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12th Standard English Medium Chemistry Subject Transition and Inner Transition Elements Book Back 1 Mark Questions with Solution Part - II

12th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 5

    Part I

    5 x 1 = 5
  1. The number of moles of acidified KMnO4 required to oxidize 1 mole of ferrous oxalate(FeC2O4) is _______.

    (a)

    5

    (b)

    3

    (c)

    0.6

    (d)

    1.5

  2. When a brown compound of Mn (A) is treated with HCl, it gives a gas (B). The gas (B) taken in excess reacts with NH3 to give an explosive compound (C). The compound A, B and C are ________.

    (a)

    MnO2, Cl2, NCl3

    (b)

    MnO, Cl2, NH4Cl

    (c)

    Mn3O4, Cl2, NCl3

    (d)

    MnO3, Cl2, NCl2

  3. Which one of the following statements related to lanthanons is incorrect?

    (a)

    Europium shows +2 oxidation state

    (b)

    The basicity decreases as the ionic radius decreases from Pr to Lu.

    (c)

    All the lanthanons are much more reactive than aluminium

    (d)

    Ce4+ solutions are widely used as oxidising agents in volumetric analysis.

  4. Which of the following lanthanoid ions is diamagnetic?

    (a)

    Eu2+

    (b)

    Yb2+

    (c)

    Ce2+

    (d)

    Sm2+

  5. Which of the following oxidation states is most common among the lanthanoids?

    (a)

    +4

    (b)

    +2

    (c)

    +5

    (d)

    +3

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