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K(2)CrO(4) is converted to K(2)Cr(2)O(7)...

`K_(2)CrO_(4)` is converted to `K_(2)Cr_(2)O_(7)` by

A

conc. `H_(2)SO_(4)`

B

KOH

C

`K_(2)CO_(3)`

D

`KNO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
In acid medium it gets converted to dichromate.
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NARAYNA-CHEMISTRY OF HEAVY METALS-SINGle Answer Questions(LEVEL-II)
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  2. The compound used in the quanlitative and quantitative analysis of car...

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  3. K(2)CrO(4) is converted to K(2)Cr(2)O(7) by

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  4. The compound formed during goldent yellow spangle test is

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  5. Which of the following is not formed when FeC(2)O(4) heated in the abs...

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  7. Which of the following does not give a precipitate with alcoholic AgNO...

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  8. To the CuSO(4) solution, NaHSO(3) and HCl were added followed by ammon...

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  9. When Pb(3)O(4) is treated with conc. HNO(3), the insoluble product obt...

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  10. The correct order of stability is

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  11. The precipitate obtained by adding lead nitrate solution to a sodium c...

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  12. Which one of the following anions will give a white precipitate with P...

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  13. Purple of Cassius is obtained by the addition of SnCl(2) solution to a...

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  14. Cr(2)O(7)^(2-)underset(Y)overset(X)hArr2CrO(4)^(2-), X and Y are respe...

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  15. Acidified chromic acid +H(2)O(2)rarr underset(("blue colour"))(X+Y), X...

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  16. (NH(4))(2)Cr(2)O(7) (ammonium dichromate) is used in fire works. The g...

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  17. When KMnO(4) solution is added to hot oxalic acid solution the decolo...

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  18. Complete the following reaction

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  19. Which of the following metal liberates H(2) from dil. HNO(3)

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  20. K(2)MnO(4)+Cl(2)rarrX+KCl Xoverset(200^(@)C)(rarr)A+B+O(2)uarr where...

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