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Describe the reaction of acidified K2Cr2...

Describe the reaction of acidified `K_2Cr_2O_7` with `Na_2SO_3` solution.

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It oxidises sulphites to sulphates.
`K_2Cr_2O_7 + 4H_2SO_4 + 3Na_2SO_3 to K_2SO_4 + Cr_2(SO_4)_3 + 4H_2O + 3Na_2SO_4`.
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OMEGA PUBLICATION-THE D- AND F-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS
  1. Describe the reaction of acidified K2Cr2O7 with Na2SO3 solution.

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  2. Which element belongs to d-block elements ?

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  3. The transition elements have a general electronic configuration of

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  4. The correct ground state electronic configuration of chromium atom (Z...

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  5. Which of the following electronic configuration is that of a transiti...

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  6. Which of the following elements is alloyed with copper to form brass?

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  7. Copper can be extracted from

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  8. Argentite is an ore of

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  9. The process used for the extraction of gold is

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  10. Important ore of zinc is

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

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  12. Transition elements

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  13. The tendency of the transition elements to form coloured compounds is...

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  14. Which of the following is diamagnetic ?

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  15. The common oxidation state of the elements of lanthanide series is

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  16. Which of the following is a lanthanide ?

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  17. For the process Cu(g) to Cu^+ (g) + e^- , the electron is to be...

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  18. Paramagnetism is a property of

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  19. The first ionisation energy of silicon is lower than that of

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  20. Which of the following electronic configurations will have the lowest...

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  21. In general, the melting and boiling point of transition metals

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