Quiz Hard 3 Categories Quizzes 0 Quiz Hard 3 1 / 30 In which polymer the strength of intermolecular fortes is maximum? Fibre Elastomers Cross-linked polymer Thermoplastic 2 / 30 Mass spectrum of an alcohol gives a strong peak at m/e 31. The alcohol is likely to be a secondary alchohol any of these tertiry alchohol primary alchohol 3 / 30 The minimum amount of energy that the reacting molecules must possess at the time of collisions in order to produce effective collisions is called Activation energy External energy Free energy Internal energy Threshold energy 4 / 30 Which of the following ions does not have the electronic configuration same as that of neon? O2- F- Na+ Ca2+ 5 / 30 The change in the concentration of the reactant or product per unit time is called Rate constant Equilibrium constant Order of the reaction Moleculanty of the reaction Rate of reaction 6 / 30 Organic substances responsible for the smell of the flowers etc. are grouped together in chemistry as Perfumes Flavonoids Terpenoids Alkaloids 7 / 30 Which of the following statement is not related to collision theory? Molecule must collide with each other to do a chemical reaction Molecules must have proper orientation Collision theory is applicable to liquids only Molecules must possess a minimum amount of energy 8 / 30 . For which of the following compounds is the is rate of hydrolysis by aqueous alkali moat likely to The independent of the hydroxide on concentration? 2-bromo-2-methyl butane 1-chlorobutane 2-bremobuttine 1-iodobutane 9 / 30 For a reaction of type A+ B ® product is Products It is observed that doubling the concentration of A causes the reaction rate to be four times as great. but doubling the amount of B there is no apparent affect on the rate. The rate equation is Rate = k |A|2 |B| Rate = k |A|2 |B|2 Rate = k |A|2 Rate = k |A| |B| 10 / 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 6.0 * 10 -4 mol l -1 s -2 1.0 * 10 -4 mol l -1 s -2 2.0 * 10 -4 mol l -1 s -2 4.0 * 10 -4 mol l -1 s -2 11 / 30 The electrophile in the sulphonation of benzene is SO3 SO2 HSO4 SO3H 12 / 30 The value of molar extinction coefficient Frequency of absorption all these Wavelength of absorption Probability of transition 13 / 30 Which of the following pair of compound, cannot be distinguished on the basis of UV spectra? 1,3-Pentadiene and 1,4-Pentadierie Acetaldehyde and benzaldehyde Benzene and naphthalene Ethyl format and methyl acetate 14 / 30 PMR spectra of Ch3CHO may be described as Duplet for 3 protons qaurter for I proton Singlet for 3 protons anti duplet for proton Duplet for 3 protons and single for proton Quartet for 3 protons an3 duplet for 1 proton 15 / 30 Which of the following is linear polymer? Phenol-formaldehyde resin stratch Protein Polypeptide 16 / 30 The correct order of electron affinities is Si > CI > Na > Ar Cl > Si >Ar > Na CI>Na>Si>Ar CI>Si>Na>Ar 17 / 30 The process of a precipitats into colloidal solution on adding an electrolyte is called Electrosmosis peptization Electrophoresis Dialysis 18 / 30 Identify an oxygenated cyclic terpenoid Camphor alpha-terpineol Citral Geranil 19 / 30 Which of the following is not a true characteristic of a catalytic reaction The amount and chemical composition of the catalyst remains unchanged after the reaction The catalyst shifts the equilibrium position of a reaction in a favourable direction The reaction in which products also act as catalysis are called autocatalysed reactions The catalyst does not initiate a chemical rection 20 / 30 According to the Langumir isotherm, when the pressure of the gas is very large, the adsorption Is diectly propotional to the square of the pressure Is directly propotional to pressure Is inversely propotional to pressure Is independent of pressure 21 / 30 An impure sample of camphor, contaminated with sand, can be purified by Sublimation Steam distillation None of the above Distillation Chrotnawgraphy 22 / 30 Gutta-percha is Polyisobutylene Cis-poly isoprene Trans-polyiaoprene Polyethylene 23 / 30 Which of the following has highest ionization energy' Si Cl Na Ar 24 / 30 Which of the following is not a characteristic of terpenoids? They are pleasant smelling liquids They are nitrogenous bases they are insoluble in water they are steam volatile 25 / 30 The law of triads is applicable to flourine, chlorine, bromine sodium, potassium, rubidum cholrine,bromine,iodine Litium, beryllium, boron 26 / 30 Which of the following radiation has high frequency? Microwaves Rndiowaves Infrared Gamma rays X-rays 27 / 30 A compound with an incongruent melting point decomposes on heating into A solution of fixed composition A new solid phase and a solution with a composition different from that of the solid phase A new solid phase and a solution with the same composition as that of the solid phase A liquid of the same composition as the solid 28 / 30 The dye which is a constituent of Schiff', reagent used for detection of aldehydi, group is Magneto Rosolic acid Gentian violet Phenolphthalein 29 / 30 A system is said to be in the colloidal state if the particle size of the dispersed phase ranges from 10 to 100 Å 1000 to 100000 Å I to 10 Å 10 to 10000 Å 30 / 30 In the Mendeleev's periodic table, elements ore arranged in the increasing order of their Numbers of neutrons Atomic number Atomic mass Atomic volume 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
