Quiz Hard 3 Categories Quizzes 0 Quiz Hard 3 1 / 30 the emulsions. the dispersed phase and the dispersion medium are both gases both liquid both solids phase is liquid and medium is solid 2 / 30 The phase rule was deduced by Hennry Troution Gibbs Thomsan 3 / 30 Which of the following groups exert. -1 effect? —CN .-- NO2 all these — SO3H — COOH 4 / 30 For the reaction 2SO2 + O2 «2SO3 the rate of O2 is 2.0 * 10-4 mol -1 s-1. the rate of apperarences of SO3 is 2.0 * 10 -4 mol l -1 s -2 4.0 * 10 -4 mol l -1 s -2 1.0 * 10 -4 mol l -1 s -2 6.0 * 10 -4 mol l -1 s -2 5 / 30 Which of the following generally increases on going from top to bottom in a group? Reducing behaviour Oxidising behaviour Electronegativity Metallic character 6 / 30 The branch of chemist, which deals with the rate of reaction as well as mechanism is known as Matrix Mechanics Photochemistry Chemical kinetics Classical thermodynamics Wave mechanism 7 / 30 The function of boiling the sodium extrad with conc.HNO3 before testing the halogen. is To destroy C1,1- and S2 To bring common ion effect To make the solution acidic To make solution clear 8 / 30 The difference between the incident and scattered frequencies in the Raman spectrum in called the Anti-Stoke's law P-branch Stokes law Raman frequency 9 / 30 In a period, the element with largest atomic volume belongs to group 1 group 18 group 2 group 17 10 / 30 Who proved that all the six hydrogen atoms in benzene are equivalent? Kekule Wohler Ladenburg Faraday 11 / 30 The adsorption theory can explain the action of all these except Promoters Acid-base catalysis Heterogeneous Catalytic poisons 12 / 30 If R1 and R2 are the rates of reactions at concentration C1 and C2 then the order of the reaction (n) with respect to the reactant under consideration (keeping other factors mach as concentration of other reactants and temperature constant) n=log C2-C1/R2-R1 n=logC1-logC2/LogR1-LogR2 n= log R1 - log R2/log C1 -logC2 n= log R1C1/R2C2 13 / 30 which of the following relationship is correct regarding molecular energy levels? E(electronics) > E( vibrational)>E(rotational) E(vibrational) > E(electronics)>E(rotational) E(electronics) > E(rotational)>E(vibrational) E(rotational) > E( vibrational)>E(electronics) 14 / 30 Consider the third reaction k= 1/2t[ 1/C02 -1/C2] where Co is the initial concentration and C is the concentration at time t the half life period is t1/2= 3/2kC02 t1/2= 3/2kC0 t1/2= 3k/2C02 t1/2= 1/kC0 15 / 30 Which of the following arrangement is most stable' Singlet state (S2.) Triplet state (T1) Triplet state (TO2) Single states (Si) 16 / 30 The nuclei insensitive to nuclear magnetic resonance is H2 19F H1 16O 17 / 30 Considering the elements B, Al, Mg and K, the correct order of their metallic character B>AL>Mg>K K>Mg>Al>B Mg>Al>K>B 18 / 30 Which of the following will undergo decarboxylation on heating All Malonic acid Succinic acid Phthalic acid 19 / 30 HYPosochromic effect in IR spectrum Lowers the wavelength of absorption Increases the wavelength of absorption Increase the frequency of absorption Loiters the intensity of absorption 20 / 30 The addition of Br2 to cis 2 -butane produces .+ 2,3 diobromobutane only .- + 2,3 diobromobutane only meso 2,3 diobromobutane only .- 2,3 diobromobutane only 21 / 30 In the Langmuir adsorption isotherm, when p→0, the amount of substance adsorbed per gram of the adsorbent is propotional to po p2 p 1/p 22 / 30 which of the following is the major product when neopentyl bromide is dehydrogenated with alchohlic potash? 2-methyl 1--butane 2-methyl -1--butane 2--butane 2,3-dimethyl 1--butane 23 / 30 Cationic polymerization is initiated by NaNH2 BuLi BF3 Both b and c 24 / 30 In which of the following group each member gives positive idoform test? Methanol, ethanol, propanone ethanol, ispropyl, alchohol, methanol oropanal, 2- ptopanal, propanone ethanol, ethanal, ispropyl, alchohol 25 / 30 The adsorption theory explains Enzyme catalysis Acid-base catalysis Heterogeneous catalysis Homogeneous catalysis 26 / 30 A collooidal system in which a liquid is a dispersed in a solid is called precipitate emulsion gel sol 27 / 30 An nusochrome is group which Absorbs in UV region Absorbs in visible region Increases absorption wavelength of chromophore Absorbs in IR region 28 / 30 Which of the following is a nucleophile? BF3 CN- AlCl3 H3O+ 29 / 30 Essential oils are purified by which of the following methods? Sublimation Steam distillation Chromatography Fractional crystallization Crystallization 30 / 30 Which of the following radiation has vibrational transitions? Microwave X-rays Infrared Radiowaves gammarays 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
