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Which of the two have almost similar siz...

Which of the two have almost similar size :

A

`"_22Ti` and `" _40Zr`

B

`"_41Nb` and `"_73Ta`

C

`"_39Y` and `"_57La`

D

`"_20Ca` and `"_31Ir`

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The correct Answer is:
B
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MBD PUBLICATION-TRANSITION METALS (d-BLOCK ELEMENTS)-QUESTION BANK
  1. Cerium can show the oxidation state of +4 because :

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  2. In aqueous solution Eu^(2+) acts as :

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  3. Which of the two have almost similar size :

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  4. The lanthanide contraction relates to :

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  5. The blue colour produced on adding H2O2 to acidified K2Cr2O7 is due to...

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  6. The electronic configuration of actinides can not be assigned wtith de...

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  7. The inner transition elements are the elements in which the added elec...

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  8. Zr and Hf almost equal atomic and ionic radii because:

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  9. Which of the following is a lanthanide ?

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  10. Which of the following transition elements is not resistant to corrisi...

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  11. Find the magnetic moment of Cr^(3+) ion.

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  12. Which forms interstitial compounds ?

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  13. Which transition metal is used for the reduction of steam to hydrogen ...

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  14. Which of the following oxides of chromium is amphoteric in nature ?

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  15. Chromium compound used in training of leather is:

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  16. Steel that is resistant to acids is :

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  17. Permanent magnets are generaly made of alloys of :

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  18. The highest magmetic moment is shown by the transition metal ion with ...

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  19. Dilute alkaline solution of KMnO4 is called :

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  20. From a solution of CuSO4 , the metal used to recover copper is :

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