应用化学专业英语经典题

1.hydrogen is prepared by means of _ d _ _ reaction in lab。(a)substitution(b)decomposion(c)addition(d)displacement2.benzene reaction with Cl2 belongs to _ _ a _ _a)substitution(b)decompostion(c)addition(d)displacement3.the _ _ c _ _ elements from mono atomic moleges due to their filled valent electronic configurations。(a)re presentative(b)transition element(c)inert gas(d)p-block4.alkenes are producted in _ _ b _ _ reaction as described below(a)addition(b)elimination(c)displacement(d)substitution5.the _ _ c _ _ structure of CH4 has been verified by electron diffrac xtion because of SP3 hybridization。(a)flat square(b)parllel tetragonal(c)tetrahedral(d)tetragonal6.the octet rile si moly States that an atom tends to gain or lose eles until there are _ _ b _ _ elects in valent shell(a) 12 (b) 8 (c) 6 (d) 127.when water combine with pure cuso 4，a _ _ b _ _ cuso 4.5 H2O forms(a)hydrogen ate(b)hydrate(c)hydrabon(d)hydraride8.lyophobic colloic generally have _ a _ _ identity between their molecules and solve moleges。(a)attraction(b)electrostatic force(c)repulsion(d)electro negativity9.which of the following has minimum ionization energy？d(a) Li (b) Na (c) K (d) Rb10.the seawater is saline solution。to desaliate seawater is the process to _ d _ _ salt component(a)add(b)dilute(c)concentra te(d)remove11.there are(is)_ _ a _ paired elects in Hyder rogen(a) 1 (b) 2 (c) 3 (d)412.the valent electronic configuration for fluorine is _ _ c _ _ _ _(a)1 S2(b)2 S2(c)2s 2.2p 5(d)is 2.2 S2，2p 513.the octet means that the number of elects in _ c _ _ shell has to be eight。(a)inner most(b)the whole(c)outerost(d)no14.polysaccaries like cellulose and starch must first be subjected to _ a _ _ to form simpler sugar，such as monosaccaries。(a)dehyration(b)composition(c)hyrolysiis(d)comparison15.which of the following belongs to transition metal？d(a) S (b) Na (c) He (d) V16 addition of agno 3 in a solution generates white AgCl _ _ c _ _ that does not dissolve in HNO 3(a)solve(b)silica-gel(c)precipitate(d)solve1.the nature of organic species present depends on the degree of biochemical change of the original plant，c(a)pattern(b)fractions(c)subsances(d)ceramics2.I(py)2 appears to be present in solution c(a)be made(b)be dissolved(c)be detected(d)occur3.the m-f-m bridge bonds invarial have greater m-f distances than corresponding terminal m-f bonds . c(a)seldom(b)strongly(c)usually(d)never4.the chemical potential decreases and both the effect，i.e .solubility and normal temperature effect . b(a)for example(b)that is to say(c)through(d)approximately5.the m-f-m bridge bonds invarial have greater m-f distances than corresponding terminal m-f bonds . a(a)end(b)head(c)initial(d)intermediate6.the corresponding bromine-and chlorine-speces are less stable . b(a)compound(b)subsances(c)supports(d)elementsH2o2，hydrogen peroxide na2o2，sodium peroxide se，selenium f，fluorine br2，brominePc L3、phosporus trichloride hi、hydragen iodide agi、silver iodide I2、iodine I-、iodideIcl 3、iodine trichloride br-、bromide nf3、nitrogen trifluoride clf 7、chlorine hepta fluoride ccl 4、carbon tetra chloridehydration-combination with water moleges。1.the _ a _ _ _ ion can be considered s hydrated proton，h3o。(a)hydro gen(b)hydro xyl(c)hydraium(d)hydra XO2.chlorine is bubbled into aqueous sodium bromide，_ _ a _ _ is liberated(a)bromine(b)di bromide(c)bromide(d)bromide on3.which of the following is di atomic moleule？d(a) He (b) Ne (c) Ar (d) H24.which of the following is oxo anion？c(a) S2-，(b) HS-，(c) SO42-，(d) H2S1.in addition，for first order model the intercept of the straight line plots of log(QE-Qt)against b(a)therefore(b)further more(c)but(d)实际2.most fluorine compounds are obtained from fluor sparvia HF b(a)in(b)through(c)of(d)containingSncl 4、tin (iv) chloride FeCl 3、iron (iii) chloride pbcl 4、lead (iv) chloride sn2、tin(ii)iiiCacl 2、calium chloride i3-、triiodide ion CDC L2、cadmium chloride S2-、sulfide ionHgcl2、mercury (ii) chloride FeO、iron (ii) oxide Cu2O、copper (I) oxide O2-、oxide ionAlcl3、aluminum chloride CBR 4、carbon tetra bromide CDs、cadmium sulfide s22-、disulfideZno，zinc oxide V5，vanadium (v) ion Cr3，chromium (iii) ion SiO2，silicon dioxideSnc L2、tin (ii) chloride h、hyderrogren Mg2、magnessee o22-、peroxide ionk、potasium ion be2、beryllium ion TL、thallium (I) ion ti4、titanium (iv) ionPb2，lead (ii) ion br-，bromide ion se2-，selen ide ion Ca2，calium ion Fe2，iron (ii) ionSn4、tin (iv) ion hg2cl 2、mercury (I) di chloride Al3、aluminion1.the diversity of carbon compound is duo to formation of very long chain of carbon atom by the strong carbon-carbon _ _ d _ _ bond(a)io NIC(b)metallic(c)hyd rogen(d)covalent2.an inputant quantit