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Why is KMnO4 kept in dark bottles ?...

Why is `KMnO_4` kept in dark bottles ?

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`MnO_(4)^(-)` solutions are intrinsically unstable in acidic solution and decompose slowly. This decomposition is catalysed by sun light. This is the statement-2 for which `KMnO_(4)` solution is kept in dark bottles.
`4MnO_(4)^(-)+4H^(+)overset(hv)to4MnO_(2)+3O_(2)+2H_(2)O`
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RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. Describe The general characteristics of transition elements with speci...

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  2. Which type of reaction MnO(4)^(2-)show with acid , dilute -alkali or w...

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  3. Why is KMnO4 kept in dark bottles ?

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  4. Why does AgNO(3) produced a black stain on the skin?

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  5. Why is AgBr used in photography ?

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  6. Why it is not advisable to dissolve KMnO(4) in cold and concentrated H...

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  7. What happen when: (a) Green Vitriol is strongly heated. , (b) FeSO(4)...

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  8. State true or false: Reaction of K(2)Cr(2)O(7) with cold and concentra...

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  9. Write balanced chemical equations for: (i) Mixture of K(2)Cr(2)O(7) ...

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  10. What are inner transition elements? Decide which of the following atom...

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  11. Actinoid contraction is greater from element to element than lanthanoi...

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  12. The chemistry of the actinoid elements is not so smooth as that of the...

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  13. Why Sm^(2+) , Eu^(2+) and Yb^(2+) ions are good reducing agents , but ...

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  14. The transition elements have a general electronic configuration.

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  15. The atomic volume of the transition elements are low compared with ele...

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  16. The wrong statement regarding transition metals among the following is...

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  17. First IE of 5d seties element are higher than those of 3d and 4d serie...

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  18. Ionisation energies of Ni and Pt in Kjmol^(-1) are given below {:(,u...

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  19. Maximum oxidation state is shown by:

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  20. Which of the following statement is false?

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