Transition and Inner Transition Elements Book Back Questions

12th Standard EM

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
    5 x 1 = 5
  1. Which of the following d block element has half filled penultimate d sub shell as well as half filled valence sub shell?

    (a)

    Cr

    (b)

    Pd

    (c)

    Pt

    (d)

    none of these

  2. the catalytic behaviour of transition metals and their compounds is ascribed mainly due to

    (a)

    their magnetic behaviour

    (b)

    their unfilled d orbitals

    (c)

    their ability to adopt variable oxidation states

    (d)

    their chemical reactivity

  3. The correct order of increasing oxidizing power in the series

    (a)

    VO2+ < Cr2O72- < MnO4-

    (b)

    Cr2O72- < VO2+ < MnO4-

    (c)

    Cr2O72- < MnO4- < VO2+

    (d)

    MnO4- < Cr2O72- < VO2+

  4. Which of the following statements is not true?

    (a)

    on passing H2S, through acidified K2Cr2O7 solution, a milky colour is observed

    (b)

    Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis

    (c)

    K2Cr2O7 solution in acidic medium is orange in colour

    (d)

    K2Cr2O7 solution becomes yellow on increasing the PH beyond 7

  5. Permanganate ion changes to ________ in acidic medium

    (a)

    MnO42−

    (b)

    Mn2+

    (c)

    Mn3+

    (d)

    MnO2

  6. 3 x 2 = 6
  7. What are transition metals? Give four examples.

  8. What are actinides? Give three example

  9. What is lanthanide contraction and what are the effects of lanthanide contraction?

  10. 3 x 3 = 9
  11. Write the electronic configuration of Ce4+ and Co2+.

  12. Explain the variation in E0M3+/M2+  3d series.

  13. Explain why Cr2+ is strongly reducing while Mn3+ is strongly oxidizing.

  14. 2 x 5 = 10
  15. The E0M2+/M value for copper is positive. Suggest a possible reason for this.

  16. Which metal in the 3d series exhibits +1 oxidation state most frequently and why

*****************************************

TN 12th Standard EM Chemistry free Online practice tests

Reviews & Comments about 12th Standard Chemistry - Transition and Inner Transition Elements Book Back Questions

Write your Comment