0% 0 Chemistry Quiz 3 1 / 50 When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields______________? Ethanoic acid Carboxylic acid Butanoic acid Propanoic acid 2 / 50 Potassium Permanganate is used for purifying drinking water, because_________? It is a sterilising agent. It is an oxidising agent. It dissolves the impurities of water. It is a reducing agent. 3 / 50 Selection of filter paper depends on size of particles to be________________? dried decolorized filtered decanted 4 / 50 Aqueous solution of borax above 62?C gives crystals of________________? Na2B4O7.5H2O Na2B4O7.2H2O Na2B4O7.4H2O Na2B4O7.10H2O 5 / 50 The first organic compound was synthesized in laboratory by_________________? Berthelot Berzilius Kolbe Wohler 6 / 50 Alpha particles can be detected by using___________? Zinc sulphide screen Gold foils Barium sulphate Thin Aluminium sheet 7 / 50 Quantum number which tells the energy of electron is________________? n m s 1 8 / 50 Acetaldehyele cyanohydrin on acid hydrolysis yields___________________? Tartaric acid Lactic acid Propanoic acid Valeric acid 9 / 50 For industrial preparation of CH3CHO catalytic promoter is_________________? Cu2Cl2 CuCl2 PbCl2 PdCl2 10 / 50 Which Oxide of Manganese is amphoteric? Mn2O3 MnO MnO2 Mn2O7 11 / 50 Neutrons moving with an energy of 1.2 MeV are called_______________? Slow neutrons All are possible Fast neutrons Moderate neutrons 12 / 50 Which one of the following does not show hydrogen bonding? Diethyl ether Ethyl alcohol Phenol Water 13 / 50 The bond length of C=C is___________? 1.34A? 1.68A? 1.20A? 1.54A? 14 / 50 Cassiterite is an ore of_______? Sn Ni Sb Mn 15 / 50 Consider the following reaction- 2KCIO3 + H2C2O4 + H2SO4 ? K2SO4 + 2H2O + 2CO2 + Oxide Which oxide of chlorine is produced in the above reaction ? ClO2 Cl2O6 Cl2O7 Cl2O 16 / 50 Keeping in view the size of atom which order is correct one ? Lu > Ce C1 > I Ba > Mg Mg > Sr 17 / 50 In order to mention the boiling point of water at 110?C the external pressure should be ? Between 760 torr and 1200 torr Between 200 torr and 760 torr any value of pressure 765 torr 18 / 50 Hydrogen resembles with carbon because of having________________? Homovalent (show same valency) Similar physical state Same number of electrons in the valence shell Remarkable reducing properties 19 / 50 Which alkyl halide has the highest reactivity for a particular alkyl group ? R-C R-I R-Br R-F 20 / 50 Fluorine can react with_________________? All of the above Rn Kr Xe 21 / 50 Which of the following statements is wrong about isotopes ? they possess same chemical properties they possess different position in the periodic table they possess different physical properties they possess different mass number 22 / 50 A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________? Adsorption chromatography Ascending chromatography Descending chromatography Radial chromatography 23 / 50 Which of the following is solid? Water Stone Both None 24 / 50 Introduction of nitro group in a molecule is called___________________? nitration halogenation amination sulphonation 25 / 50 Which of the following option is incorrect about gases ? All molecules behave independently All molecules move with same speed All gases cannot be liquefied through Linds Method PV / RT = n 26 / 50 Azimuthal quantum number defines___________? Angular momentum of an electron e/m ratio of an electron Magnetic momentum of an electron Spin of an electron 27 / 50 Ethers show functional group isomerism with __________________? alcohols aldehydes ketones carboxylic acid 28 / 50 Which one of the following is a state function ________________? pressure all of the above temperature enthalpy 29 / 50 Which of the following reaction is not shown by ketones ? reaction with NaHSO3 reaction with 2 4 dinitrophenyl hydrazine reaction with HCN reaction with Fehling solution 30 / 50 What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume ? 98.5 atm 96.7 atm 97.1 atm 95.8 atm 31 / 50 Which of the following is a substance? Sea water Brass Tape water Graphite 32 / 50 Which of the following is the best explanation that CO2 is non polar molecule __________________? Linear geometry Sp hybridization Dipole moment is zero None 33 / 50 The number of lone pairs in XeOF4 is_________? 3 1 2 O 34 / 50 In SI base units, 1 Bq is equal to __________ ? 10 disintegration per second 1.5 disintegration per second 1 disintegration per second 0.01 disintegration per second 35 / 50 When ? COOH is attached directly to the benzene ring the acid is called__________________? Carboxylic Aliphatic Aromatic Alicyclic 36 / 50 Acetophenone is a_____________________? Ketone Ether Ester Aldehyde 37 / 50 Li is different from its family members due to____________________? less electropositivity all of the above small size high charge density 38 / 50 Two fundamental ways to transfer energy are________________? pressure and volume pressure and temperature heat and work heat and volume 39 / 50 Benzene is heated in air with V2O5 at 450?C it undergoes________________? Elimination reaction Substitution reaction Addition reaction Oxidation reaction 40 / 50 Effective volume is usually taken for ____________ ? 3moles of gas 2 moles of gas 1 mole of gas 5 moles of gas 41 / 50 Addition of 2nd electron to a uni negative ion is always____________________? Exothermic Endothermic Data is insufficient Unpredictable 42 / 50 Ether functional group can be represented as ____________________? R-O-R R-COOH OH R-CO-R 43 / 50 Newspaper can be recycled again and again how many times ? 4 3 5 2 44 / 50 The atoms of same element having same atomic number but different mass number are called____________________? Isotropes Isobars Isotopes Isomers 45 / 50 Water of crystallization can be removed by________________? heating All of the above evaporation drying 46 / 50 Bond order for N2 molecule is __________________? 1 4 2 3 47 / 50 Enthalpy of a reaction can be measured by ____________________? glass calorimeter manometer Barometer thermometer 48 / 50 The number amino acid units for each turn of helix on average are____________________? 23 21 27 25 49 / 50 The main product of bacterial action is_________________? NO2 Nox N2O3 NO 50 / 50 The process of fermentation of starch involve many enzymes the sequence of enzymes used are____________________? Diastase-maltase-zymase Zymase-maltase-diastase Diastase-zymase-maltase Maltase-diastase-zymase Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevChemistry Quiz 2 Chemistry Quiz 4Next
