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Assertion: A pink coloured solution of p...

Assertion: A pink coloured solution of potassium permanganate turns green on passing `O3` through it
Reason `K_(2)MnO_(4)` is oxidised by `O_(3)` to `KMnO_(4)`.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-17

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-18

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

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The correct Answer is:
D
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Assertion (A) : Pink coloured solution of potassium permanganate turns green on passing O_3 through it. Reason (R) : K_2MnO_4 is oxidised by O_3 to KMnO_4 .

K_(2)MnO_(4) can be converted to KMnO_(4) by

Assertion : In acid solution, permanganate is reduced to Mn^(2+) by an excess of reducing agent. Reason : MnO_(4)^(-) reduced in Mn^(2+) in acidic medium and the product in the presence of an excess of permanganate is MnO_(2) .

Write balanced redox reactions for each of the following reactions: (a) Potassium dichromate (K_(2)Cr_(2)O_(7)) reacts with hydroiodic acid (HI) to produce potassium iodide, chromium (III) iodide, and solid iodine, I_(2)(s) . (b) A purple solution of aqueous potassium permanganate (KMnO_(4)) reacts with aqueous sodium sulphite (Na_(2)SO_(3)) in basic solution to yield the green magnanate ion (MnO_(4)^(2-)) and sulphate ion (SO_(4)^(2-)) . (c ) Sn^(2+) (aq) reduce I_(4)^(Ө)(aq) to I^(Ө)(aq) and is oxidised to Sn^(4+) . (d) H_(2)O_(2)(aq) oxidises Mn^(2+)(aq) to MnO_(2) in basic medium. (e) H_(2)O_(2)(aq) reduces Cr_(2)O_(7)^(2-) (aq) to green coloured Cr^(3+)(aq) in acidic medium.

RESONANCE-P BLOCK ELEMENTS-Exercise 1 part 3 ASSERTION/REASONING
  1. Statement-1 : Ammonium nitrate on heating gives N(2)O. Statement-2 :...

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  2. Statement-1 : H(3)PO(3) is a dibasic acid and shows reducing character...

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  3. Statement-1 : Liquid NH(3) is used for refrigeration. Statement-2 : ...

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  4. Statement-1 : Nitrates are not wide spread in the earth's crust. Sta...

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  5. Statement-1 : Among nitrogen halides NX(3), the dipole moment is highe...

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  6. Statement-1 : Bismith does not form a pentoxides. Statement-2 : The ...

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  7. Statement-1 : NaH(2)PO(2) is an acid salt. Statement-2 : It contains...

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  8. Statement-1 : Both H(3)PO(3) and H(3)PO(4) have the same number of hyd...

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  9. Statement I HNO(3) is a stronger acid than HNO(2). Statement II In H...

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  10. Statement-1 : Electrovalency of oxygen is two (O^(2-)) Statement-2 :...

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  11. Statement-1 : At room temperature oxygen exists as a diatomic gas, whe...

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  12. Statement-1 : Anhydrous BaO(2) is not used for preparing H(2)O(2). S...

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  13. Statement-1 : Mobility of mercury (Hg) decreases and its starts sticki...

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  14. Statement-1 : Sulphuric acid is less viscous than water due to intermo...

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  15. Statement-1 : In caro's acid the oxidation state of sulphur is +5 St...

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  16. Statement-1 : Ozone is a stronger oxidising agent in acidic medium. ...

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  17. Assertion: A pink coloured solution of potassium permanganate turns gr...

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  18. Statement-1 : H(2)O(2) is stored in wax-lined glass. Statement-2 : P...

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  19. Statement-1 : Sulphur exhibits paramagnetic behaviour in vapour state....

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