5In the following reaction which element got oxidized : 3HNO3(aq) + Al(s) → Al3+ + 3NO2(g) + 3OH-a.Aluminum ( Al)b.Hydrogen (H)c.Nitrogen (N)d.Oxygen (O) 6One of the following is NOT a strong acid :a.H2SO4b.HClc.HNO3d.HCN 8The pressure of a gas in flask is 430.2 mmHg, what is the pressure in atmosphere (atm) ?( 1atm = 760 mmHg)a.0.9324 atmb.1.073 atmc.619400 atmd.0.5660 atm 9The theoretical yield of product is the maximum amount of product that can be obtained from given amounts of reactantsSelect one:TrueFalse 10The following reaction is classified as …………….. reactionCaO(s) + H2O(l) → Ca(OH)2(s)a.Combination reactionb.Decomposition reactionc.Displacement reactiond.Combustion reaction 11The metals of group 1 in the periodic table are the strongest reducing agentsSelect one:TrueFalse 12What is the molecular formula of a compound, If its empirical formula C2H6As (M.wt 105.0 g/mole) and its molecular weight = 210.0 g/mole?a.C4H12As2b.C2H6Asc.C6H6O6d.C6H12O6 13The hydroxides of Group IA and IIA elements, except for beryllium hydroxide, are weak basesSelect one:TrueFalse 14A precipitate is an insoluble solid compound formed during a chemical reaction in solutionSelect one:TrueFalse 15In an experiment, you fill a heavy-walled 5.00 L flask with methane gas. If the flask contains 4.67 mole of methane at 292 K, what is the gas pressure?a.22.4 atmb.0.00657 atmc.None of themd.258 atm 16The reaction of iron ore with carbon follows the equation:2 Fe2O3 + 3 C → 4 Fe + 3 CO2 If 200.0 g of Fe2O3 were reacted with 300.0 g of C, How many grams of Fe can be produced (theoretical yield )? M.wt ( Fe2O3=159.6 u , C = 12.0 u, Fe=55.8u ) a.139.8 gb.4.36 gc.5.73 gd.1860 g 18The pressure exerted by a gas at constant volume is inversely proportional to its absolute temperature.Select one:TrueFalse 19When Carbonates react with acids form SO2, sulfur dioxide gasSelect one:TrueFalse 20 By the half-reaction method the balanced equation of the following redox reaction is Fe+3(aq)+ Mg(s) → Fe(s) + Mg+2 (aq) a.Fe+3(aq)+ 3 e → Fe(s)b.Fe+3(aq)+ Mg(s) → Fe(s) + Mg+2 (aq)c.3 Fe+3(aq)+ 2Mg(s) → 3Fe(s) + 2Mg+2 (aq)d. 2Fe+3(aq)+ 3Mg(s) → 2Fe(s) + 3Mg+2 (aq) 21Important units of pressure :a.All of themb.Atmosphere ( atm)c.mm Hg or torrd.Pascal (Pa) 22…………as the species (molecule or ion) that donates a proton (H+)a.The Arrhenius acidb.The Brønsted-Lowry acidc.The Brønsted-Lowry based.The Arrhenius base 23a 5.20 L sample of neon gas had a pressure of 0. 412 atm. What would be the volume of this gas if the pressure were increased to 1.63 atm at constant temperature?a.12.9 Lb.1.31 Lc.2.06 Ld.2.95 L 24A 5.43 gram sample of an unknown gas occupied a volume of 2.50 L at 25°C and a pressure of 2.63 atm. Calculate its molecular massa.39.3 g/moleb.84.3 g/molec.20.1 g/moled.1.69 g /mole 25A decomposition reaction is a reaction in which two substances combine to form a third substanceSelect one:TrueFalse 266.2 moles of H2SO4 are dissolved in 1.5 L of water. What is the Molarity of the H2SO4 solution ?a.4.1 Mb.0.24 Mc.9.3 Md.None of them 27According to Kinetic Theory of an Ideal Gas there is inherent attractive and repulsive forcesbetween particles.Select one:TrueFalse 28 A hydrometer is a device for measuring the pressure of the atmosphereSelect one:TrueFalse 29Electrolytes are substances that dissolve in water to give an electrically conducting solution.Select one:TrueFalse 30Element (Y) effuses 2.2 times faster than Element (X).M.wt X=4.0 g/mole , M.wt Y = 20.2 g/moleSelect one:TrueFalse 31Effusion is the transfer of a gas through a membrane or orifice .Select one:TrueFalse 32What is the oxidation number Ga in Ga(OH)3 ?a.+1b.+3c.-3d.-1

Question

5In the following reaction which element got oxidized : 3HNO3(aq) + Al(s) → Al3+ + 3NO2(g) + 3OH-a.Aluminum ( Al)b.Hydrogen (H)c.Nitrogen (N)d.Oxygen (O)  6One of the following is NOT a strong acid :a.H2SO4b.HClc.HNO3d.HCN 8The pressure of a gas in flask is 430.2 mmHg, what is the pressure in atmosphere (atm) ?( 1atm = 760 mmHg)a.0.9324 atmb.1.073 atmc.619400 atmd.0.5660 atm 9The theoretical yield of product is the maximum amount of product that can be obtained from given amounts of reactantsSelect one:TrueFalse 10The following reaction is classified as …………….. reactionCaO(s) + H2O(l) → Ca(OH)2(s)a.Combination reactionb.Decomposition reactionc.Displacement reactiond.Combustion reaction 11The metals of group 1 in the periodic table are the strongest reducing agentsSelect one:TrueFalse 12What is the molecular formula of a compound, If its empirical formula C2H6As (M.wt 105.0 g/mole) and its molecular weight = 210.0 g/mole?a.C4H12As2b.C2H6Asc.C6H6O6d.C6H12O6 13The hydroxides of Group IA and IIA elements, except for beryllium hydroxide, are weak basesSelect one:TrueFalse 14A precipitate is an insoluble solid compound formed during a chemical reaction in solutionSelect one:TrueFalse 15In an experiment, you fill a heavy-walled 5.00 L flask with methane gas. If the flask contains 4.67 mole of methane at 292 K, what is the gas pressure?a.22.4 atmb.0.00657 atmc.None of themd.258 atm 16The reaction of iron ore with carbon follows the equation:2 Fe2O3 + 3 C → 4 Fe + 3 CO2 If 200.0 g of Fe2O3 were reacted with 300.0 g of C, How many grams of Fe can be produced (theoretical yield )? M.wt ( Fe2O3=159.6 u , C = 12.0 u, Fe=55.8u ) a.139.8 gb.4.36 gc.5.73 gd.1860 g 18The pressure exerted by a gas at constant volume is inversely proportional to its absolute temperature.Select one:TrueFalse 19When Carbonates react with acids form SO2, sulfur dioxide gasSelect one:TrueFalse 20 By the half-reaction method the balanced equation of the following redox reaction is  Fe+3(aq)+ Mg(s) → Fe(s) + Mg+2 (aq)  a.Fe+3(aq)+ 3 e → Fe(s)b.Fe+3(aq)+ Mg(s) → Fe(s) + Mg+2 (aq)c.3 Fe+3(aq)+ 2Mg(s) → 3Fe(s) + 2Mg+2 (aq)d. 2Fe+3(aq)+ 3Mg(s) → 2Fe(s) + 3Mg+2 (aq) 21Important units of pressure :a.All of themb.Atmosphere ( atm)c.mm Hg or torrd.Pascal (Pa) 22…………as the species (molecule or ion) that donates a proton (H+)a.The Arrhenius acidb.The Brønsted-Lowry acidc.The Brønsted-Lowry based.The Arrhenius base 23a 5.20 L sample of neon gas had a pressure of 0. 412 atm. What would be the volume of this gas if the pressure were increased to 1.63 atm at constant temperature?a.12.9 Lb.1.31 Lc.2.06 Ld.2.95 L 24A 5.43 gram sample of an unknown gas occupied a volume of 2.50 L at 25°C and a pressure of 2.63 atm. Calculate its molecular massa.39.3 g/moleb.84.3 g/molec.20.1 g/moled.1.69 g /mole 25A decomposition reaction is a reaction in which two substances combine to form a third substanceSelect one:TrueFalse 266.2 moles of H2SO4 are dissolved in 1.5 L of water. What is the Molarity of the H2SO4 solution ?a.4.1 Mb.0.24 Mc.9.3 Md.None of them 27According to Kinetic Theory of an Ideal Gas there is inherent attractive and repulsive forcesbetween particles.Select one:TrueFalse 28 A hydrometer is a device for measuring the pressure of the atmosphereSelect one:TrueFalse 29Electrolytes are substances that dissolve in water to give an electrically conducting solution.Select one:TrueFalse 30Element (Y) effuses 2.2 times faster than Element (X).M.wt X=4.0 g/mole , M.wt Y = 20.2 g/moleSelect one:TrueFalse 31Effusion is the transfer of a gas through a membrane or orifice .Select one:TrueFalse 32What is the oxidation number Ga in Ga(OH)3 ?a.+1b.+3c.-3d.-1

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