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Name the gas that can readily decolouris...

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

A

`SO_2`

B

`NO_2`

C

`P_2O_5`

D

`CO_2`

Text Solution

Verified by Experts

The correct Answer is:
A
`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 ?

MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-COMPETITION FILE (MULTIPLE CHOICE QUESTION ((B) MULTIPLE CHOICE QUESTION FROM COMPETITIVE EXAMINATION))
  1. The electronic configuration of Eu (Atomic No. 63), Gd (Atomic No. 64)...

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  2. Which one of the following statements related to lanthanons is incorre...

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

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  4. The reason for greater range of oxidation state in actinoids is attrib...

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  5. Which one of the following ions exhibits d-d transition and paramagnet...

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  6. Match the metal ions given in Column I with the spin magnetic moments ...

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  7. The magnitude and permanganate ions are tetrahedral due to

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  8. Amount of oxalic acid present in a solution can be determined by its t...

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  9. Mark the correct statements(s) (1) Manganeses exhibits +7 oxidation ...

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  10. The maximum oxidation state exhibited by actinide ions is

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  11. KMnO4 gets reduced to

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  12. The bonds present in the structure of dichromate ion are

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  13. In context of the lanthanoids, which of the following statements is no...

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  14. Iron exhibits +2 and +3 oxidation states. Which of the following state...

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  15. When H(2)O(2) is shaken with an acidified solution of K(2)Cr(2)O(7) in...

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  16. Four successive members of the first series of transition metals are l...

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  17. Which of the following arrangements does not represent the correct ord...

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  18. Which series of reactions correctly represents chemical rections relat...

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  19. The colour of KMnO(4) is due to

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  20. Which one of the following ions has same numbr of unpaired electrons a...

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