0% 0 Chemistry Quiz 22 1 / 50 Elements having high I.P values are____________________? Liquids Solids Metals Non metals 2 / 50 Beckmanns apparatus is used to measure_______________? boiling point elevation lowering of osmotic pressure lowering of vapour pressure depression in freezing point 3 / 50 In a group ionic radius ? Increases Decreases No change Variable trend 4 / 50 The main buffer system of the human blood is____________? H2CO3?? HCO3 CH3COOH ? CH3COO? H2CO3?? CO32- NH2CONH2?? NH2CONH+ 5 / 50 Formula of haloform is_________________? HCOX CH3X CX4 CHX3 6 / 50 The amount of heat absorbed when one mole of a liquid is changed into gas at its boiling point is_____________________? Latent heat of that liquid Molar heat of vapourization Molar heat of fusion Molar heat of sublimation 7 / 50 Sabatier Senderns reaction involve _____________ in presence of Ni? alkyne & Cl2 alkene & N2 Aalkene & H2 alkene & O2 8 / 50 Total energy of a system is_________________? P.E + K.E K.E + heat energy P.E + mechanical energy P.E + heat energy 9 / 50 Critical temperature for different gases is different and depends upon______________? Shape of molecule Size of molecule All of the above Intermolecular attractions 10 / 50 What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called? Glass Paint Gun Powder Cement 11 / 50 Sommerfelds modification in Bohrs model is_______________? Orbit is longitudinal Orbit is elliptical Orbit is asymmetrical Orbit is cylindrical 12 / 50 All the enthalpy changes are________________? Negative none May or may not be A or B Positive 13 / 50 Which sequence of steps is correct for the manufacture of cement ? crushing grinding mixing heating crushing heating mixing grinding crushing mixing heating grinding and mixing mixing heating grinding crushing 14 / 50 Which set of elements is listed in order of increasing ionization energy ? Sb < As < Cl < S < P As < Cl < P < S < Sb Cl < Sb < P < As < S Sb < As < S < P < Cl 15 / 50 Which of the following terms is used for the mass of chlorine 35.5 ? atomic weight relative atomic mass mass number relative isotopic mass 16 / 50 The general formula of cycloalkene is __________________? CnH2n CnH2n+2 CnH2n-1 CnH2n-2 17 / 50 The number of isotopes of elements with even mass number and even atomic number are ________________? 154 54 300 280 18 / 50 Acetic anhydride can be obtained by treating ethyl alcohol with___________________? P2O5 H2SO4 PCI5 Both A and B 19 / 50 For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp ? Kc is equal to Kp if the total moles of reactants and products are equal Kc is generally equal to Kp Kc is generally greaer than Kp Kc is generally less than Kp 20 / 50 Which of the following is soluble in water? AgCl AgF AgI AgBr 21 / 50 The PH of the 1.3 ? 10-4 NH4Cl is__________? 2.886 3.886 4 1.3 22 / 50 Percentage of sulfuric acid in lead accumulator is__________________? 25% 30% 40% 50% 23 / 50 Oxidation state +1 for phosphorous is found in___________? H2P2O7 H3PO2 H3PO4 H3PO3 24 / 50 Which one of the following is also known as lactic acid ? 2-Hydroxy propanoic acid 3-Hydroxy propanoic acid 3-hydroxy butanoic acid 2-hydroxy butanoic acid 25 / 50 Which one of the followings possesses melting point below 0?C? Nitrogen Carbon Bismuth Phosphorus 26 / 50 Amylose is__________________? Insoluble in water Soluble in alcohol Soluble in water Partially soluble in alcohol 27 / 50 Bleaching powder is an example of________________? Complex Double salt Normal salt Mixed salt 28 / 50 Which one of the following substances conducts electricity by the movement of ions ? Molten sodium chloride Mercury Graphite Copper 29 / 50 SO3 is not absorbed in water directly because__________________? It is insoluble in water All of above Reaction is exothermic Dilute acid is produced 30 / 50 The carbon-carbon bond strength is maximum in__________? CH3CH3 Cyclohexane Benzene CH2=CH2 31 / 50 Marsh gas is_______? Methane Ethane Nitrogen Hydrogen 32 / 50 Which of the following noble gases is not present in atmosphere? Helium Xenon Radon Argon 33 / 50 A catalyst can not effect__________________? both A & B Reactants Chemical equilibrium Products 34 / 50 Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate ? Secondary alcohol All of above Primary alcohol Tertiary alcohol 35 / 50 Which one is not the partial pressure of oxygen in the lungs ? 116 mm of Hg 116 torr 0.1526 atm 1 atm 36 / 50 Unit of rate of reaction is_________________? Moles dm-3 Moles sec-1 Moles dm-3 sec-1 Mol-1 dm3 sec-1 37 / 50 How many moles are in 22.2 grams of Calcium chloride, CaCl2? 0.2 moles 0.5 moles 0.4 moles 0.3 moles 38 / 50 Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________? De-excitation of electrons from higher energy levels to low energy level Smaller ionic radius of these metals Smaller electronegativity of alkali metals Excitation of electrons from low energy levels to higher energy levels 39 / 50 Which of the following is not a condition for the formation of smog ? less movement of air sunlight sufficient NO winds 40 / 50 The type of hybridisation of boron in diborane is______? Sp3d2- hybridisation Sp- hybridisation Sp3- hybridisation Sp2- hybridisation 41 / 50 The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________? 3 7 1 5 42 / 50 Which one of the following is not the use of graphite ? Lubricant Electrode of electrolytic cell Abrasive Lead pencils 43 / 50 Linds method is employed for__________________? Separation of gases Expansion of gases Liquefaction of gases Compression of gases 44 / 50 Removal of halogen and hydrogen atom is_________________? hydrohalogenation dehalogenation dehydrohalogenation halogenation 45 / 50 Which one of the following statement is not correct about benzene ? Resonance energy of benzene is 150.5 K Cal/mole C-H bond length in benzene is 1.09 A? Molecular mass of benzene is 78.108 On hydrogenation 208 KJ/mole is liberated 46 / 50 Amphoteric exides are those which possess ____________ properties? Basic Acidic and basic Acidic Neutral and acidic 47 / 50 The important monomers of acryclic resins is__________________? Vinyl chloride Methylmethacrylate Styrene Hexamethylenediamine 48 / 50 Energy of reactant higher than energy of product favours Moderate reaction Exothermic No reaction Endothermic_______________? 49 / 50 Which of the following cannot exist in solution_________________? Cl- H+ Na+ O-2 50 / 50 Which of the following unit of concentration is independent of temperature ? Molarity Molality all Mole fraction 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 21 Chemistry Quiz 23Next
