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When H(2)O(2) is added to an acidified s...

When `H_(2)O_(2)` is added to an acidified solution of `K_(2)Cr_(2)O_(7)`

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The correct Answer is:
C
`Cr_(2)O_(7)^(2-)+2H^(+)+4H_(2)O_(2) to 2CrO(O_(2))_(2)("blue coloured")+5H_(2)O`.
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RESONANCE ENGLISH-D BLOCK ELEMENTS-EXERCISE-2 PART-II
  1. Sodium thiosulphate is used in photography because of its:

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  2. MnO4^(2-) (1mol) in neutral aqueous medium disproportionate to

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  3. When H(2)O(2) is added to an acidified solution of K(2)Cr(2)O(7)

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  4. The number of moles of KMnO(4) that will be needed to react with one ...

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  5. Ammonium dichromate is used in some fireworks. The green-coloured powd...

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  6. The number of moles of KMnO4 that are needed to react completely with ...

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  7. Super conductors are derived from compound of:

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  8. In photography , quinol is used as developer accoding to following rea...

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  9. Which of the following statement(s) is/are correct?

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  10. Following reaction (s) is /are involved in the iodometric estimation

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  11. The colour of the transition metal ions is//are due to:

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  12. Which of the following statement(s) is/are not correct.

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  13. Select correct statement(s).

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  14. Correct statements about transition metals are that they:

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  15. Transition elements have greater tendency to form complexes because

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  16. Which of the following statement are correct when a mixture of Nacl a...

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  17. Which of the following reaction(s) is/are incorrect for silver nitrate...

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  18. Which of the following reaction(s) is /are used for the preparation of...

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  19. Which of the following is//are false?

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  20. Which of the following chemical reaction(s) is/are involved in develop...

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