamin DI is chemically known as Phylloquinone Ergocalciferol Tocopherol Axerophthol 26 / 30 The electronegativities of C, N, Oand F in the order C>O>N>F F>OC>N C>N>OF F>O>N>C 27 / 30 H2S is stronger acid than H2O due to the reason that S — H bond is stronger H2S is a gas while H2O is liquid H2S forms H-Bond S — H bond is weaker than O------H bond 28 / 30 Which of the following is an azo dye? Rhodamine B Ertythrocin Congo red Paraosaniline 29 / 30 Vacuum ultraviolet region is 100-400nm 400 - 800 nm 100-200nm 200-400nm 30 / 30 A chromophore is an isolated fractional group which has Absorption in the region Only sigma bonds Coloured appearance Absorption in LTV-visible region Your score is Share: Quiz Dad Previous post Quiz Hard 2 October 1, 2022 Next post Quiz Hard 4 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 2 1 October, 2022