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Which of the following compounds is used...

Which of the following compounds is used at the staring material for the preparation of `K_(2)Cr_(2)O_(7)?`

A

Chrome alum

B

Chromo yellow

C

Chromit ore

D

Chrome red

Text Solution

Verified by Experts

The correct Answer is:
C
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Which of the following compounds is formed when a mixture of K_(2)Cr_(2) O_(7) and KCl is heated with conc. H_(2)SO_(4) ?

Which one of the following compounds would not be easily oxidised by K_(2)Cr_(2)O_(7) and sulphuric acid ?

Which of the following is incorrect regarding K_(2)Cr_(2)O_(7) ?

Which one of the following compounds would not be easily oxidised by K_(2) Cr_(2) O_(7) "in dil" H_(2) SO_(4) ?

In which of the following is there an element with the same oxidation state as that of chromium in K_(2)Cr_(2)O_(7) ?

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  4. In Cr(2) O (7)^(2-) , Cr -O-Cr bond anlge is

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  5. Solid KmnO(4) on heating with H(2) forms

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  6. KMnO(4) is

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  8. In Cr(2) O(7)^(2-) every Cr atom is linked to

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

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  12. Chromyl chloride tsts is used to detect

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  13. The shape of CrO(4)^(2-) is ….and Cr atom involves.l..hydrization.

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  14. Pick out the incorrect statement about K(2)Cr(2)O(7)

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  15. Pick out incorrect statemment about K(2) Cr(2)O(7).

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  16. The addition of acidic K(2)Cr(2) O(7) to NaCl produces a colour

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  17. Which of the following compounds is formed when a mixture of K(2)Cr(2)...

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  19. Pick out the incorrect statement.

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  20. MnO(4)^(-) ions can be reduced in strongly alkaline medium to give

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