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The yellow colour of chromates changes t...

The yellow colour of chromates changes to orange on acidification due to formation of:

A

`Cr^(3+)`

B

`Cr_(2)(CO_(3))_3`

C

`Cr_(2)O_(7)^(2-) `

D

`CrO_(4)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
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RESONANCE-D BLOCK ELEMENTS-EXERCISE-I PART-II
  1. Which one of the ionic species will impart colour to an aqueous soluti...

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  2. MnO(4)^(-) is of intense pink colour, though Mn is in(+7) oxidation st...

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  3. The yellow colour of chromates changes to orange on acidification due ...

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  4. CuSO(4).5H(2)O is blue in colour because

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  5. whih of the following ions gives(s) coloured aqeous solution?

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  6. The catalytic activity of the transition metals and their compound is ...

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  7. Cementite is:

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  8. which forms interstitial compounds?

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

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  10. KmnO(4) is the oxo salt of :

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  11. When K(4)[Fe(CN)(6)] is added to FeCl(3) , the complex compound formed...

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  12. FeCl(3).6H(2)O is actually:

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  13. A compound is yellow when hot and white when cold. The compound is:

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  14. On heating ZnXl(2).2H(2)O, the compounds obtained is:

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  15. When copper is placed in the atmosphere for sufficient time, a green c...

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  16. The solubility of silver bromide in hypo solution (excess) is due to ...

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  17. In dilute alkaline solution,MnO(4)^(-) changes to:

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  18. Cl2 gas is obtained by various reactions select the reactions from the...

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  19. CuSO(4) solution + lime is called:

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  20. The developer used in photography is an alkaline solution of:

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