March 05, 2015

ONLINE TEST - Atomic Structure – II - EM


This Quiz is a Simple test for +2 Science group students which contain Questions asked from March - 2006 to March - 2017 in Atomic Structure – II. Just participate in it and test your skill.

  1. ___________would has the maximum de Broglie wavelength?
  2. Proton
    Neutron
    α - particle
    β - particle

  3. de Broglie equation is
  4. λ = mv / h
    λ = hmv
    λ = hv / m
    λ = h / mv

  5. Dual character of an electron was explained by
  6. Bohr
    Heisenberg
    de Broglie
    Pauli

  7. En = 313.6 / n2, If the value of En = – 34.84 to which value ‘n’ corresponds to
  8. 4
    3
    2
    1

  9. Energy levels of molecular orbitals have been determined experimentally by
  10. Spectroscopic studies
    X - ray diffraction
    Crystallographic studies
    None of these

  11. If the energy of an electron in the second Bohr orbit of H - atom is – E, what is the energy of the electron in the Bohr's first orbit?
  12. 2E
    - 4E
    - 2E
    4E

  13. In a molecule eight electrons are present in bonding molecular orbital and four electrons are present in anti-bonding molecular orbital. Its bond order is
  14. 3
    1
    2.5
    2

  15. Inter-molecular hydrogen bonding is present in
  16. HF
    H2O
    ethanol
    all of these

  17. Intramolecular hydrogen bonding is present in
  18. o - nitrophenol
    m - nitrophenol
    p - nitrophenol
    p - aminophenol

  19. Molecular orbital with the least energy is
  20. σ1s
    σ*1s
    π2py
    π *2py

  21. Number of spherical nodes in 2s orbital is
  22. 1
    2
    3
    4

  23. The bond order of nitrogen molecule is
  24. 2.5
    3
    2
    4

  25. The bond order of oxygen molecule is
  26. 2.5
    1
    3
    2

  27. The circumference of the circular orbit of an electron is an integral multiple of its
  28. frequency
    momentum
    mass
    wavelength

  29. The nature of hybridisation in IF7 molecule is
  30. sp3d
    sp3d2
    sp3
    sp3d3

  31. The hybridisation in CO32 ion is
  32. sp2
    sp3
    sp
    sp3d

  33. The hybridisation in ICl4 ion is
  34. sp3
    sp3d
    sp3d2
    sp3d3

  35. The hybridisation in PCl5 molecule is
  36. sp3d2
    sp3d
    sp3
    sp2

  37. The hybridisation in SF6 molecule is
  38. sp3
    sp3d
    sp3d2
    sp3d3

  39. The hybridisation in SO42 ion is
  40. sp3
    sp3d2
    sp3d
    sp3d3

  41. The hybridisation involved in XeF6 is
  42. sp3d3
    sp3d2
    sp3d
    sp3

  43. The momentum of a particle which has de-Broglie wavelength of 1 Å (h = 6.626 x 1034 kgm2s–1)
  44. 6.63 x 10–23kgms–1
    6.63 x 10–24 kgms–1
    6.63 x 10–34 kgms–1
    6.63 x 1034 kgms–1

  45. The hybridisation in NH4+  ion is
  46. sp
    sp2
    sp3
    sp3d

  47. Which of the following particles having same kinetic energy?
  48. α - particle
    proton
    β - particle
    neutron

  49. Which one of the following experiments confirmed the wave nature of electron?
  50. G.P. Thomson's gold foil experiment
    Black body radiation
    Photoelectric effect
    Millikan's oil-drop experiment

  51. Water exists in liquid state. This is due to
  52. high boiling point
    low boiling point
    freezing point is zero
    hydrogen bond

  53. Inter molecular hydrogen bonding is present in
  54. o - nitrophenol
    salicylic acid
    o - hydroxy benzaldehyde
    hydrogen fluoride

  55. The energy of electron in an atom is given by En =
  56. − 4π2me4 / n2h2
    − 2π2me2 / n2h2
    − 2π2me4 / n2h2
    − 2πme4 / n2h2

  57. The molecular orbitals are filled according to
  58. Pauli’s exclusion principle
    Hund’s rule
    Aufbau principle
    All the above

  59. Which of the following is paramagnetic?
  60. H2
    He2
    N2
    O2

  61. The value of Bohr radius for hydrogen atom is
  62. 0.529 x 10–8 cm
    0.529 x 10–10 cm
    0.529 x 10–6 cm
    0.529 x 10–12 cm

  63. In a molecule when Nb = 8 and Na = 2 then the bond order is
  64. 3
    4
    2.5
    2

  65. Shape of p-orbital is
  66. spherical
    clover leaf
    dumb-bell
    doughnut

  67. Which of the following particle having same kinetic energy, would have the maximum de-Broglie wave length?
  68. α - particle
    proton
    β - particle
    neutron

  69. Which molecule is relatively more stable?
  70. O2
    H2
    Li2
    N2

  71. The bond order of Hydrogen molecule is
  72. 0
    1
    3
    2

  73. The bond order of Lithium molecule is
  74. 2
    1
    0
    3

  75. The total valence electrons in BeCl2
  76. 18
    12
    16
    14

  77. The charge of an electron is determined by
  78. Thomson
    de-Broglie
    Milliken
    Einstein

  79. The hybridisation in XeOF4 molecule is
  80. sp3
    sp3d2
    sp3d
    sp3d3

  81. sp2 hybridization is not present in ____________
  82. CO32 –
    SO42 –
    NO3–
    NO2–

Thank you for participating in the Quiz & Click "Grade Me" to see your Result.

                                              Tamil Medium

10 comments:

  1. Replies
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      2. If your score for the answer is 1 your choice is correct.

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  2. Replies
    1. Click "Grade Me" to see your score.If your score for the answer is 1 your choice / answer is correct.
      visit - http://chem-brains.blogspot.in/2012/04/hyperlinks-for-quick-access.html. Click 1 Mark to View the Contents & to know the answer for all units

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    2. It will b nice if the correct ans are given in grade me

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