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(A): In alkaline medium, KMnO(4) oxidize...

(A): In alkaline medium, `KMnO_(4)` oxidizes iodides to iodates.
(R): `KMnO_(4)` behaves as stronger oxidizing agent in alkaline medium than in acidic medium. 

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

Verified by Experts

The correct Answer is:
C

(A) is true but (R) is false
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AAKASH SERIES-D-BLOCK ELEMENTS-OBJECTIVE EXERCISE-4 (ASSERTION (A) & REASON (R) TYPE QUESTIONS )
  1. (A): Equivalent mass of K(2)Cr(2)O(7), when it acts as oxidizing agent...

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  2. (A): Ti(IV) in aqueous solutions is colour less. (R): Ti(IV) has no ...

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  3. (A): In alkaline medium, KMnO(4) oxidizes iodides to iodates. (R): K...

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  4. (A): Zr and Hf have nearly equal atomic radii. (R): Zr and Hf belong...

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  5. (A) Scandium is the lightest transition metal, (R) Atomic radius of ...

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  6. (A) The most common oxidation state of lanthanides is + 3. (R) Lanth...

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  7. (A): Ce^(4+) is a good oxidizing agent. (R): Sm^(2+) is a good reduc...

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  8. (A): Zinc does not show characteristic properties of transition metals...

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  9. (A): K(2)CrO(4) has yellow colour due to charge transfer (R) : CrO(4...

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  10. (A) The highest oxidation state of chromium in its compounds is + 6 ...

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  11. (A) CrO3, reacts with HCl to form chromyl chloride gas (R) Chromyl c...

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  12. (A) Tungsten has a very low melting point (R) Tungsten is a covalent...

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  13. (A) Cu^+ ion is coloured in aqueous solutions (R) Four water molecul...

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  14. (A) Equivalent mass of KMnO4 is equal to one-third of its molecular ma...

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  15. (A) Ce^(4+) is used as an oxidising agent in volumetric analysis. (R...

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  16. (A) In MnO(4)^(-) the M-O bonds are ionic . (R) The oxidation number ...

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  17. (A) Mn atom loses ns electrons first during ionization as compared to ...

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  18. (A) Aqueous solution of FeCl3 is acidic due to cationic hydrolysis ...

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  19. (A) Mercury is liquid at room temperature (R) In mercury, there is ...

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  20. (A) The purple colour of KMnO4 is due to the charge transfer transitio...

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