化學(xué)專業(yè)外語練習(xí)題

化學(xué)專業(yè)外語練習(xí)題化學(xué)專業(yè)外語練習(xí)題/15(a)cyclohexene(b)cyclohexanone(c)cyclohexyl(d)cyclohexanecarboxylicacid146、aPrecisely,themolecularweightofpolymer,oftengreaterthan107,equalstothatofmultipliedbydegreeofpolymerization.(a)monomer(b)mole(c)covalentbond(d)radical147、bVulcanizationofrubberreferstoadditionofsomeintheframeworkofrubberbody.(a)vanadium(b)sulfur(c)chlorine(d)nitrogen148、cWhenthedegreeofpolymerizationreacheslessthan20,wesaythepolymeris.(a)theintermediate(d)thedistillate(c)oligomer(d)monomer149、cAtthetopofthedistillationtower,thereisatocoolthevaporintorefluxliquidandtorecycleintothetower.(a)heatexchanger(b)furnace(c)workingtank(c)condenser150、blnsulfuricacidindustry,elementalsulfuriscombustedintogeneralsulfurdioxide.(a)fractionatingtower(b)furnace(c)steamstripper(d)workingtank151、cAtthebottomofthedistillationtower,thereisa(an)toboiltheliquidintovaporandtorecycleintothetower.(a)still(b)auxiliary(c)tank(c)boiler152、dIfanewbondbetweenpolymericchainsisdeveloped,theprocessiscalled.(a)covalence(b)side-chain(c)fabrication(d)cross-linking153、aWhichoffollowingbelongstosyntheticpolymer?(a)plasticfilm(b)silk(c)cellulose(d)starch154、aCopolymersarederivedfrompolymerizationofmonomers,suchasC6H5OHandHCHO.(a)different(b)usual(c)thesame(d)conventional155、dAnycommodityshouldhaveatechnicaliftheygointopubliccommerce.(a)specific(b)specify(c)specialty(d)specification156、cTheofZn-Cualloy(solidsolution)isasfollow:30%Znand70%Cu.157、dAsaconvention,[Cu(NH3)4]SO4isneverconsideredasalt,buta.(a)composite(b)component(c)composition(d)complex158、bAftersynthesisofaproduct,theproductmustbe___becausethemixturecontainsthedesirableproductsaswellastheremainingreactants,catalysts,by-products.(a)pre-treated(b)post-treated(c)blended(d)eliminated159、aWhenethanolisdissolvedintowater,asolutionisdeveloped.(a)homogeneous(b)heterogeneous(c)viscose(d)latent160、aThereactionH2+O2H2Ois.(a)exothermic(b)endothermic(c)isothermal(d)thermodynamic161、cWhichofthefollowisusedasthesemi-conductormaterial?(a)Fe(b)N2(c)Si(d)He162、cHomopolymersarederivedfrompolymerizationofmonomers,suchaspolyethylene.(a)different(b)usual(c)thesame(d)conventional163、aActivatecarbonisoftenusedasadsorbentinlaboratoryduetoitslargesurface.(a)specific(b)specify(c)specialty(d)specification164、bToobtainpuresubstancefromthemixture,isagoodchoice.(a)catalysis(b)purification(c)reactordesign(d)solubility165、dIfareactioniscarriedoutataveryhighpressure,isagoodchoice.(a)furnace(b)fractionatingtower(c)heatexchanger(d)autoclave166、dWhichofthefollowingisclassifiedintopolymer?(a)formaldehyde(b)sil