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Assertion (A): Pink coloured solution of...

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`.

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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Potassium manganate (K_2MnO_4) is formed when

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A green coloured solution of a salt changes its colour to light pink on passing ozone through it. Which of the following species represent pink and green colour respectively.

In permanganate titrations, potassium pemanganats is used an an oxidizing agent in acidic medium. The medium is maintained acidic by the use of dilute sulphuric acid. Potassium permanganate acts as self indicator . The potential equation, when potassium permanganate acts as an oxidizing agent is 2KMnO_(4) + 3H_(2)SO_(4) to K_(2)SO_(4) + 2MnSO_(4) + 3H_(2)O + 5[O] or MnO_(4)^(-) + 8H^(+) + 5e^(-) to Mn^(2+) + 4H_(2)O Before the end point, the solution remains colourless but after teh equivalence point only one extra drop of KMnO_(4) solution imparts pink colour , i.e. appearance of pink colour indicates end point. These titrations are used for estimation of ferrous salts, oxalic acid, oxalates, hydrogen peroxide, As_(2)O_(3) etc. In alkaline condition, KMnO_(4) reacts as follows : 2KMnO_(4) + 2KOH to 2K_(2)MnO_(4) + H_(2)O + [O] Therefore , its equivalent mass will be

In permanganate titrations, potassium pemanganats is used an an oxidizing agent in acidic medium. The medium is maintained acidic by the use of dilute sulphuric acid. Potassium permanganate acts as self indicator . The potential equation, when potassium permanganate acts as an oxidizing agent is 2KMnO_(4) + 3H_(2)SO_(4) to K_(2)SO_(4) + 2MnSO_(4) + 3H_(2)O + 5[O] or MnO_(4)^(-) + 8H^(+) + 5e^(-) to Mn^(2+) + 4H_(2)O Before the end point, the solution remains colourless but after teh equivalence point only one extra drop of KMnO_(4) solution imparts pink colour , i.e. appearance of pink colour indicates end point. These titrations are used for estimation of ferrous salts, oxalic acid, oxalates, hydrogen peroxide, As_(2)O_(3) etc. Mass of KHC_(2)O_(4) (potassium acid oxalate ) required to reduce 100 ml of 0.02 KMnO_(4) in acidic medium (MnO_(4)^(-)" changes to " Mn^(2+)) is x gm and to neutralize 100 ml of 0.05M Ca(OH)_(2) is y gm ,then

RESONANCE ENGLISH-P BLOCK ELEMENTS-Exercise 1 part 3 ASSERTION/REASONING
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  2. How many grams of dibasic acid (mol. weight 200) should be present in ...

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

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  4. How many grams of dibasic acid (mol. weight 100) should be present in ...

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  5. How many grams of dibasic acid (mol. weight 100) should be present in ...

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  6. Calculate the number of moles in 127 grams of CaOCl2

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

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  8. Calculate the number of moles in 254 grams of CaOCl2

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  9. Calculate the number of moles in 369 grams of CaOCl2 ​

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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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  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. Draw the Structure of : Thiosulphuric acid

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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. Calculate the number of moles in 316 grams of KMnO4

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