INORGANIC CHEMISTRY Past Paper 2019-08-08 PDF

Seat No. Republic of the Philippines PROFESSIONAL REGULATION COMMISSION Manila Board of Chemistry CHEMISTS...

Seat No. Republic of the Philippines PROFESSIONAL REGULATION COMMISSION Manila Board of Chemistry CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM - 12:00 PM INORGANIC CHEMISTRY SET A INSTRUCTION: Select the correct answer for each of the ANSWER for each item following questions. Mark ONLY ONE by shading the box corresponding to the letter of your choice on the answer sheet provided. STRICTLY NO ERASURES ALLOWED. MULTIPLE CHOICE 1. What is the formula for sodium diaquatetrachloroaluminate(1|)? Naa[A(H20)2CL] 11. Nas[AI(OHCl] IV. Naz[AI(H2O)(CIO4)s NaiAl(H2O2Cu] A. B IV C. D. 2. What is the oxidation state of nitrogen in magnesium nitride? A. +5 B. +3 C. -2 D. -3 3. Which equation shows conservation of mass and charge?. NHBr NHs + Br2 + 3Fe II.2Mg + I. H2SO4 Fe*> Mg" + LIOH>LLs0 + H20 IV.Cu + 2Ag> Cu" +2Ag B. D. IV C. total number of valence electrons in the thiosulfate ion? 4. What is the B. 34 A. 32 D. 30 C. 28 about the radli of atoms and their ions is CORRECT Which statement 5. than their atoms. and anions are both larger A. Cations thair atoms, anions are larger than their atoms. smaller than B. Cations are than their atoms, anions are smaller than their atome are larger C. Cations Continued on Page 2 TODS Ver. 1.0.0.0  CHEMISTS Lloensure Examination Tuesday, October 08, INORGANIC CHEMISTRY 2019-08:00 AM- 12:00 PM Page 2 D. SET A Cations and anions are both smaller than their atoms. 6. Boron has two The percent naturally occuming isotopes, B (10.0129370 amu) and "B abundance of the boron isotopes are %3 and. {11.0093054 amu). %B. A. 20.0, 80.0 C. 49.0, 51.0 B. 9.9, 90.1 D. 81.0, 19.0 7. What is the mass percent of oxygen in the compound, UO(CaHOa)z NH.CaHaO 6H,O (Mr= 573)? A. 16.8% 3. 39.1% C. 5.58% D. 22.3% 8. Which of these hydrated salts contains the greatest percentage of water by mass? A. BaCh 2HO B. Ni(CIo)2 6H,O C. CaCh 6H0 D. CusO4 5H20 9. What Is the maximum weight of SOs that couid be made from 40.0 g of SO2 and 8.0 the reaction below? g of Oz by 2SO2+O2250 A. 40.0 g B. 25.0 g9 C. 20.0 9 D. 31.3 g 10. The mineral beryl contains 5.03% berylium by mass and contains three beryllium atoms per formula unit. What is the formula mass of beryl? A. 537 g/mol B. 179 g/mol C. 270 g/mol D 950 g/mol 11, Calcium carbonate decomposes upon heaung to calcium oxide and carbon dioxide. What mass of solid calcium carbonate ls required to produce 2.40 lters of carbon dioxide measured at STP? A. 21.4 g B. 10.7 g C. 50.0Dg D. 100 formulas are XO% and X»O. One nd 12. An element X forms two oxides whose contalns 52% of X by mass and has a molar mass of 99.98. What is the formula ofthla n B. CrOs A. Mg2O D. K0s C. AlOs 13. Continued on Page 3 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM- 12:00 PM Page 3 INORGANIC CHEMISTRY SET A c h of the following hydrogen molecules has the highest vibrational frequeney (D= deuterium; T= Tritium) I. HD = HT V. 12 l. D t. H2 A. 1 C. IV 14. Which of the folowing electronic transitions is forbidden for a hydrogen-like atom? A. 2p- 3p B. 2p->1s C. 2p>3d D 2p-3s 5. Which of the foilowing molecules wil!l exhibit a pure rotattonal absorption spectrum?. C Il. HCI Il. CH IV. PFa A and ill only B. IlandIVonly C. Il only D. l and l only 16. Atomic nitrogen has a higher ionization energy than atomic oxygen. This is best explained by A. the fact that the electron ionized in N is from the 2s subshell, while that ionized from O is from the 2p subshell B. the lower electron-electron repulsion in nitrogen the fact that N has an odd number of electrons while O has an even number C. D. the greater effective nuclear charge of nitrogen 17. For the element with the electron configuration 1s 2s2 2p 3s2 one of the 3s electrons will be shielded from the nucear charge most effectively by a B. 2s electron A. 3s electron D. 1s electron C. 2p electron 18. CHEMISTS Licensure Examination Page 4 Tuesday, October 08, 2019 08:00 AM- 12:00 PM INORGANIC CHEMISTRY SETA Ine rolowing electronic transitions accur hen lithium atoms are sprayed hot lames. ne are numbered for identification. Which of these would result in the emission ot Hgnt: into a STeps V V 2s 2p > 3d > 3p- 4s- 20 A. All of the steps B , I1, andV only C.Ill and V only D. 1, IV, and V only 19. Electronegativity is a measure of. A. the energy required to remove an electron from an atom B. the magnitude of the charge of an electron C. the energy released when an electron is added to an atom D. the of atom to draw electron density towards itself ability an 20. The first ionization energy increases from left to right across the periodic table because of B. filled shells/subshells A. electranegativity D. atomic number C. effective nuclear charge 21. As you move down the elements of Group 1 of the periodic table, the first ionization energy A. increases and theelectronegativity decreases decreases and the electronegativity increases B decreases and the electronegativity decreases C D. increases and the electronegativity increases compounds contains only salts that are expected to be soluble in water? 22. Which series of. ZnS, KNO, CoS, PbCrOa 1. NaCl, KNO3, Zn(NOs)2, MgSO4 Zns I1. Ca(P04)2, Cr(OH)3, NaCl, IV. AgOH, Cu(OH)2, KCI, Nal B. II A. V D. Il C. (ease of oxidation) amongst the Group I and II elements 23. The chemical reactivity smallest for beryllium A is probably atomic number with increasing decreases within a group B for lithium largest C is probably from Group I to Group increases D. the atoms or chiorine, magnesium nann. correctly arranges 24. Which series Continued on Page 5 TODS Ver. 1.0.0.0 CHEMISTS Licensure Examination Page 5 Tuesday, October 08, 2019 08:00 AM- 12:00 PM SETA INORGANICCHEMISTRY order of increasing first ionization energy? A. CI, Mg, Ne, P B. Ne, Ci, P, Mg C. Mg. P, CI, Ne D. P, Mg, Cl, Ne 25. Which of the following ions has the smaliest ionic radius? I. K I1. Ca2 C V. Br B. A. D. II C. IV of increasing size? Na in order correctly arranges the atoms, Ba, Cs, Mg, 26. Which series Cs B. Mg < Na < Ba < Cs < Na < Mg < Ba A. < Ba < Na < Cs Ba < Mg < Na < Cs D. Mg C. Based on the building-up principle, last element in group 18 is radon, Rn (Z=86). 27. Currently, the element in group 18 electron configuration for the next abbreviated ground-state what would be the discovered or synthesized? should it be 6f14 6d10 7p [Rn] 7s 4f14 5d10 6p [Rn] 6s2 [Rn] 7s2 6d10 7p. IV. [Rn] 7s2 5f14 6d10 7p B. D. IV is isoelectronic? Which of the following pairs ofatoms/ions 28. IH. Br, Kr V. Cu, Zn I. Na, Na I. 02, $2 B. IV D. C. 11 possible for a 4d orbital? nodes are How many angular 29. 2 3 4 molecular orbital of BeH; the B. 2pB-(1SHA + 1SHB) 30. Identify 2SB-(1SHA+ 1SHB) D. 2Sse+ (1SHA- 1SHB) A. 1SHB) C. 2P2se + (1SHA bond? does NOT Contain a covalent compounds of the following B. CsF 31. Which A. GeCl4 Continued on Page 6 TODS Ver. 1.0.0.0  CHEMISTS Licensure Examination Page 6 Tuesday, October 08, 2019- 08:00 AM 12:00 PM INORGANIC CHEMISTRY SETA C. H2S D. PH 32. Which kind of attractive forces are likely to be holding paticles together in a substance that melts at 681° C, and conducts electricity when molten but not when solid? A. Metallic bonding B. Network covalent bonding D. Dipole-dipole interactions C. lonic bonding structure? 33. For which of the following may we draw both polar and non-polar Lewis B. SF:C4 NH D. BF C. PCls which of the given molecules exhibit 34. Using the molecular orbital electronic assignment, paramagnetism? I. B2 II. Na I1. O2 B. Il and lll only A. I, I, andIl land ll only I and ll only D. C. what are the formal charges on the sulfur and oxygen atoms, 35. In the Lewis structure shown below, respectively? B. 0, 0 A.-2,0 D +2, -1 C+6,-2 What are the shapes of these molecules, in the order molecules SCla, $Os, SOCl. 36. Consider the given? pyramidal, trigonal planar A. Linear, trigonal trigonal pyramidal Linear,trigonal planar, B. trigonal pPyramidal planar, C. Angular, tigonal planar, linear D. Angular, trigonal arranges the ions in increasing average N-O bond lenath 2 series correctly a7. Which Continued on Page 7 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Page 7 Tuesday, October 08, 2019 08:00 AM -12:00 PM SETA INORGANIC CHEMISTRY I. NO, NO, NO I. NO, NO", NO2 II. NO2, NOs, NO IV. NO, NO2, NOs IV B. II D.I Which of these are the hybrid. Fredict the given compounds. VSEPR geometrical structure of the oroital used by the central atom (underlined), the principal rotation axis, and the point group identifieda CORRECTLY?. SIF (sp, Ca. T) SFe (dsp, Ca, On) SO (sp, C2, Ds) IV. BCh (sp, C3, Cav B. I,I, and li only A. Ill and IV only C. I, 11, and IV only D. Iand li only 39. The smallest repeat unit of a crystaline solid is called a_ B. lattice point A. unit cell D. crystalline element C. point group hexagonal closest packing. What is the occurs as either cubic closest packing or 40. Solid calcium structures? differerce between these two most significant between calciurm atons in adjacent layers A the distance of calciurn atoms B. the placenment of layers nurnber of the calcium atoms in a single layer C. the coordination between calciumi atoms in a single layer D. the distance can be white, black, or red in color. The variations in of the element phosphorus 41. Solid sarnples color are due to different- 8. nuclear charges A. ionization energies D. molecular structures atomic masses. oxide whose unit cell is shown? is the formmula of the 42. What - Ce ions I1. CeO I. Ce20 IV. CeO2 I. CerO f'nntin TODS Ver. 1.0.0.00 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM INORGANIC CHEMISTRY 12:00 PM SETA Page & A. C. 1 B. D. IV 43. raphite reacts with potas sium to produce a compound with the empirlc al formula KCg. Which of the following is the best descriptlon of this compound's structure? K lons close I1. -packedwith polyhedral CG ions K lons close -packedwith polyhedral C" ions IIl. An expanded diamond lattice with K* ions in the tetrahedral holes.Negatively charged hexagonal carbon layers ith Intercalalted K ions between them. A. IV B. D.I 44. The lattice energy (energy required to separate the ions in an ionic solid) of MgO is much larger than that of LiF. What contributes the most to this dífference? A. Mgo contains doubly charged ions, while LiF contains singly charged ions. B. MgO contains more electrons than LiF. C. F is more electronegative than 0, and Li is more electropositive than Mg D. Mg is a smaller ion than Li', and 0" is a smaller ion than F 45. Which one of the foliowing choices correctly identifies the structure of all the substances shown in the table? All the substances pure and in their solid state? are Response format: [LiCI structure, HCl structure, graphite structure, K structure] [lonic, Molecular, Covalent network, Metallic) A B. [lonic, Metallic, Covalent network, Atomic] C. lonic, Molecular, Atomic, Metallic] Covalent network, Atomic] D. lonic, lonic, result from the electrolysis of molten KBr? 46. What products [product at the cathode, product at the cathodel Response format: B. Bra. K A. IK, Bral D. (K, O C. [O2 Ha] cations and xOs" anions crystallizes in a cubic lattice Tho Ant A7 A COmpound containingA cornerS, ine Ao Ions are centered on the face centers and at the a r e situated on the unit cell ca on the cation, An*? What is the charge center. body 8. +3 A. +1 D. +4 C. +2 with the cubic unit cell shown below. is an industriaily important semiconductor (Si atoms 48. Silicon Continued on Page 9 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Page 9 Tuesday, October 08, 2019 08:00 AM - - 12:00 PM INORGANIC CHEMISTRY SETA cell. tne COGd as black spheres). Determine how many Si atoms are contained in this unit ength of the edge of the unit cell is 0.543 nm. What is the density of silicon in g /cu. i h? A 1.17 g cu. cm B. 3.50 g cu. cm C 4.66 g cu. cm D a.2.33 g cu. cm 49. Which element exhibits the greatest number of oxidation states in its compounds? A B. Cu C. As D. Ca 50. Consider the following redox reaction. Which species is being oxidized? 2K,CrOHag) +2H20(0+3s(s) 2Ci:0s(aq)+4KOH(89)+ 35O:i9) 1. Cr. K 1. 02- IV. S A. IV B.D. I C. 51. The reaction of nitrogen dioxide with water yields B. HNO2 only AC. HNOsonly D. HNO, and NO NH and O2 52. Magnesium hydroxide is used in antacid tablets. It is a strong base, which is completely dissociated in water. What is the pH of a solution of magnesium hydroxide with a concentration of 0.0001 mol/ L at 25 c 10.3 B. 4 A. C. 8 D. 3.7 of the following solutiors will have the lowest pH2 53. Which A. NaCI (aq) B NaHPO NaF (ag) D NaHCOs (aq) c solutions would be the MOST BASIC? 54. Which of the following (K. for HOCI = 2.9 x 10) A. 0.10 M NaoCi M NaNO2 (K, for HNO = 5.1 x 104) B. 0.10 NaCN (Ka for HCN = 8.0 x 10-10) C. 0.10 M Continued on Page 10 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM- 12:00 PM Page 10 INORGANIC CHEMISTRY SETA D 0.10 M NaNOs (K, for HNO, 28) = 55 An analyst hes 10 mL of a solutlon that mght conteain any or all of the catlons, Mn° , Be.Ag and Cu at 0.01 M concentrations:. Addition of 10 mL of 1 MHCI causes a praclpltate to form. Aterthe precipltate Is fitered off, 1 M HSOA is added to the flitrate and another preciplitate forms. What is the second precipitate? MnSO4 Baso Ag2SOu A mixture of BaSO4 and Ag29O4 IV I D. I 56 What reaction will occur when a solution containing 1.0 M MgsO, and 1.0 M COCh is stored ina galvanized (Zn coated) bucket? Mg(s)+ Cla(g) > MgCh I1. Co*+SO >CoSO«(s) Co2 Zn(s) Zn2* +Co(s) Mg +Zn(s) > Zn* + Mg(s) IV B. A. D. C. V 57. Which series of compounds contains only salts that are expected to be slightly soluble or insoluble in water?. NaCl, KNO,, ZnS, PbCrO If. NaCl, KNO3, Zn(NOs)2, Na2S I11. ZnS, PbCrO, Ca,(PO)2, Cr(OH) PbCrO4, Cos V. ZnS, KNO,, B. A D. V C. solutions, one is Darium nitrate and the other lead nitrate, Which of the are two unlabelled 58. There unlabelea sOlutons to distinguish between them? added to the two allauina could be B. Sodium chloride Sodium carbonate A D. Sodium nitrate C. Sodium sulfate the concentratlons of the ions and molecules in a nitrous acid compares Which series correctly 59. Continued on Page 11 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Page 11 uesday, October 08, 2019 08:00 AM 12:00 PM INORGANIC CHEMISTRY SET A solution?. HaO= NO2> HNO2> OH 1. H30* = NO2 = HNO2 = OH II. HNO2 > HsO* = NO2> OH IV.HNO2 > NO2> H0 >OH A. IV BI D. 60. Lithium chloride is much more soluble in ethanol than is sodium chiloride. What accounts for this observation in terms of atomiclionic/molecular properties? Choose the CORRECT combination of statements. The smaller Li+ ion has a higher charge density than the larger Na+ lon. LiCl is more covalent than N aci. LiCI is more ionic than NaCl IV. Covalent compounds are more soluble in CaHsOH which has lower polarity. V. onic compounds are more soluble in C;H5OH which has lower polarity VI. Covalent compounds are more soluble in CaHOH which has higher polarity VIl. onic compounds are mre soluble in C2H$OH which has higher polarity B. 1, 1, and VIl A. I,1, and VI D. , T0, and V C. I, 11, and IV elements does NOT exhibit allotropy? 61. Which of the following Bromine A. Silicon L Tin C. Arsenic as individual molecules? 62. Which oxides exist II. SO2 I1. P.O10 I. AlO B ll only A. Iand ll only D. Il only C. Ionly strontium ion produce in a flame test? What color does the 63. B red A. blue D. yellow C. green molecule? stable is not a 64. Which B NFs A. PFs D PF3 C. NFs which compound is most acidic? solution of M 65. A 0.1 B. Ba(NOs)2 KNO A Fe(NOs) D. NHNO C. Continued on Page 12 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM- 12:00 PM Page 12 INORGANIC CHEMISTRY SETA 00. o r which one of the following pairs is the ratio of ionic radius to atomic radius The GREATEST? I.B3:B I1. AP: Al III. N: N IV.F:F A. I1 B. C. Il 67. Which molecule is the LEAST stable? A SF2 B SF C OF D OF2 68. Three monosulfur fluorides are known: I. SF2 II. SF4 II. SF Of these, polar species include A. Iand Il only B ! only C. Il and ll only D. 1 onlyy 69. In which gas-phase atom are the 2s electrons closest an average to the nucleus? A. Al B. C. Si D. N 70. Elemental silicon is oxidized by Oz to give a compound which dissolves in molten NaCO. When this solution is treated with aqueous hydrochloric acid, a precipitate forms. What is the precipitate? B. SiO2 A. SiCl C. SiCOs D SiH 71 What is the best explanation for the observa:ion that in the solid state, phosphorous pentachloride is an ionic compound? The significant difference between the electronegativities of P and Cl results in a greater ionic A. character in the P-CI bond. PCls disproportionates to PCI and PCta in the solid state B. is reduced to PCle. C. In the solid state, PCls ln the solid state, the chlorides in PCls are criented in configuration that results in a net D. negative charge. Nitrogen, Na, has the following properties: 72. normal melting point: 63.2'K normal boiling point: 77.4'K triple point: 0.127 atm, 63.1K crilical point: 33.5 atm, 126.0 K Continued on Page 13 TQDS Ver. 1.C.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM-12:00 PM Page 13 INORGANIC CHEMISTRY SETA Which statement about Na is correct? A Liquid Na is denser than solid Na. B. Liquid Na and gaseous Na can coexist at 63.1 K and 1 atm. C. If Na is heated from 60 K to 70 K at 0.100 atm, it sublimes. D. At sufficiently high pressure, Na can be liquefied at 150 K. 73. in the carbon monoxide complex, NaV(CO),1, what is the oxidation number of vanadium? A. +3 C. +6 B-1 D. +5 74. Which species has a trigonal planar geometry? (1) CIF (14) NCl (IH) CO, (IV) 1 A. IV B C. D. I 75. What are the geometric shape and the oxidation number of the copper atom, respectively. for the complex ion, [Cu(NH,)(OHahl"*?. tetrahedral; +2 II. square planar;-2 Il. octahedral; +2 IV. trigonal planar, +1 B. Ill D. IV ligands on this complex have a large crystal splitting; therefore, a higher energy photon field 76, "The." Which of the following choices willfill in the blank will be absorbed by the cORRECTLY? B chelate A. ligand C. complex ion Dvalenceelectron 71 Continued on Page 14 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM 12:00 PM Page 14 INORGANIC CHEMISTRY SET A he ion has SFs a square pyramid structure. The hybridization orbitals in sulfur is. I. spd I1. sp'd I. sp V. Sp V B. IlI D. 78 Ferric ion forms the complexes FeF and Fe(CN).*with fluoride and cyanide ions. Also, F is a weaker-field ion than is CN' in the spectrochemical series, i.e., F CN. We would expect FeF* to.. have a larger crystal field splitting energy than Fe(CN) I. have a smaller magnetic moment than Fe(CN) M. absorb light at a longer wavelength (lower energy) than Fe(CN)*". IV. be more soluble than FefCN)*. B. II C. IV D. II 79. Which of the following is the BEST description of the geometry of PCl? A. Trigonal Pyramid B. Square pyramid D. Trigonal Bipyramid C Octahedral 80 be separated into a pair of geometric isomers. Is this A coordination complex M(NH3)2Clh can with a tetrahedral or a square planar geometry at the metal center? observation consistent A It is consistent only with a tetrahedral geometry square planar nor a tetrahedral geometry. It is consistent with neither a B. It is consistent only with a square planar geometry. C. either a square planar or a tetrahedral geometry. D. It is consistent with of the following ions is/are diamagnetic? 81. Which I. Co IL.Mg? B. and Il only A Il and lll oniy D and lll only C Ill only 82 natini n d on Dann 15 TOnS Ver 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM - 12:00 PM Page 15 INORGANIC CHEMIsTRY SETA Which of the following best explains why coordination compaunds containing Cu are colored while coordination compounds containing Cu are not? T h e 3d orbitals in Cu' are completely empty so the transfer of an electron cannot occur..The 3d orbitals in Cu are completelyfilled so the transfer of an electron can occur..The 3d orbitals in Cu' are completelyfilled so the transfer of an electron cannot occur.. Cu' absorbs all wavelengths of visible light which makes it appear colorless. A I1 B. V C. D. 83 Which of the following complex ions is capable of cis-trans isomerization?. square planar [PtBrCl2 I1. octahedral [Fe(CN) 1. tetrahedral [ZnBrOCF IV. octahedral (CrBr(NHs) A. IV C. D. 84. Which of the following homoleptic carbonyl complexes would be expected to be the most reactive? A. Cr(CO)s B V(CO) C. Fe(CO)s D Coa(CO) following radioisotopes is commonly used for imaging of the brain, liver, and kidney? 85. Which of the B. C-14 A. To-99 D Na-24 C. Fe-19 radioactive decay by electron capture. Which statements about its decay 86. Ca-41 undergoes product are correct?.The decay product is an isotope of Sc. has a slightly la ger mass than Ca-14. I1. The decay product Neither I nor I 5. only A. Both I and lI D. Il only C. the following contains 24 neutrons? 87. Which of Continued on Page 16 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM 12:00 PM Page 18 INORGANIC CHEMISTRY SET A Which of the following contains 24 neutrons? I. 2Cr I. ,Mg i. 2aCr V. 2Cr A. IV B. C. I1 D. 88. A sample containing only the isotope *Mo undergoes radioactive decay as shown B 99Mo 1/2 65 99Te h 126h Which of the following statements about the relative activity of Mo and *"Tc in the sample is CORRECT? The activity of Tc exceeds that of theMo after about 20 h. about The activity of snc exceeds that of the "*Mo after 120 h.. The activity of s c becomes roughly equal to that of the "Mo after about 20 h. The activity of c becomes roughly equal to that of the *Mo after about 120 h. V B. A. D. I C. IV most common fuels used in nuclear power plants. On the other hand, 89. Uranium-235 is one of the fuel in a nuclear power plant. Which of the following statements uranium-238 cannot be used as a uranium-238 cennot be used as a fuel? best explains why Uranium-238 does not undargo decay. radioactive A. does not fission easily enough to be used undergo as a fuel. B. Uranium-238 uranium-238 in naturally occurring uranium to use it as a fuel. C. There is not enough D. Uranium-238 is not a naturally ocurring isotope of uranium. 90 undergoes an absorption of an alpha particle and release Which of the following transmute tions of a proton?.25 Upa D*Th%0 I. N, o I1. 2 U2> **Pa1 V. Als P15 A. B C. IV D. I antin1ad an a n a 17 TODS Ver. 1.0.0.0 CHEMISTS Licensure Examination uesday, October 08, 2019 08:00 AM - 12:00 PM Page 17 INORGANIC CHEMISTRY SET A 91 Br-82 has a half life of 36 hours.. A sample containing Br-82 was found to have an activity of 1.2x 10 disintegrations in 5 minutes. How many grams of Br-82 were present in the sample, assuming no other radionuclide is present.?. 5.1 x 10g N.8.4 x101 g i1. 5.8 x 10g IV. 1.1 x 10g B. D. V 92. Which of the following statements is FALSE? A. Alpha particles are more massive than beta particles. B. The larger the binding energy per nucleon, the more stable the nucleus. route by which unstable nuclei can spontaneously decay. C. Alpha particle production is the only of nucleus is always less than the original mass of its constituent protors and D The mass a neutronS. 93. decay of radium, *3aRa radioactive 2gRn+2He, For the when 10.2 of radium decays? what is the AE in kilojoules g 4.0015 g: 2*aRn= 221.9703 g: 2aRa 225.9771 g Mass (amu):"He = II. -2.4 x 10* kJ I. 2.2 x 10 kJ V. 5.3x 103 kJ.-2.2 x 10' kJ B. V A D. C. 94 x10 nuclei decays to 8.2 x10' nuclei A sample of a radioactive element that contains 1.0 its specific decay constant? minutes. What is in 10 II. 1.2 min I. 0.28 min IV. 0.062 min I.6.2min B. I A IV D. 1 C. of the following is an example of homogeneous catalysis? one 95. Which with gaseous bromine to form gaseous hydrogen bromide the reaction of gaseous hydroger A. palladium catalyst of oils to margarine with a B. the hydrogenation cell animal the breakdown of sugars in an C. Continued on Page 18 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 Page 18 AM 12:00 PM INORGANIC CHEMISTRY SET A D. the destruction of ozone gas in the stratosphere by gaseous nitrogen oxIdes. Which among the following species contributes most to the production of acid rain? A Nitric oxide 3. Phosphate detergents C Ozone D. FCs 9.Electrolysis is used in the industrial production of sodium hydroxide. Which of the given electrolytic cells is used for the industrial production of sodium hydroxide? Electrolysis is used in the industrial praduction of sodium hydroxide. VWhich of the given electrolytic cells is used for the industrial production of sodium hydroxide? Cel Anvde Cuthende **** an Clg H,L8 Nat A Y B Z C. None of these D. X 98. Rechargeable batteries include which of the following? !. dry cell il. lead-acid storage battery 11. nickel-cadmium battery Il only B. ll and ll only I and II only D. 1, , and llI 99 Some important industrial chemicals can be made by the electrolysis of brine. Which one of the at the anode in this process? following products is formed I. H II. NaOH I1. HCI V.Ch A. I B V C. 100. A simpilified section of the carbon cycle i shown below. Carbon atoms are oxidized in the reactions Continued on Page 19 TQDS Ver. 1.0.0.0 CHEMISTS Licensure Examination Tuesday, October 08, 2019 08:00 AM Page 19 - 12:00 PM INORGANIC CHEMISTRY SETA R natural carlbon gueose in starch dioxide plams pians A. Q and T only B. Q only C. Q,R, and T only S and Q only D. ***EN D *** WARNING Failure to submit your Test Questions (Complete) set will cause the cancellation of your Test-Results for the subject.