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Name the gas evolved when concentrated H...

Name the gas evolved when concentrated HCI is added to powdered potassium dichromate. On passing the evolved gas through acidified KBr solution, the solution turns brown. Write the balanced equations for the reactions involved.

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PRADEEP-D- AND F-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS )
  1. When H(2)O(2) is added to a acidified solution of K(2)Cr(2)O(7):

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  2. Give equation forchromyl chloride test.

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  3. Name the gas evolved when concentrated HCI is added to powdered potass...

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  4. Write an equation in ionic form to represent the oxidizing actionof Cr...

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

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  6. Give the preparation of potassium permanganate from pyrolusite ore.

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  7. What happens when (i) KMnO(4) is heated (ii) K(2)Cr(2)O(7)is heated.

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  8. What happens when acidified KMnO(4)reacts with (i) H(2)S (ii)Oxalic ac...

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  9. Describe the oxidising property of KMnO(4) in neutral or faintly alkal...

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  10. What chemical changes take place when (i) MnO(2) is fused with KOH in ...

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  11. Write ionic equations for the conversion of (a)manganate to permanga...

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  12. Write chemical equations for the following reactions: (a) Oxidatio...

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  13. Complete the following chemical equations : (i) 8MnO(4)^(-)+3S(2)O(3...

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  14. What is meant by disproporitonation of an oxidation state? Give an exa...

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  15. What happens when (i) (NH(4))(2) Cr(2) O(7) is heated ? (ii) H(3)PO...

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  16. Complete the following equations : (i) 2MnO(4)^(-) + 16 H^(+) + 5S^...

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  17. What are inner-transition elements? Decide which of the following atom...

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  18. What is lanthanoid contraction? What is its cause and what ar its cons...

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  19. Misch metal is

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  20. How would you account for the following : (i) Many of the transition...

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