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Complete the following chemical equation...

Complete the following chemical equation : `MnO_2+ KOH + O_2 rarr `

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. What are the main consequences of lanthanoid contraction ?

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  2. Complete the following chemical equation : KMnO4 overset (513K) rarr

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  3. Complete the following chemical equation : MnO2+ KOH + O2 rarr

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  4. Does actinoids show actinoid contraction similar to lanthanoid contrac...

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  5. Transition metals form mostly coloured compounds.Explain.

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  6. Complete the following chemical equation : MnO4^(-)(aq) + H2O2(aq)+ H^...

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  7. Give the preparation of Potassium Permanganate from Pyrolusite ore.

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  8. Explain how the colour of a solution of K2Cr2O7 depends on the pH of t...

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  9. Explain, giving reasons, which one of the following pairs exhibits the...

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  10. Explain, giving reasons, which one of the following pairs exhibits the...

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  11. Write chemical reaction for preparation of K2Cr207 from chromite ore.

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  12. Why is Copper considered as transition metal ?

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  13. Calculate the number of unpaired electrons in the following gaseous io...

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  14. State what happens when a solid mixture of KCl and K2Cr2O7 is heated w...

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  15. To what extent do the electronic configurations decide the stability o...

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  16. Why are Mn^(2+) compounds more stable than Fe^(2+) compounds towards o...

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  17. Write the name of metal which shows only +3 oxidation state.

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  18. What is lanthanoid contraction ?

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  19. Give the general electronic configuration of d-block elements.

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  20. Out of Fe^(2+) and Fe^(3+) which is more paramagnetic and why ?

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