March 05, 2015

ONLINE TEST - d - Block Elements - EM

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

  1. A metal which precipitates gold from its aurocyanide complex is
    2. Cr
    Ag
    Pt
    Zn

  2. Bordeaux mixture contains
    3. AgNO3 + HNO3
    ZnSO4 + H2SO4
    CuSO4 + Ca(OH)2
    KMnO4 + HCl

  3. Copper is extracted from
    4. Cuprite
    Copper glance
    Malachite
    Copper pyrites

  4. Ferrochrome is an alloy of
    5. Cr, C, Fe, N
    Cr, Co, Ni, C
    Fe, Cr
    Cr, Ni, Fe

  5. Formation of coloured ions is possible when compounds contain
    6. paired electrons
    unpaired electrons
    lone pair of electrons
    none of these

  6. If the magnetic moment value is 5.92 BM, the number of unpaired electrons is
    7. 5
    3
    4
    6

  7. K2Cr2O7 reacts with KI and dilute sulphuric acid and liberates
    8. O2
    I2
    H2
    SO2

  8. Paramagnetism is the property of
    9. paired electrons
    completely filled electronic sub-shells
    unpaired electrons
    completely vacant electronic sub-shells

  9. Silver obtained from silver coin is purified by fusion with
    10. AgNO3
    HNO3
    H2SO4
    borax

  10. Silver salt used in photography is
    11. AgCl
    AgNO3
    AgF
    AgBr

  11. Spitting of silver can be prevented by covering the molten metal with a thin layer of
    12. borax
    charcoal
    sand
    silver bromide

  12. The catalyst used in the manufacture of polythene is
    13. V2O5
    Fe
    Mo
    TiCl4

  13. The chemical composition of slag formed during the smelting process in the extraction of copper is
    14. Cu2O + FeS
    FeSiO3
    CuFeS2
    Cu2S + FeO

  14. The colour of Purple of Cassius is
    15. purple (or) red
    blue
    bluish green
    apple green

  15. The correct electronic configuration of copper atom is
    16. 3d10 4s2
    3d10 4s1
    3d9 4s2
    3d5 4s2

  16. The general outer electronic configuration of d block elements is
    17. (n–1)dl–l0
    (n–1)d1–10 nsl–2
    (n–1)d10 nsl–2
    (n–1)d5 ns1

  17. The ion with maximum number of unpaired electrons is
    18. Mn2+
    Ti3+
    V3+
    Fe2+

  18. The metal used in galvanising iron sheets is
    19. chromium
    zinc
    copper
    silver

  19. The number of unpaired electrons in Ti+3 is 1. Its magnetic moment in BM is
    20. 1.414
    2
    1.732
    3

  20. The outer / outer most electronic configuration of chromium is
    21. 3d6 4s0
    3d5 4s1
    3d4 4s2
    3d3 4s2 4p1

  21. The reagent which is added first in the separation of silver from silver coin is
    22. Conc. sulphuric acid
    Conc. hydrochloric acid
    Conc. nitric acid
    Aqua regia

  22. The substance used in making ruby-red glass and high class pottery is
    23. colloidal silver
    purple of Cassius
    ruby silver
    ruby copper

  23. Which transition element shows the highest oxidation state?
    24. Sc
    Ti
    Os
    Zn

  24. The transition element with the lowest atomic number is
    25. scandium
    titanium
    zinc
    lanthanum

  25. Which compound is formed when excess of KCN is added to an aqueous solution of CuSO4?
    26. Cu(CN)2 / Cu2(CN)2
    K2[Cu(CN)6]
    K[Cu(CN)2]
    Cu2(CN)2 + (CN)2

  26. Which of the following compounds will not give positive Chromyl Chloride Test?
    27. CuCl2
    C6H5Cl
    ZnCl2
    HgCl2

  27. Which of the following is wrong statement regarding K2Cr2O7?
    28. Oxidising agent
    Used in tanning industry
    Soluble in water
    Reduces ferric sulphate to ferrous sulphate

  28. Which of the following ions will give colourless aqueous solution?
    29. Ni2+
    Cu+
    Cu2+
    Fe2+

  29. Which of the following pairs have almost equal radii?
    30. Mo, W
    Y, La
    Zr, Hf
    Nb, Ta

  30. Which one of the following will have maximum magnetic moment?
    31. 3d2
    3d6
    3d7
    3d9

  31. The most malleable and ductile of all metals is
    32. silver
    gold
    copper
    zinc

  32. A ‘d’ block metal ion has a magnetic moment of 1.732 BM. The number of unpaired electrons are
    33. 1
    2
    3
    4

  33. Among the following statement, the incorrect one is
    34. Calamine and siderite are carbonates
    Argentite and cuprite are oxides
    Zinc blende and pyrites are sulphides
    Malachite and azurite are ores of copper

  34. d-block elements form coloured ions because
    35. They absorb some energy for d-s transition
    They absorb some energy for p-d transition
    They absorb some energy for d-d transition
    They do not absorb any energy

  35. Excess of sodium hydroxide reacts with zinc to form
    36. ZnH2
    Na2ZnO2
    ZnO
    Zn(OH)2

  36. For a transistion metal ion, the effective magnetic moment in BM is given by the formula
    37. √n(n − 1)
    √n(n + 1)
    √n(n + 2)
    √n(n + 1)(n + 2)

  37. In the extraction of Cu, the reaction which does not take place in the Bessemer converter is
    38. 2CuFeS2 + O2 → Cu2S + FeS + SO2
    2Cu2S + 3O2 → 2Cu2O + 2SO2
    2Cu2O + Cu2S → 6Cu + SO2
    2FeS + 3O2 → 2FeO + 2SO2

  38. Paramagnetism is common in
    39. p-block elements
    d-block elements
    s-block elements
    f-block elements

  39. Select the correct statement
    40. All cuprous salts are blue in colour
    Transition metals are highly reactive
    All cuprous salts are white in colour
    Mercury is a liquid metal

  40. Sodiumthiosulphate is used in photography because of its
    41. Oxidizing behavior
    Reducing behavior
    Complexing behaviour
    Photochemical behavior

  41. The colour of [Ti(H2O)6]3+ ion is due
    42. d-d transistion
    Presence of water molecules
    Inter atomic transfer of electrons
    None of the above

  42. The correct statement in respect of d-block elements is
    43. They are all metals
    They show variable valency
    They form coloured ions and complex salts
    All above statement are correct

  43. Which of the following compounds is not coloured?
    44. Na2CuCl4
    Na2CdI4
    K4[Fe(CN)6]
    K3[Fe(CN)6]

  44. Purity of blister copper is
    45. 100%
    98%
    90%
    12%

  45. The alloy used in the manufacture of resistance wires is
    46. Ferro - chrome
    Bronze
    Nichrome
    Stellite

  46. In metal Carbonyls the oxidation state of the metal is
    47. 0
    + 2
    + 4
    + 6

  47. 47. Pick out the colourless ion of transition metal from the following
    48. Zn2+
    Cu2+
    Fe3+
    Mn+

  48. In the oxidation of oxalic acid by potassium permanganate, in the presence of dil. H2SO4 one of the products _________ acts as a auto-catalyst
    49. K2SO4
    MnSO4
    MnO2
    Mn2O3

  49. The incomplete transition series is
    50. 3d series
    4d series
    6d series
    5d series

  50. Which silver slit is used in Hair dye?
    51. AgCl
    AgBr
    AgNO3
    AgI

  51. Nichrome is an alloy of
    52. Cr, C, Fe, N
    Cr, Co, Ni, C
    Fe, Cr
    Cr, Ni, Fe

  52. The transition element used for making calorimeters is
    53. Cr
    Ni
    Zn
    Cu
Thank you for participating in the Quiz & Click "Grade Me" to see your Result.

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5 comments:

  1. Anonymous6 March 2015 at 16:12

    Sir,
    Qn no.17 the ion with maximum number of unpaired electrons is ---------------------
    ans: Mn2+ ( five number of unpaired electrons )
    Please check sir..

    ReplyDelete
    Replies
    1. Ravi N6 March 2015 at 23:48

      Thank you sir. Updated.

      Delete
    2. Anonymous7 March 2015 at 15:28

      Thanks for your immediate response ,sir

      Delete
    3. Anonymous26 December 2016 at 13:43

      Sir,
      Doubt in Q.nO.4 Ferrochrome is an alloy of.......
      Is it not Fe and Cr only

      Delete
  2. aswin7 March 2015 at 15:44

    THANKS SIR

    ReplyDelete

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