1、c Which of the following belongs to phosphate?( sodium phosphite)(a) PH3 (b) Na3PO3 (c) Na3PO4 (d) P2、b 1H and 2H are _ and occupy the same position in periodic Table.(a) isomers (b) isotopes (c) redox bodies (d) amphoteric compounds3、d The _ of a carbon is 12 (a) the weight of molecule (b) molecular number (c) the weight of atom (d) atomic weight4、Which of the following belong to nitrate? C (a) NH3 (b) KNO3 (c) KNO2 (d) NO5、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) 65、In reaction H2 + CuO H2O + Cu, _B_ is reduced.(a) H2 (b) CuO (c) Cu (d) H2O6、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) N29、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) Boyle11、Which of the following belongs to nitrite? b(a) HNO2 (b) KNO2 (c) Mg3N2 (d) NH312、Which of the following belongs to metal? b(a) selenium (b) sodium (c) Tellurium (d) Helium13、d The elementary particle of _ is uncharged. d (a) proton (b) electron (c) ion (d) neutron14、d Bromine has _ electrons in its outermost energy level. d(a) 2 (b) 3 (c) 8 (d) 715、a Which of the following is non-metal?(a) chlorine (b) lead (c) copper (d) mercury16、a The atomic number of helium is _.(a) 2 (b) 4 (c) 3 (d) 017、d The horizontal rows of the periodic table are called _. (a) energy level (b) groups (c) electron configuration (d) periods18、a The symbol for element silver is _. (a) Ag (b) Sn (c) Hg (d) Au19、c The atomic number of carbon is _.(a) 13 (b) 6 (c) 12 (d) 120、b Which of the following is inert element? (a) hydrogen (b) helium (c) tellurium (d) potassium21、c Which of the following belongs to halogen?(a) carbon (b) lithium (c) fluorine (d) neon22、a Which of the following belongs to noble gas?(a) neon (b) potassium (c) iodine (d) lead23、a Which of the following belongs to alkali metal?(a) silver (b) sodium (c) tellurium (d) bromine24、b Which of the following belongs to metal halide?(a) KClO3 (b) KCl (c) HCl (d) Cl225、a The _ of carbon is is 1s22s22p2(a) electron configuration (b) periodicity (c) general property (d) inertness26、b The general property of metal is _.(a) soft (b) lustrous (c) flammable (d) toxic27、c Fluorine, chlorine, bromine and iodine belong to _ group. (a) alkaline metal (b) transition metal (c) halogen (d) alkaline earth metal28、b Few reactions occur on helium and argon, so the two elements are chemically _.(a) reactive (b) inert (c) mild (d) strong29、a The standard enthalpy for normal oxygen is _.(a) 0 (b) 0 (c) 0 (d) 030、c The maximum electronegative element in Periodic Table is _.(a) H (b) Na (c) F (d) He31、b Which of the following belongs to the complex? (a) FeF3 (b) Na3FeF6 (c) Fe3O4 (d) Fe32、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 34、a Charged atoms are called _. (a) ions (b) protons (c) electrons (d) molecules35、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) exchange37、c Benzene is often used as _ both in laboratory and in chemical industry. (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 (