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Choose the correctly paired gaseous cati...

Choose the correctly paired gaseous cation and its magnetic (spin only) moment (in BM)

A

`Cr^(2+), 4.90 BM`

B

`Mn^(2+), 4.90 BM`

C

`Ti^(2+), 3.87 BM`

D

`Co^(3+), 4.87 BM`

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The correct Answer is:
A
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KUMAR PRAKASHAN-THE D-AND F-BLOCK ELMENTS-Section -E (MCQs Asked in Comprtitive Exam)
  1. Which is not stable under ambient condition?

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  2. MnO(3) in an acidic medium dissociates into

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  3. Magnetic moment of Cr^(2+) is nearest to …..

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  4. Which of the following elements has lowest melting points?

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  5. Maximum number of unpaired electrons are present in….

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  6. When calomel is treated with ammonium hydroxide, a black substance is ...

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  7. Which of the following is most basic?

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  8. Which of the following does not exist?

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  9. KMnO(4) in alkaline medium changes to ….

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  10. Choose the correctly paired gaseous cation and its magnetic (spin only...

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  11. In presence of acidic medium, KMnO(4) converts H(2)S into ….

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  12. Copper sulphate is dissolved in water containing…. For making bordeaux...

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  13. Colour imparted by Co(II) compounds to glass is…..

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  14. The colourless species is……

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  15. Among the following the compound that is both paramagnetic and colourl...

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  16. KMnO(4) on reaction with KOH does not give…

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  17. Which is least stable in aqueous medium ?

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  18. In which of the following elements number of d-electrons is zero in 6d...

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  19. In acidic medium, which of the following becomes colourless ?

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  20. Which of the following exhibits minium number of oxidation states?

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