Quiz Medium 5 Categories Quizzes 0 Quiz Medium 5 1 / 25 The sugar present in RNA is Deoxyribose D-arabinose D-ribose D-glucose 2 / 25 Free Radicals are characterized by Diamagnetism Loss of electrons Paramagnetism Low Reactivity 3 / 25 Coulometry is based on the measurement of Electrical Conductance Electrical Potential Electrical current Dielectric constant 4 / 25 A pH of a neutral solution at 100°C when Kw = 1.0 x 10-12 is 7 2 6 12 5 / 25 Quinoline on oxidation with KMnO4 gives Nicotinic acid Picolinic acid Quinolinic acid All of these 6 / 25 Different arrangements of groups in space which can be converted into one another by rotation around a single bond are called Configuration Enantiomers Metamers Conformations All above 7 / 25 The element with maximum first ionization energy (for ionization potential) is O C N B 8 / 25 Inert pair effect is that When an electron pair is present on the atom of an element When an element shows inertness in chemical combination When two s-electrons or outermost shell remain paired and do not participate in bonding When higher oxidation state is more stable than lower oxidation state 9 / 25 Which of the following is not an ore of Cr? Crocoisite Chrome ochre Chrome iron Nicollite 10 / 25 Which of the following should have largest dipole moment? Cia-dichloroethylene Cis- Stilbeue Carbon tetrachloride Trans-dichlotoethylene Trans-Stilbeue 11 / 25 The fore of friction (F) between two cylindrical layers each of 'A' cm2 separated by 'I' cm having a velocity difference v ms-1 is given by F= n A / l F= n lv F= n lv / A F= n Av / l F= n Avl 12 / 25 For a cubic system, the interplanar distance 'd' is related to the unit dimension 'a' and the Miller indices hkl by the relation dhkl = a / (h +k + l ) All of above dhkl = a2 / [(h2 +k2 + l2 )] 1/2 dhkl = a / [(h2 +k2 + l2 )] 1/2 dhkl = a2 / (h2 +k2 + l2 ) 13 / 25 Among the unit cells given below. which has the highest symmetry Monocline Cubic Hexagonal Orthorhombic Tetragonal 14 / 25 Keto-enol tautomerism arises due to Migration of a proton Migration of a keto group Migration of enolic group Migration of hydroxyl group 15 / 25 The most abundant alkali metal is Lithium Potassium Rubidium Sodium 16 / 25 . Four moles of A are mixed with four moles of B when 2 mol of C are formed at equilibrium, according to the reaction A+B ↔ C+D The value of the equilibrium constant is 1/2. 4 8 1 1/4. 17 / 25 It is possible to distinguish between optical Isomers? By IR spectroscopy Using chemical tests By polarimetry By conductometry By mass spectrometry 18 / 25 Which of the following equations properly describes the relationship between surface tension, density and molar MASS of a liquid? Mý 1/2 / D = [P] Mý 1/5 / D = [P] Mý 1/3 / D = [P] Mý 1/4 / D = [P] Mý / D = [P] 19 / 25 Smoke Volatility index is expressed as? Smoke point = 1.42 x (percentage distilled at 204°C) None of these Smoke point = 0.42 x (percentage distilled at 204°C) Smoke point = 2.42 x (percentage distilled at 204°C) Smoke point = 3 42 x (percentage distilled at 204°C) 20 / 25 According to collision theory, reaction take place when molecules are All above In proper orientation Colliding Activated 21 / 25 Which of the following method is based on the solubility difference between the analyte and the unwanted components? Electrodeposition Complex formation Precipitation None of the above Distillation 22 / 25 For highly paraffinc crude oil, the chracterisation factor will be in range of 13.4 - 15.0 14.5 - 15.0 11.5 - 12.5 13.5 - 14.0 12.5 - 13.0 23 / 25 Ci.2-Butene on reaction with bromine gives 2,3-dibromobutane which is Racemic Reaction Meso-isomer Dextoro isomer Levoisomer 24 / 25 Which of the following statements is incorrect about rock salt type? Na+ and Cl- ions have coordination number of 6 :6 All halides of alkali metals have rock salt-type structure It has fcc arrangement of Na+ None of them A unit cell of NaCl consists of four NaCl unit 25 / 25 Which is not an ore of aluminium? Cryolite Bauxite Corundum Monazite Your score is Share: Quiz Dad Previous post Quiz Medium 4 October 1, 2022 Next post Quiz Hard 1 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