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Class 12 IIT JEE 2018 : Chemistry Allen

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Minty Badoni
Indian Institute of Technology (IIT) Bombay, Mumbai
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INORGANIC CHEMISTRY TARGET : JEE (ADVANCED) 2014 TEST SYLLABUS Date : 16.04.2014 TEST : PART TEST-1 (PT-1) Course : VIJETA (JPAD) & VIJAY (JRAD) Date : 14-04-2014 Syllabus : Inorganic Nomenclature, Periodic table, Chemical Bonding, DPP No. : 02 Coordination compound. This DPP & CT-1 is to be discussed (15-04-2014) DPP No. # 02 (JEE-ADVANCED) Total Marks : 169 Max. Time : 118 min. Single correct Objective (' 1' negative marking) Q.1 to Q.15 (3 marks, 2 min.) [45, 30] One or more correct objective ( no negative marking) Q.16 to Q.20 (4 marks, 2 min.) [20, 10] Single digit integer type (' 1' negative marking) Q.21 to Q.25 (4 marks, 3 min.) [20, 15] Double digit integer type (no negative marking) Q.26 to Q.29 (4 marks, 3 min.) [16, 12] Assertion and Reason (' 1' negative marking) Q.30 to Q.32 (3 marks, 3 min.) [09, 09] Comprehension (' 1' negative marking) Q.33 to Q.41 (3 marks, 2 min.) [27, 18] Match the Following (no negative marking) Q.42 to Q.45 (8 marks, 6 min.) [32, 24] 1. During the complete combustion of ethene C2H4, what change in hybridisation does the carbon atom undergo ? (A) sp3 to sp (B) sp3 to sp2 (C) sp2 to sp (D) sp2 to sp3 2. Which of the following substances does not exhibit H-bonding with water ? (A) CH3CH2OH (B) (C) CH3 CH2 CH3 (D) N(CH3)3 3. In which of the following pairs, the number of lone pair(s) and molecular geometry is same ? (A) TeCl4, PCl4+ (B) CIF3, PCl3 (C) SiCl4, BF4 (D) BrF5, XeF5 4. In which of the following, the -bonds can lie necessarily in same plane ? (A) Cl C C Cl 5. (B) O = C = O (C) (D) N2 What is the maximum number of electrons which can be accommodated in an atom in which the highest principal quantum number is 4 ? (A) 10 6. (B) 18 The ligand N(CH2CH2NH2)3 is : (A) tridentate (B) tetradentate (C) 36 (D) 54 (C) didentate (D) pentadentate Page No # 1 7. The correct name for the complex [Pt(NH3)2Cl4], which has maximum planes of symmetry is : (A) cis-platinum tetrachlorodiammine (B) trans-platinum tetrachlorodiammine (C) trans-Diamminetetrachloroplatinum(IV) (D) cis-Diammine tetrachloroplatinum (IV) 8. Which of the following pairs of coordination compound show same type of isomerism : (A) [Co(NH3)5Br] SO4 and [Ni(dmg)2] (B) [Pt(NH3)2Cl2] and [Co(en)2BrCl]Cl (C) [Co(NH3)6][Cr(CN)6] and K[PtCl3(C2H4)] (D) [Ni(en)3]2+ and [Pt(en)2]2+ 9. The correct electronic configuration for [CrF6]4 will be : (A) t2g4eg (B) e2 t2 (C) t2g3 eg1 10. 11. 4-nitrophenyl hydrazine is an example of : (A) a tridentate ligand (C) a monodentate ligand (B) a bidentate ligand (D) a tetradentate ligand What is the coordination number of La in the compound [La(EDTA) (H2O)4]. 3H2O (A) 6 12. (D) e4 t (B) 8 (C) 10 (D) 12 Which among the following will be named as dibromobis(ethylenediamine)chromium (III) bromide ? (A) [Cr(en)2Br2] Br2 (B) [Cr(en)2Br2]Br3 (C) [Cr(en)2 Br2] Br (D) [Cr(en)2Br3] O 13. 14. O C6H5 C CH C CH3 is called benzoylacetonato. Bis(Benzoylactonato)beryllium will show : (A) structural isomerism (B) geometrical isomerism (C) optical isomerism (D) None of these In which of the following pairs of elements the electronegativity of the first element is less than that of second element : (A) Zr, Hf 15. (B) Li, K (C) Cl, S (D) F, Cl Which of the following can not show linkage isomerism : NH2 (B) NO2 (A) (C) OCN (D) N3 S 16.* Which among the following is stronger lewis bases than HN(SiH3)2 ? (A) NH3 (B) H2N(CH3) (C) H2N(SiH3) (D) Page No # 2 17.* Solutions of the complexes [Co(NH3)6]2+, [Co(H2O)6]2+ and [CoCl4]2 are colored. One is pink, one is yellow and one is blue. Which of the following is/are correct matching of complexes with their colors ? (A) [Co(NH3)6]2+ yellow , [CoCl4]2 blue (B) [Co(H2O)6]2+ pink , [Co(NH3)6]2+ blue (C) [Co(NH3)6]2+ pink , [Co(H2O)6]2+ blue (D) [CoCl4]2 blue , [Co(H2O)6]2+ pink 18.* Which of the following is/are correct ? (A) vander Waal s radius of iodine is more than its covalent radius (B) All isoelectronic ions belong to the same period of periodic table (C) First ionisation energy of Be is more than that of C (D) Electron affinity of N as well as noble gases is negative. 19.* How many nodal suface can be present in the molecular orbital formed by the overlap of s and px (X axis is the molecular axis). (A) 2 (B) 1 (C) 3 (D) None of these 20.* Which of the following show intramolecular hydrogen bonding (A) salicylaldehyde (B) O-nitrotoluene COOH (C) p-nitrophenol (D) hydrogenpthalate ion COO 21. 22. O O || || CH C CH CH C O . How many types of C O bond length are present in 3 2 | OH How many of the following compound can be optically active ? (a) [Co(en)2ClBr] (b) [Co(en)(NH3)2Cl2]+ (c) [Cr(NH3)4Cl2]+ (e) [Co(en)3]3+ (i) [Cr(dmg)3] (f) [Ni(dmg)2] (g) [Pb(EDTA)]2 23. The sum of oxidation state of Co and Cr in the following complex is : [Co(NH3)6] [Cr(NH3)2Cl4]3 24. How many of the following species use d z 2 orbital in their hybridization ? (a) [Ni(CN)4]2 (e) [Cr(NH3)6]2+ (b) [CoBr4]2 (f) [Cu(NH3)4]2+ (c) NH4Cl (g) [FeF6]3 (d) [Co(NH3)3Cl3] (h) [Cr(ox)2(dmg)]2 (d) XeF4 (h) I3 25. Find total N-Cr-O bond angles in tris(glycinato)chromium (III). 26. Find the value of x + y where x and y indicate number of H atoms in H x Fe(CO)4 and Hy Re(CO)5 respectively. (EAN rule is followed). Page No # 3 27. 28. 29. How many of the following relations is/are correct ? (a) Mg > Al (electropositive character (b) Al > Ga (electronegativity) (c) N+ > N (Ionization energy) (d) Se > S (magnitude of egH) (e) He+ > H (Atomic size) (f) O22 < O2 (paramagnetic nature) (g) C2 > N2 (Number of bonds) (h) F2 > B2 (bond order) (i) B2 > F2 (bond length) (f) NO 2 > NO3 (bond angle) How many N atoms in cyanuric amide (melamine) are sp2 hybridized ? Me O Me Si Si Me Me controlled O O a (Si(Me)xCly) + water condition Si Me Me What is the value of a + x + y ? DIRECTIONS : Each question has 4 choices (A), (B), (C), and (D) out of which ONLY ONE is correct. (A) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1. (B) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1. (C) Statement-1 is True, Statement-2 is False. (D) Statement-1 is False, Statement-2 is True. 30. Assertion : K3[Fe(CN)6] is an inner orbital complex where as K3[FeF6] is an outer orbital complex. Reason : CN being a strong ligand, pairs electrons of Fe3+ and we get d2sp3 hybridization. But F being weak ligand do not pair electrons in Fe3+. 31. Assertion : H2S is less acidic than H2Te Reason : As the size of Te is more than S, the bond Te H is weaker than S H 32. Assertion : Atomic size in Na is larger than Al. Reason : Number of shells in Na are more than in Al. Comprehension # 1 Answer the questions based on the following reactions : CuSO4 + excess NH3 X CuSO4 + KCl Y excess Page No # 4 33. The color of species X and hybridization of Cu2+ in it are respectively. (A) Deep blue and sp3 (C) Deep blue and dsp2 34. (B) Blue and sp3 (D) Black and dsp2 The name of Y is : (A) Potassium (tetrachloride) disulphate copper (II) (B) Potassium tetrachloridocuprate (II) (C) Potassium tetrachloridocopper (II) (D) Dipotassiumcuprate(II) chloride 35. To Y, excess KCN is added due to which a highly stable complex results. This complex is : (A) [Cu(CN)4]2 paramagnetic (C) [Cu(CN)4]3 diamagnetic (B) [Cu(CN)6]4 paramagnetic (D) [Cu(CN)6]5 diamagnetic Comprehension # 2 Sulphur forms numerous compounds and show variety of oxidation states. It also exhibit a good tendency of catenation. It forms variety of oxoacids and oxoanions also. Sulphur also occur in several biomolecules and is also used in chemotherapy as sulphadrugs. 36. Sulphapyridine was shown to be effective against pneumonia What is the hybridization of S in this compound . (A) sp2 (B) sp3d (C) sp3 (D) sp3d2 37. NH2 SO3H is called as sulphamic acid . NH2 CO2H is called as carbamic acid. Using this knowledge, find which formula is correctly matched with name ? (A) Calcium sulphamate Ca(N SO3H) (B) Aluminum phyrophosphate Al2(P2O7)3 (C) Sodium carbamate Na(NH2 COO) (D) Ammomium thiosulphate (NH4)S2O3 38. Among the following compounds of sulphur, which contain no S S bond ? (A) H2S2O5 (B) H2S2O3 (C) Na2S4O6 (D) CaS2O7 Comprehension # 3 Electronegativity is a feature which is relative and depends on several factor like oxidation number, hybridizations etc. For instance, the electronegativity of differently hybridized carbon are : sp 2.99 2 sp 2.66 3 sp 2.48 Page No # 5 39. 40. Which of the following contain all carbon of equal electronegativity ? (A) Propene (B) Propan-1-diene (C) Cyclopropene (D) Cyclopropane Which of the following is correct ? H3C CH3 , H2C = CH2 , (a) (b) HC CH (c) (A) The C C bond is of equal strength in (a) and (b) (B) The C C bond is stronger in (a) than (c) (C) The C C bond is stronger in (b) than (c) (D) The C C bond is stronger in (c) than (a) 41. 42. 43. The direction of dipole of C 0 is . This means there is slight positive charge on O. This can be explained by : (A) higher electronegativity of O (B) sp hybrization of C (C) positive formal charge on O (D) All of these Column I (A) Na3[Co(ox)3] Column II (p) Show geometric isomerism. (B) [RhCl(CO)(PPh3)(NH3)] (q) Low spin complex. (C) K[Cr(NH3)2(CN)4] (D) Ba[CoBr2Cl2] (r) Paramagnetic with more than two unpaired electrons. (s) Show colligative property corresponding of two particles per formula. (t) Electrically conducting. Column I (A) MnO4 Column II (p) Paramagnetic and colored. (B) MnO42 (C) [Cu(CN)4] (D) Ni(dmg)2 44. (q) Diamagnetic and colored. 3 (r) Diamagnetic and colorless (s) Tetrahedral complex. (t) Square planar complex. Column I (1) XeO2F4 Column II (p) Central atom is sp3 hybridized with no lone pair on it . (2) SO2Cl2 (q) Central atom is sp2 hybridized. (3) COCl2 (r) Central atom was d x 2 y 2 orbital in (4) HClO3 (A) (C) (1) p r (2) q p (3) r q (4) s s (B) (D) hybridization. (s) Contain central atom in oxidation state , two less than the highest. (1) (2) (3) (4) r s q p s p q r Page No # 6 45. Column I Column II (1) B > Be > Li (p) Electronegativity (2) Na < K < Rb (q) Ionization energy (3) Zn > Ca (r) Atomic radius (4) S > Se (s) Metallic nature. (t) Acidic nature of oxide (A) p, t (B) r, s (C) p, q, t (D) p, q, t ANSWER KEY DPP No. # 01 (JEE-ADVANCED) 1. (C) 2. (D) 3. (B) 4. (C) 5. (B) 6. (A) 7. (D) 8. (C) 9. (B) 10. (A) 11. (B) 12. (B) 13. (B) 14. (A) 15. (A) 16. (AD) 17. (ABC) 18. 22. 4 23. 5 24. 2 ((i), (v)) 28. 15 29. 48 30. (D) 31. 35. (C) 36. (B) 37. (C) 38. 42. 44. (ABCD) 19. (ACD) 20. (ACD) 21. 5. 25. 6 26. 44 27. 25 (B) 32. (B) 33. (D) 34. (A) (A) 39. (D) 40. (D) 41. (A) (A) q, r ; (B) s ; (C) p ; (D) q 43. (A) p,q,t ; (B) p,r,s,t ; (C) r,s, ; (D) p,s (A s); (B p, q); (C q, s) ; (D q, r) 45. (A p, q) ; (B q) ; (C q, s, t) ; (D r, t) Page No # 7 Page No # 8

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