Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 Drying agent which react with CO2 and removes water vapours is Ca(Na3)2 CaCl2 CaCO3 CaO 2 / 30 Which of the following reactions is employed to produce ozone in the laboratory Exposure of air to Uvlight Reaction of SO2 with H2O2 passes of silent electric discharge through system reaction of F2 with H2O at low temperature 3 / 30 The first ionisation energies of the elements of the first transition series (Ti Cu) Decreases as the atomic number increases Do not show any change as the addition of electrons takes place in the inner (n — 1) d-orbitals Increases as the atomic number increases Increases from Ti to Mn and then decreases from Mn to Cu 4 / 30 O2 molecule is Ferromagnetic Paramagnetic Diamagnetic Ferrmagnetic 5 / 30 In which of the following characteristics doo hydrogen resemble halogens? Hydrogen in the lightest gas Hydrogen forms ionic hydrides with alkali metal Hydrogen has three isotopes H atoms contemn one electron each 6 / 30 stainless steel contains Cu+C=Ni Fe+Ni+Cu Fe+Cr+Ni Fe+Cr+Cu 7 / 30 Which of the following anionic species is not separated by gravimetric analysis? PO-34 CH3COOH- SO2-4 Cl- 8 / 30 In the presence of dilute alkali monosaccharides undergo rversible isomerisation.The reaction lnown as Mutarotation Kiliani reaction Weermann rearrangement Lobry de Bruyn van Ekenstein rearrangement 9 / 30 Which of the following statements regarding the manufacture of H2SO4 by contact process is not true? SO3 in dissolved in H2O to get 100% H2SO4 acid H2S04 obtained by contact process is of higher purity than that obtained by lead chamber process S is burnt in air to form SO2 SO2 in oxidized to SO3 in presence of V205 an catalyst (or finely divided spongy platinum as catalyst) at a prefigure of 2 atom and a temperature of about 700 K 10 / 30 The concentration OH- ions in a certain household ammonis solution is 0.0025. this ammonia is called acidic none basic neutral 11 / 30 Calcium cyanamide on treatises. wait steam under premium grave NH3 and Calcium carbonate Calcium hydroxide Calcium bicarbonate Calcium oxide 12 / 30 Biomass refers to all the organic material derived from electrolysis photosysnthesis photolysis oxidation 13 / 30 Which of the following techniques describes titrations in which a standard iodine solution is need? Iodimetry Iodemetry Argentometry Potentiometry Complexometry 14 / 30 which one of the following noble gas is obtained by radioactive disitegration? Br Xe Rn Kr 15 / 30 Which substance is not used as an additive it paper industry? Cellulose Starch Maltose Glucose Fructose 16 / 30 Finely divided iron combines with CO to give Fe3(CO)12 Fe(CO)3 Fe2(CO)9 Fe(CO)6 17 / 30 What ASTM test for tension is designated for plastics? A370 C674 E292 None of the above D638 18 / 30 Epimers are compounds that differ in Ring size Functional group Configuration at any carbon Configuration at α-carbon 19 / 30 Which of the following analytical techniques can be used to extract metal ion chelates? Solvent extractions Distillation Sublimation GC Evaporation 20 / 30 Neon is used in neon sign for advertising purpose because none Both a and b neon lights are available from long distance Neon light are available from fog and mist 21 / 30 Helium is used in weather balloons and airships instead of H2, because it is radioactive incombustible more abundant than hydrogen lighter than hydrogen 22 / 30 When steam is passed over red hole The products formed Ware Hydrogen and carbon dioxide Mixture of hydrogen and carbon monoxide Mixture of hydrogen and oxygen Heavy hydrogen 23 / 30 Setting of Plaster of Pans involves Dehydration Combination with atmospheric CO2 hydration to yeild another hydrate Oxidation with atmospheric oxygen 24 / 30 of all the nobel gasses, easily available gases He and Ne Ne and Ar Xe and Kr He and Ar 25 / 30 Perdisulphuric acid is none Marshal acid any of them Caro acid 26 / 30 The oxidation number of Xe in XeOF2 is 3 1 2 27 / 30 Which type of elements form ionic hydrides? Elements with high electropositivity Elements with high electronegativity Metalloids Transition elements 28 / 30 Aluminium reacts with boiling water to liberatedihydrog-en gas along with the formation of Aluminium hydroxide Aluminium suboxide Aluminium oxide Aluminium superoxide 29 / 30 The speed of a chemical reaction Between ions in aqueous solution is extremely rapid because there are no bonds that need to be broken. Varies inversely with the absolute temperature. Is constant no matter what the temperature is Between gases should in all cases be extremely rapid because the average kinetic energy of the molecules is great Is independent of the amount of contact surface of a solid involved. 30 / 30 Principal constituents of noble gases is neon Xenon Helium Argon Your score is Share: Quiz Dad Previous post Quiz Hard 1 October 1, 2022 Next post Quiz Hard 3 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 3 1 October, 2022
