化学专业外语练习题
1、c Which of the following belongs to phosphate?( sodium phosphite)
(a) PH3 (b) Na3PO3(c) Na3PO4 (d) P
2、b 1H and 2H are ____ and occupy the same position in periodic Table.
(a) isomers (b) isotopes (c) redox bodies (d) amphoteric compounds
3、d The ____ of a carbon is 12
(a) the weight of molecule (b) molecular number
(c) the weight of atom (d) atomic weight
4、Which of the following belong to nitrate? C
(a) NH3 (b) KNO3 (c) KNO2 (d) NO
5、Which of the following belongs to secondary amine? B
4、The number of outmost electron in carbon atom is _C_.
(a) 1 (b) 2 (c) 4 (d) 6
5、In reaction H2 + CuO — H2O + Cu, __B__ is reduced.
(a) H2 (b) CuO (c) Cu (d) H2O
6、Which of the following is charged? _C_
(a) atom (b) molecule (c) proton (d) neutron
7、Who first presented Periodic Table of elements? C
(a) Democritus (b) Boyle (c) Mendeleev (d) Dalton
8、Which of the following is classified into amine? B
(a) NH3 (b) CH3NH2 (c) NaNH2 (d) N2
9、The substances on the left side of the chemical equation are known as __d_ .
(a) reactant (b) reactor (c) reductant (d) reaction
10、Who first present the model of an atom in 1900s? b
(a) Plato (b) Dalton (c) Mendeleev (d) Boyle
11、Which of the following belongs to nitrite? b
(a) HNO2 (b) KNO2 (c) Mg3N2 (d) NH3
12、Which of the following belongs to metal? b
(a) selenium (b) sodium (c) Tellurium (d) Helium
13、d The elementary particle of ____ is uncharged. d
(a) proton (b) electron (c) ion (d) neutron
空调如何清洗14、d Bromine has ____ electrons in its outermost energy level. d
(a) 2 (b) 3 (c) 8 (d) 7
15、a Which of the following is non-metal?
(a) chlorine (b) lead (c) copper (d) mercury
16、a The atomic number of helium is ____.
(a) 2 (b) 4 (c) 3 (d) 0
17、d The horizontal rows of the periodic table are called ____.
洁面乳怎么用(a) energy level (b) groups (c) electron configuration (d) periods
18、a The symbol for element silver is ____.
(a) Ag (b) Sn (c) Hg (d) Au
19、c The atomic number of carbon is ____.
(a) 13 (b) 6 (c) 12 (d) 1
20、b Which of the following is inert element?
(a) hydrogen (b) helium (c) tellurium (d) potassium
21、c Which of the following belongs to halogen?
(a) carbon (b) lithium (c) fluorine (d) neon
22、a Which of the following belongs to noble gas?
水淀粉勾芡(a) neon (b) potassium (c) iodine (d) lead
23、a Which of the following belongs to alkali metal?
(a) silver (b) sodium (c) tellurium (d) bromine
24、b Which of the following belongs to metal halide?
(a) KClO3 (b) KCl (c) HCl (d) Cl2
25、a The ____ of carbon is is 1s22s22p2
(a) electron configuration (b) periodicity (c) general property (d) inertness
26、b The general property of metal is ____.
(a) soft (b) lustrous (c) flammable (d) toxic
天然洗面奶27、c Fluorine, chlorine, bromine and iodine belong to ____ group.
(a) alkaline metal (b) transition metal (c) halogen (d) alkaline earth metal
28、b Few reactions occur on helium and argon, so the two elements are chemically ____.
(a) reactive (b) inert (c) mild (d) strong
29、a The standard enthalpy for normal oxygen is ____.
(a) 0 (b) >0 (c) <0 (d) ≠0
30、c The maximum electronegative element in Periodic Table is ____.
(a) H (b) Na (c) F (d) He
31、b Which of the following belongs to the complex?
(a) FeF3 (b) Na3[FeF6] (c) Fe3O4 (d) Fe
32、d When solid NaCl is put into water, the solid “disappears”. The whole system is called ____.
(a) soluble (b) solvent (c) solubility (d) solution
33、d Mn2+ can be ____ to MNO4- by (NH4)2S2O8 in acidic solution.
(a) reduced (b) exchanged (c) substituted (d) oxidized
武汉长江二桥34、a Charged atoms are called ____.
(a) ions (b) protons (c) electrons (d) molecules
35、b Which of the following is classified into oxo-anion ?
(a) O2- (b) SO42- (c) S2- (d) S2-
36、a Reaction CH4 +Cl2→ CH3Cl + HCl is called ____ reaction.
(a) substitution (b) oxidation (c) reduction (d) exchange
37、c Benzene is often used as ____ both in laboratory and in chemical industry.
狗血喷头是什么生肖(a) solution (b) solvation (c) solvent (d) solute
38、c Standard entropy of any species is ____.
(a) 0 (b) ≤ 0 (c) ＞ 0 (d) both (b) and (c)
39、b If aqueous NaCl is wanted to separate, ____ is good choice.
(a) substitution (b) distillation (c) coordination (d) bond
40、b Alcohol is readily ____ and we smell it everywhere in air.
(a) soluble (b) volatile (c) reactive (d) precipitated
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