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When a chromite ore (A) is fused with so...

When a chromite ore (A) is fused with sodium carbonate in free excess of air and the product is dissolved in water, a yellow solution of compound (B) is obtained. After treatment of this yellow solution with sulphuric acid, compound (C ) can be crystallised from the solution. When compound (C ) is treated with KCl, orange crystals of compound (D) crystallise out. Identify A to D and also explain the reactions.

A

No gaseous product is formed

B

Iron (II) oxide is obtained

C

A water insoluble product which is dark brown in colour is formed

D

A water soluble product which is red in colour is obtained

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-M0ck test 26-EXAMPLE
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  3. Transition metals and their compounds show catalytic properties becaus...

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  4. The common transition metals in brass and bronze is

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  5. Which group elements of first transition series has the highest parama...

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  6. The product formed by the fusion of MnO2 with KHO in the presence of a...

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  7. The number of equivalent Cr-O bonds in CrO4^(2-) is

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  8. Why actinoid contraction is more than lanthanoid contraction

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  9. CrO3 dissolves in aqueous NaOh to give

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  10. Which of the following can be oxidised by acidified K2Cr2O7 ?

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  11. The most common oxidation state exhibited by lanthanoids and actinoids...

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  12. The paramagnetic lanthanoid ion among the following is

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  13. The nature of CrO and Cr2O3 is respectively

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  14. Identify the incorrect statement with respect to KMnO4

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  15. Consider the following statements (I) Zr^(4+) and Hf^(4+) have almos...

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  16. The reddish brown gas produced by heating KCl with solid K2Cr2O7 and...

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  17. Chromate ion, CrO4^(2-) is

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  18. When KMnO4 reacts with I^- in a slightly alkaline and acidic medium, t...

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  19. Which of the following characteristic is not the point of similarity b...

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  20. When a chromite ore (A) is fused with sodium carbonate in free excess ...

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