1. What is %wt of NO2(g) in a gaseous mixture of NO2 & N2O4, if VD of mix is 38.3
  2. What is molality of solution of I2 in benzene where mole fraction of I2 is 0.6?
  3. Relation btw different concentration units
  4. Reduced mass concept
  5. Graphs in photoelectric effects
  6. Analysis of radial distribution function graphs
  7. What is 11 th ionisation energy value of sodium?
  8. Which type of radiation(visible/UV/IR) is involved in transition 3–2 of He+?
  9. Double titration
  10. Back titration
  11. % of free SO3 in oleum
  12. Volume strength of H2O2
  13. What is pH of 0.1 M NaHCO3 if pka1 & pKa2 of H2CO3 are given?
  14. What is pH of 0.1 M H2S if its pka1 & pKa2 are given?
  15. Acid-Base Titration curves
  16. Indicators & its pH
  17. Which oxidising agent is stronger than F2?
  18. Which is better oxidising agent ; KMnO4 or K2Cr2O7 ?
  19. KMnO4 is better oxidising agent in Which -(a) acidic  (b) basic (c) neutral medium?
  20. Complete reaction btw (a) (aq) CuSO4 & aq KI ; (b) Pb3O4 & Conc HNO3 ; (c) Na2B4O7 + H2O;    (d) I2 & HYPO solution;   (e) Cl2 & Na2S2O3;   (f) KO2 + H2O ; (g) S + OH-
  21. Why solubility of hydroxides increase & of sulfides or carbonates decrease down the group in alkaline earth ,metals?
  22. Order of size: (a) Zr = Hf (b) Nb = Ta  (c) Fe=Co = Ni (d) Al > Ga
  23. Exceptional orders of IE or EA
  24. What is correct acidic character order of (a) HNO3, H2SO4, HClO4 (b) HF, HCl, HBr, HI (c) HOF, HOCl, HOBr, HOI (d) H3PO2, H3PO3, H3PO4
  25. Order of BP : HF < NH3 < H2O < H2O2
  26. As per activity series, identify weakest oxidants & weakesr reductants.
  27. Use of common ion effect in Group 2 & gr.4 of salt analysis
  28. In which cases, Cis-alkenes are more stable than trans-alkenes
  29. SIR effect/ Bredt Rule
  30. Ortho Effect & its exception
  31. Conformational Enantiomerism
  32. Stereoisomerism in open-chain cumulenes
  33. Anti-Aromaticity
  35. Cross-conjugation
  36. 1,2,3-trimethylcyclopropane & 1,2-dimethylcyclopropane, both has two geometrical isomers. how?
  37. All C-C bonds in benzene are identical but in Naphthalene  are not equal. explain
  38. pent-4-yn-2-one(MeCOCH2C#CH) upon oxymercuration demercuration gives MeCOCH2CH2CHO, explain?
  39. Rate of nitration : C6H6 = C6D6=C6T6 whereas rate of sulfonation : C6H6 > C6D6 > C6T6. why?
  40. 1-chlorobutane gives 1-butene with alcoholic KOH but 1-butanol with Conc. H2SO4 gives trans-2-butene as major products. explain why
  41. Nitrobenzene is used as solvent in friedal craft’s alkylation, explain
  42. Pyridine, aniline, nitrobenzene, benzoic acid does not give friedal craft reactions. why?
  43. Why 10-annule is non-aromatic?
  44. Certain o-dibstituted biphenyl compounds are optically active. how?
  45. Bi-naphthol is optically active. why?
  46. Why -CH2SH has greater priority over -COOH in R,S or E,Z- nomenclature?
  47. “Z- configuration always refers to cis-configuration” is a false statement.why?
  48. propadiene is non-planar but buta-triene is planar. why?
  49. Cyclo-hexa-1,3,5-triene is a hypothetical molecule. why?
  50. CO & NO have very low value of dipole moments(~0.1 D). why?
  51. Allyl carbanion & Benzyl carbanion are planar whereas methyl carbanion is pyramidal.why?
  52. CH3 free radical is planar, but CF3 free radical is pyramidal. why?
  53. Cyclopropane is more acidic than propane. why?
  54. phenol,aniline, anisole,cyclopropane, Styrene  gives (+ve) Br2 water test, but benzene & tetraphenyl ethene does not. Why?
  55. Dipole moment order: (a) Me3NO <Me3 PO (b) MeCl > MeF whereas HF > HCl
  56. Dipole moment order: (a) HF, H2O, NF3, NH3, H2S (b) MeCl > MeF whereas HF > HCl
  57. Bond angle order: (a) H2O, NF3, NH3, H2S  (b) Me3N, (SiH3)3N
  58. Bond angle Order : (a)  SO2 = SO3 (b) Cl2O > H2O > F2O
  59. Bond angle order: (a) NH3 > PH3 but NF3 < PF3
  60. Bond Energy Order: (a) C-C < C-H (b) C-C > Si-Si but N-N < P-P , O-O < S-S (d) Cl2 > Br2 > F2 > I2
  61. Bond order decreases when N2 (3) forms N2+ (2.5) but increases when CO(3) forms CO+ (3.5). why?
  62. Glucose, fructose & mannose are tautomers. how?
  63. pKa1 of maleic acid is lesser than of fumaric acid for first ionisation but reverse is true for second ionisation. why?
  64. Triphenylmethyl carbanion is planar. why?
  65. Cyclobutadiene exist predominantly as rectangular form than square. why?
  66. Cyclo-octatetraene  is non-planar but its di-anion or di-cation are planar. why?
  67. What is IUPAC name of  HOOC-CH2-CH(COOH)-CH2COOH?
  68. Cyclic alpha-diketones are more stable in enolic form whereas acyclic alpha-diketones are more stable in keto- form. why??
  69. Compare and explain Enolic % of Acetylacetone, acetoacetic ester, malonic ester.
  70. Why acidic character order is HCOOH > C6H5COOH > CH3COOH?
  71. Why basic character order is Me2NH > MeNH2 > Me3N > NH3?
  72. Why basic character order is Et2NH > Et3N > EtNH2 > NH3?
  73. Why geminal-diols are unstable but chloral hydrate, ninhydrin & cyclopropanone hydrate are highly stable?
  74. Why 1,3,5-benzenetriol gives reactions characteristics of keto group?
  75. Tropolone(2-Hydroxy-2,4,6-cycloheptatrien-1-one) behaves like a phenol rather than keto compound.why?
  76. Acidic character of Tropolone is in between that of phenol and benzoic acid, explain.
  77. Dianion of squaric acid (3,4-Dihydroxycyclobut-3-ene-1,2-dione) is aromatic but
  78. Order of Covalent chracter : NaCl < CuCl, CaCl2 < HgCl2  but SF2 > SF4 > SF6. why?

  79. AgCl is white, but AgBr & AgI are coloured, why?
  80. Order of stability of singlet carbene: :CH2 > :CF2 > :CCl2 > :CBr2 > :CI2 & Order of Stability of Triplet Carbene: :CI2 > :CBr2 > :CCl2 > :CF2. Explain
  81. Discuss hybridisation & bonding in  Borax, Si2H6, H2S4O6, H2S2O3, triplet carbene, (XeF5)-, (XeO6)4-, (H3)+, (H3)-, (HF2)-, B2H6 .
  82. Why H3+ is triangular but H3- is linear?
  83. Me-CH=S=O is non-linear group & exhibits geometrical isomerism. explain
  84. Cyclohexane has non-planar ring & Benzophenone is a non-planar molecule. explain
  85.  H2O2, NH2OH, NH2-NH2, CH3-CH=CH2, CH2=CH-CH=CH2, Biphenyl, Cyclohexane, acetic acid -All exhibits conformational isomerism. How?
  86. Cyclo-octene has three stereoisomers & trans-cyclo-octene is optically active, Cyclohexene doesnot exhibit geometrical isomerism. how?
  87. Isopentane upon monobromination gives Me2C(Br)CH2CH3 but upon monochlorination gives Me2CHCH(Cl)CH3 as major products. how?
  88. MethyleneCyclohexane when reacted with NBS give two products & major product is bromomethylcyclohexene. explain
  89. Naphthalene upon sulfonation gives 1-naphthalene sulfonic acid 80 DEGREE centigrade but at 160 degree centigrade, 2-naphthalene sulfonic acid as major products. Why so?
  90. What is Beckmann rearrangement, Corey house synthesis, E1CB mechanism?
  91. Aqueous solution of borax is used as buffer. how?
  92. Ionisation energy order : N2 > Xe= O2 > NO. explain
  93. Lassaigne test of nitrogen is not given by ……
  94. Oxidation state of Sulphur in H2S2O3 is -2 & +6 instead of zero & +4. How?
  95. Oxidation state of Iron in Brown ring,[Fe(H2O)5)NO]SO4 is +1 instead of +2 or +3. explain
  96. Three unpaired electrons are present in Brown ring,[Fe(H2O)5)NO]SO4 instead of four. why?
  97. How many 3c-2e bonds are present in B4H10?
  98. All many atoms are planar in I2Cl6. how?
  99. What is structure of B4H10, B12, I2Cl6, I4O9?
  100. How many vertices, faces and edges are present in icosahedron & square antiprismatic structure?

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