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A sulphate of a metal (A) on heating evo...

A sulphate of a metal (A) on heating evolves two gases (B) and ( C) and an oxide (D). Gas (B) turns `K_(2)Cr_(2)O_(7)` paper green while gas ( C) forms a trimer in which there is no `S-S` bond. Compound (D) with HCl, forms a Lewis acid (E ) which exists as a dimer. Compounds (A), (B), ( C),(D) and (E) are respectively:

A

`FeSO_(4),SO_(2),SO_(3),Fe_(2)O_(3),FeCl_(3)`

B

`Al_(2)(SO_(4))_(3),SO_(2),SO_(3),Al_(2)O_(3),FeCl_(3)`

C

`FeS,SO_(2),SO_(3),Fe_(2)(PO_(4))_(3),FeCl_(3)`

D

`FeS,SO_(2),SO_(3),Fe_(2)(PO_(4))_(3),FeCl_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A

`underset((A))(2FeSO_(4))rarrunderset((D))(Fe_(2)O_(3))+underset((B))(SO_(2))+underset((C ))(SO_(3))`
`Fe_(2)O_(3)+6HClrarr2FeCl_(3)+3H_(2)O`
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NARAYNA-QUALITATIVE ANALYSIS-Level -II (H.W.)
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  2. In the separation of Cu^(2+) and Cd^(2+) of Iind group in qualitative ...

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  3. Which of the following sulphate is insoluble in water ?

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  4. Passing H(2)S gas into a mixture of Mn^(2+), Ni^(2+), Cu^(2+) and Hg^(...

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  5. An aqueous solution of a substance gives a white precipitate on treat...

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  6. When H(2)S gas is passed through an ammonical salt solution X, a sligh...

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  7. MgSO(4) on reaction with NH(4)OH and Na(2)HPO(4) forms a white crystal...

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  8. When dimethyl glyoxime solution is added to an aqueous solution of nic...

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  9. Aqueous solution of A gives yellow precipitate with aqueous solution o...

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  10. The sulphides of which one of the following groups of elements are sol...

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  11. NiS is separated from ZnS by treating with

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  12. Mercurous chloride black on adding NH(4)OH to it. Explain.

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  13. Which of the following sulphides is yellow in colour?

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  14. An orange precipitate in the second group is given by

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  15. An aqueous solution containing Hg^(2+),Hg(2)^(2+),Pb^(2+) and Cd^(2+) ...

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  16. Upon treatment with ammonical H(2)s, the metal ion that precipitates a...

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  17. Calomel (Hg(2)Cl(2)) on reaction with ammonium hydroxide gives

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  18. A sulphate of a metal (A) on heating evolves two gases (B) and ( C) an...

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  19. Which of the following pairs is not distinguished by passing H(2)S ?

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  20. A red solid is insoluble in water. However, it becomes soluble if some...

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