Quiz Medium 5 Categories Quizzes 0 Quiz Medium 5 1 / 25 Which of the following statements is incorrect about rock salt type? A unit cell of NaCl consists of four NaCl unit It has fcc arrangement of Na+ All halides of alkali metals have rock salt-type structure None of them Na+ and Cl- ions have coordination number of 6 :6 2 / 25 Which of the following will exibit variable electro-valency due to inert pair effect? K Sn Both Fe and Sn Fe 3 / 25 Ethylamine and aniline can be distinguish by Liebermann's nitrosoamine test Dye test Carbylamine test Hinsberg's test 4 / 25 Hydrometallurgy of copper involves extraction of copper from poor ores by which process? None of the above Both dry and wet processes Wet process Dry process 5 / 25 Which of the following state is not true with respect to copper? Molten copper absorbs carbon dioxide It forms alloys easily It is malleable and ductile It is a best conductor of heat and electricity 6 / 25 The hybridization of nitrogen atom in pyridine is sp3 It is not hybridized sp sp2 7 / 25 HS- is a conjugate base of H2SO4 H2S S2- H2SO3 8 / 25 How many varieties of commercial iron are known? 2 3 1 4 9 / 25 Solid sodium chloride does not conduct electricity because In solid NaCI, no ions are present In solid NaCI, there are no electrons Solid NaCI is covalent in nature In solid NaCI, there is no mobility of ions 10 / 25 The pKa of acetic acid is 4.74, which implies that pH of 1 N solution is 4.74 At pH 4.74, the dissociation of acetic acid is minimum At pH 4.74, half of the acetic acid molecules are dissociated in the solution At pH 4.74, the dissociation of acetic acid is maximum 11 / 25 Which of the following statement is not true in case of catalytic reforming? High paraffinic stock requires low space velocity None of these Highly naphthenic stock require high space velocity Presence of water decrease the hydrocracking activity High temperature results in loss of reformats yield 12 / 25 The process of extracting a metal in pure form from its orea is known as Grinding Metallurgy Crushing Dressing 13 / 25 Diels-Alder reaction is an example of which type of reaction Sigmatropic reaction Pericyclic reaction Nucleophilic addition Electrophilic addition 14 / 25 Which property is used in volumetric methods of analysis Surface tension Molar Volume Density Viscosity Volume 15 / 25 Reynolds's number is used to describe the type of flow of a liquid. Which of the following equations define properly this parameter? 5rd v' / n 4rd v' / n rd v' / n 2rd v' / n 3rd v' / n 16 / 25 Which parametre of a chemical reaction will change with the use of a catalyst? ∆S, change in entropy ∆E, change in internal energy K. the rate constant ∆A, change in Helmholtz free energy ∆F, change in free energy 17 / 25 The role of the mineral cryolite. Na3AIF5, in the Hall process for aluminum production is It is a chemical reducing agent C It forms a slag to remove impurities In the molten state, it is a solvent for alumina, Al203 It is the source of aluminum (the ore) 18 / 25 Copper is mainly extracted from which of the following ore Carbonate ores Oxide ores Non-sulphide ores Sulphide ores 19 / 25 Industrial production of acetaldehyde is done by Oxidation of ethanol Reduction of acetic acid Hydration of acetylene Oxidation of ethylene in the presence of Pd2+ 20 / 25 Gravimeter method is based on which of following property? Mass of substance Melting Point Viscosity Volume of a liquid Volume of a gas 21 / 25 Which of the following compounds does not show dipole moment? HBr CH3OH CCL4 CHCL3 C6H5OH 22 / 25 Which of the following is not an ore of Cr? Chrome ochre Crocoisite Nicollite Chrome iron 23 / 25 The number of hydrogen bonds holding A -- T pair is 4 1 3 2 24 / 25 Which of the following compound will be optically active? Chloroacetic acid Acetic acid Lactic acid Succinic acid Meso-tartaric acid 25 / 25 The base which is not present in DNA is Uracil Adenine Thymine Guanine 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
