化学-入学测试模拟题（非医学）

For each question there is only ONE correct answer.Mark with a circle the letter (A,B.C.D or E)of the only correct answer on the Answer Sheet.1.The reaction between bromine and benzene is an example of(A)addition (B)oxidation (C)substitution (D)elimination(E)reduction2.Which of the following gases under identical conditions(temperature,pressure)contains thelargest number of molecules?(A)10 g nitrogen(B)10 g chlorine(C)10 g sulphur trioxide(D)10 g helium(E)10 g carbon dioxide3.In which of the following substances is there no hydrogen bond formation between themolecules?(A)ethanol(B)acetone(C)acetic acid(D)acetamide(E)liquid ammonia4.Which substance is the reducing agent in the following reaction:Cu 4 HNO3 Cu(NO3)22 NO2 +2 H2O(A)Cu(B)HNO3(C)Cu(NO3)2(D)NO2(E)H2O5.How many bismuth ions are contained in 1 mol bismuth-sulphide whose formula is Bi2S3?(A)2 pieces(B)1 piece(C)2 x 96500 pieces(D)1.2·1024 pieces(E)18·1023 pieces6.Which of the following molecules are polar?(A)SO2(B)COz(C)SO3(D)CH4(E)027.Which of the following metals do not liberate H2 gas from I mol/dm3 H2SO4?(A)AI(B)Na(C)Zn(D)Cu(E)Mg8.Which substances are each other's constitutional (structural)isomers?(A)acetic acid and acetone(B)acetone and propylaldehyde(C)formic acid and acetic acid(D)acetic acid and acetaldehyde(E)acetone and formic acid9.The chemical formula of sodium azide is NaN3.What mass of sodium would be found in 65 gof sodium azide?(A)46g(B)23g(C)35g(D)50g(E)18g