推 whaleswin16 :農化系已收 06/30 21:17
課程名稱︰普通化學甲
課程性質︰必修
課程教師︰林泱蔚
開課學院：
開課系所︰地質系、大氣系、農化系
考試日期（年月日）︰98/06/23
考試時限（分鐘）：160
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
選擇題(each 2%)
1.The flotation process used in metallurgy involves
(A) the roasting of sulfides. (D) chemical reduction of a metal.
(B) separation of gangue from ore. (E) zone refining.
(C) electrolytic reduction.
2.Which of these reactions represents the removal of silica from iron ore in a
blast furnace?
(A) SiO2(s)--->SiO2(g)
(B) SiO2(s)+CaO(s)--->CaSiO3(l)
(C) SiO2(s)+4HF(g)--->SiF4(g)+2H2O(g)
(D) SiO2(s)+C(s)--->Si(l)+CO2(g)
(E) SiO2(s)+CO(g)--->SiCO3(l)
3.In the Hall process, _________ is reduced ________.
(A) nickel;electrolytically
(B) aluminum;electrolytically
(C) nickel;by reaction with metallic sodium
(D) aluminum;by reaction with metallic sodium
(E) copper;electrolytically
4.In the Mond process, nickel is purified by
(A) dissolving the crude ore in sulfuric acid, and precipitating the nickel(II)
ion as the sulfate salt.
(B) passing carbon monoxide over the impure metal at high temperature, forming
the volatile Ni(CO)4 which is removed as a gas.
(C) dissolving the crude ore in a lye (NaOH) solution, and precipitating the
nickel(II) ion as the hydroxide salt.
(D) heating the crude ore to its melting point and electrolytically reducing the
nickel(II) ions to form the metal.
(E) passing sodium gas over the crude ore at high temperatures, chemically reducing
the nickel(II) to nickel metal.
5.Which one of these elements would give a p-type semiconductor when added to a
silicon crystal?
(A) C (B) Ga (C) As (D) P (E) Sb
6.Which of these elements when doped into silicon would give an n-type semiconductor?
(A) C (B) P (C) Ga (D) Ge (E) B
7.In the production of potassium metal, the source of electrons in the reduction of
K+ ions is
(A) H2(s) (B) Na(g) (C) CO(g) (D) CaO(s) (E) electrolysis
8.The equilibrium 3Fe(s)+C(s)--->Fe3C(s) is established in a solid solution.
For such a solution, one can write an equilibrium constant in the usual way expect
that here one has concentrations that refer to solids in the solid solution.
Determine the equilibrium constant for the formation of cementite from iron and carbon
at 680。C. (Given:for this reaction at 25。C,△H。= 21 KJ/mol and △S。= 20.4 J/mol*K)
(A) 0.75 (B) 0.82 (C) 3.1 (D) 0.33 (E) 1.2
9.For the reaction 3Fe(s)+C(s)--->Fe3C(s).△H。= 21 KJ/mol and △S。= 20.4 J/mol*K
at 25。C. Estimate the minimum temperature above which the formation of cementite
(Fe3C) is favored.
(A) 1.0。C (B) 760。C (C) 700。C (D) 1000。C (E) 790。C
10.Which choice gives two raw materials used in the Solvay process?
(A) NaHCO3 and NaCl (D) CaCO3 and Na2CO3
(B) NH3 and NaCl (E) Na2CO3 and NH4Cl
(C) NaCl and NaCO3
11.A chemical formula of the carbide ion is
(A) Si 4- (B) C2 - (C) C2 2- (D) CN - (E) C3 -
12.The Ostwald process is the main method for the manufacture of nitric acid. In the
first step of this process
(A) nitrogen and hydrogen react to form NH3.
(B) ammonia is burned in O2 to generate N2 and H2O.
(C) ammonia is burned with O2 to generate NO and H2O.
(D) nitrogen and oxygen react to form NO.
(E) nitrogen and oxygen react to form NO2.
13.Phosphoric acid is the most important of the phosphorus oxoacids. Industrially
phosphoric acid is prepared by
(A) the Ostwald process.
(B) the Haber procsee.
(C) the reaction of phosphate rock with sulfuric acid.
(D) the reaction of P4O10 with water.
(E) the Frasch process.
14.The bond energy of F2 is anomalously low, in comparison with the other halogens,
due to the small size of the fluorine atom. Which of the following periodic properties
is also anomalously low in the case of fluorine?
(A) first ionization energy (D) diatomic bond lengh
(B) electronegativity (E) ionic radius
(C) electron affinity
15.Ozone (O3) and oxygen gas (O2) are examples of
(A) isotopes. (B) polymorphs. (C) allotropes. (D) alloys. (E) amphoterism.
16.When in the liquid state, which one of these subtances resembles water, insofar
as it is a solvent for many electrolytes and even undergoes autoionization as water
does?
(A) N2 (B) Cl2 (C) NH3 (D) N2O (E) Xe
17.Chlorine gas is prepared commercially by
(A) electrolysis of carbon tetrachloride. (D) oxidation of chloride ion with Br2(aq).
(B) oxidation of chloride ion with F2(g). (E) electrolysis of AlCl3(aq).
(C) electrolysis of NaCl(aq).
18.When liquid phosphorus trichloride reacts with water, the products are
(A) PCl5 and H3PO4. (D) H3PO4 and Cl2.
(B) H3PO3 and Cl2. (E) H3PO4 and HCl.
(C) H3PO3 and HCl.
19.Water gas is
(A) H2O(g).
(B) an aqueous solution of various hydrocarbons.
(C) a mixture of CO(g) and H2(g).
(D) a mixture of CO2(g) and H2O(g).
(E) a dilute solution of H2CO3(aq) formed by dissolving CO2(g) in water.
20.Which of these hydrides is the most ionic?
(A) LiH (B) NaH (C) RbH (D) NH3 (E) CH4
21.Cis-platinum complexes are
(A) used in the extraction of silver and gold.
(B) effective antidotes for heavy metal poisoning(e.g., Pb2+ and Hg2+).
(C) used to provide nutrients plants.
(D) used to prevent eutrophication of lakes.
(E) effective antitumor agents.
22.Consider the [CoCl6]4- ion. Which response includes all the following
statements that are true and no false statements?
I.It is a low-spin complex.
II.The coordination number of cobalt is 6.
III.It is paramagnetic.
IV.The oxidation number of Co is -4.
(A) I,II,III,IV (B) I,IV (C) II,III (D) I,III (E) III,IV
23.The ion [Co(NH3)6]2+ is octahedral and high spin. This complex is
(A) diamagnetic.
(B) paramagnetic, which 5 unpaired electrons.
(C) paramagnetic, which 4 unpaired electrons.
(D) paramegnetic, which 1 unpaired electrons.
(E) paramagnetic, which 3 unpaired electrons.
24.Two complex ions containing Ni are [Ni(NH3)6]2+, which is blue, and
[Ni(en)3]2+,which is purple. Which one of these statements is true?
(A) The crystal field splitting energy (△) is greater for [Ni(NH3)6]2+ than
for [Ni(en)3]2+.
(B) [Ni(en)3]2+ absorbs light in the violet region of the spectrum.
(C) Both complex ions are diamagnetic.
(D) The wavelength of the light absorbed by [Ni(en)3]2+ is greater than the
wavelength absorbed by [Ni(NH3)6]2+.
(E) The energy of the photon absorbed by [Ni(en)3]2+ is greater than that absorbed
by [Ni(NH3)6]2+.
25.Two well-known complex ions containing Ni are [Ni(H2O)6]2+, which is green, and
[Ni(en)3]2+, which is purple. Which one of these statements is true?
(A) The green complex absorbs green light.
(B) [Ni(en)3]2+ absorbs energy in the red region of the spectrum.
(C) Both complex ions are diamagnetic.
(D) [Ni(H2O)6]2+ transmits light with wavelengths of approximately 650-700 nm.
(E) The crystal field splitting energy (△) is greater for [Ni(en)3]2+ than
for [Ni(H2O)6]2+.
26.Which of these complex ions would absorb light with the longest wavelength?
(A) [Co(NH3)6]2+ (D) [Co(CN)6]4-
(B) [Co(H2O)6]2+ (E) [CoF6]4-
(C) [Co(en)6]2+
27.Which of these ligands produces the strongest crystal field?
(A) Cl- (B) NH3 (C) OH- (D) H2O (E) CO
28.The numbers of geometrical isomers and optical isomers of the complex ion
[Co(en)3]3+ are, respectively
(A) 2 and 2 (B) 1 and 1 (C) 3 and 2 (D) 2 and 4 (E) 1 and 2
29.The best name for K4[FeCl2(CN)4] is
(A) tetrapostassium dichlorodicyanoiron(II).
(B) potassium dichlorodicyanoiron(II).
(C) potassium dichlorodicyanoferrate(III).
(D) tetrapotassium dichlorobis(cyano)iron(III).
(E) potassium dichlorotetracyanoferrate(II).
30.The best name for the complex shown below is
┌ H2C ┐
｜ / ＼ ｜
｜H2C NH2 Br｜
｜ \ /／ ｜
｜ H2N－Co－Br｜
｜ ◤｜ ｜Br
｜ H2N NH2 ｜
｜ / / ｜
｜H2C / ｜
｜ \ / ｜
└ CH2 ┘
(A) cobalt(III)bis(ethylenediamine) bromide.
(B) tribromobis(ethylenediamine)cobalt(III).
(C) dibromidedi(ethylenediamine)cobalt(III) bromide.
(D) dibomodiethylenediaaminecobalt(III) bromide.
(E) dibromobis(ethylenediamine)cobalt(III) bromide.
31.Unsaturated hydrocarbons
(A) contain at least one double or triple carbon-carbon bond.
(B) contain at least one element other than hydrogen and carbon.
(C) contain the maximum number of hydrogens that can bond with the carbon atoms present.
(D) cannot form structural isomers.
(E) cannot undergo addition reactions.
32.Which functional rroup, when present in a compound that is allowed to stand
in air, poses a danger of slowly yielding explosive peroxides?
(A) ether (B) alcohol (C) carboxylic acid (D) ketone (E) unsaturated hydrocarbon
33.Which of these reactions leads to a change in the hybridization of one or more
carbon atoms?
(A) oxidation of an alcohol to yield a carboxylic acid
(B) hydrolysis of an ester to yield an acid and an alcohol
(C) substitution of an aromatic ring using a halogen
(D) free radical halogenation of an alkane
(E) neutralization of an amine using a strong mineral acid
34.Bromination of benzene (C6H6), an aromatic compound.
(A) occurs by substitution rather than addition.
(B) occurs by addition rather than substitution.
(C) occurs more rapidly than bromination of a nonaromatic compound.
(D) results in formation of 1,2,3,4,5,6-hexabromocyclohexane.
(E) occurs in the absence of a catalyst.
35.The reaction of Cl2 with CH4 to produce methyl chloride is an example of a/an
(A) free radical reaction.(D) ester hydrolysis.
(B) addition reaction. (E) polymerization.
(C) reduction reaction.
36.Oxidation of the 2-propanol will produce a/an
(A) ketone (B) amine (C) alkene (D) aldehyde (E) carboxylic acid
37.The expected product from the addition of HCl to CH3－CH2－CH＝CH2 is
(A) CH3－CH2－CHCl－CH3 (D) H3－CH2－CCl＝CH
(B) CCH3－CH2－CH2－CH2Cl2 (E) CH3－CH2－CH＝CHCl
(C) CH3－CHCl－CH＝CH2
38.The correct structure for 2,3,3-trimethylpentane is
(A) CH3 CH3
｜ ｜
CH3－CH－C－CH2CH3
｜
CH3
(B) CH3 CH3
｜ ｜
CH3－C－CH－CH2CH3
｜
CH3
(C) CH3－CH－CH－CH－CH3
｜ ｜ ｜
CH3 CH3 CH3
(D) CH3－CH－CH－CH－CH3
｜ ｜
CH3 CH2－CH3
39.The systematic name for the compound represented below is
CH2－CH3
｜
CH3－CH2－CH2－CH－CH－CH3
｜
CH2
｜
CH2－CH3
(A) 3-methyl-4-propylheptane (D) 4,5-diethylheptane
(B) 3-propyl-4-ethylhexane (E) 2-ethyl-4-propylhexan
(C) 3-ethyl-4-propylhexane
40.The octane rating of gasoline refers to its
(A) ability to resist engine knocking.
(B) radiation dose.
(C) alcohol level.
(D) percentage C8H18 by volume.
(E) percentage of unsaturated hydrocarbons.
41.Which of the following statements about the binding of oxygen to
deoxyhemoglobin is correct?
(A) The binding of oxygen to Fe2+ in the first heme pushes the iron ion out
of the porphyrin ring, decreasing the affinity for the second oxygen.
(B) The binding of oxygen to Fe2+ in the first heme pulls the iron ion into
the porphyrin ring, increasing the affinity for the second oxygen.
(C) The binding of oxygen to Fe2+ in the first heme pulls the iron ion into
the porphyrin ring, decreasing the affinity for the second oxygen.
(D) The binding of oxygen to Fe2+ in the first heme pushes the iron ion out
of the porphyrin ring, increasing the affinity for the second oxygen.
(E) Oxygen does not bind to deoxyhemoglobin.
42.Cysteine and methionine are unique among the twenty essential amino acids
in that they
(A) are chiral.
(B) contain sulfur.
(C) do not form dipolar ions.
(D) contain an aromatic ring.
(E) cannot join with other amino acids to form peptides.
43.Which nitrogen base is found in RNA but not in DNA?
(A) adenine (B) uracil (C) cytosine (D) guanine (E) thymine
44.The intermolecular force between bases on the opposite strands of DNA
responsible for its double-helical structure is
(A) ionic force. (D) dispersion force.
(B) hydrogen bonding. (E) dipole-dipole force.
(C) covalent bonding.
45.Which choice contains all three molecular units found in nucleotides?
(A) phosphate, sugar, amino acid
(B) phosphate, nitrogen-containing base, sugar
(C) carboxylic acid, sugar, protein
(D) amino acid, nitrogen-containing base, sugar
(E) sugar, amino acid, protein
46.The secondary structure of a protein is the
(A) configuration of those parts of the chain stabilized by a regular pattern
of covalent bonds between C and O groups of the backbone of the chain.
(B) configuration of those parts of the chain stabilized by a regular pattern
of hydrogen bonds between CO and NH groups of the backbone of the chain.
(C) specific order of amino acids in the chain.
(D) overall three-dimensional structure of the molecule.
(E) overall arrangement of several polypeptide chains into one functional unit.
47.An essential amino acid is one that
(A) contains no sulfur. (D) is necessary for vitamin production.
(B) must be included in the diet. (E) the body can synthesize.
(C) occurs in all types of proteins.
48.A polymer made in a polymerization reaction that also produces small molecules
(such as water) is classified as
(A) an addition polymer. (D) an elimination polymer.
(B) a condensation polymer. (E) a copolymer.
(C) a natural polymer.
49.Which of the following polymers is formed by a condensation process?
(A) PVC (B) nylon (C) Teflon (D) Plexiglas (E) neoprene
50.A protein that has been reversibly denatured has
(A) temporarily lost part or all of its primary structure.
(B) temporarily lost part or all of its secondary or tertiary structure.
(C) been genetically modified due to errors in the nucleotides in the parent DNA.
(D) temporarily lost its amino acid residues.
(E) temporarily lost the hydrogen bonding between nitrogenous bases.
Ans:
1~10:BBBBB BBBBB
11~20:CCCCC CCCCC
21~30:ECEEE EEEEE
31~40:AAAAA AAAAA
41~50:BBBBB BBBBB
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 61.57.135.121