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Name the gas that can readily decolouris...

Name the gas that can readily decolourise acidified `KMnO_(4)` solution:

A

`CO_(2)`

B

`SO_(2)`

C

`NO_(2)`

D

`P_(2)O_(5)`

Text Solution

Verified by Experts

The correct Answer is:
B
`SO_(2)` readily decolourises acidified `KMnO_(4)` solution.
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An aqueous solution of gas ‘A’ gave the following data (reactions): It decolourised an acidified KMnO_(4) solution.

An aqueous compound of an inorganic compound (X) shows the following reactions: a. it decolourises and acidified KMnO_(4) solution accompanied by the evolution of oxygen. b. it liberates I_(2) from an acidified KI solution. c. It gives a brown precipitate with alkaline KMnO_(4) solution with evolution of oxygen. d. It removes black stains from old oil paintings. Identify (X) and give chemical equtions for the reaction at steps (a) to (d).

Why can’t HCl acid be used to acidify KMnO_(4) solution ?

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  3. Name the gas that can readily decolourise acidified KMnO(4) solution:

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  4. Gadolinium belongsd to 4f series. It's atomic number is 64. which of t...

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  5. The electronic configuration of Eu (Atomic No. 63), Gd (Atomic No. 64)...

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  6. Cerium (Z= 58) is an important nember of the lanthanoids . Which of th...

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  7. The atomic number of cerium (Ce) is 58. The correct electronic con...

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  8. The electronic configuration of Gd^(2+)is :

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  9. Which of the following exhibits only +3 oxidation state?

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  10. Lanthanide contraction is observed in:

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  11. Because of lanthnoid contraction, which of the following pairs of elem...

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  12. The correct order of ionic radii Y^(3+) , La^(3+) , Eu^(3+) and Lu^(3+...

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  13. The correct order of ionic radii of Ce, La, Pm and Yb in +3 oxidation ...

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  14. Identify the incorrect statement among the following:

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  15. Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 ...

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  16. Among the following lanthanoid ions, the paramagnetic ion is

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