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KCIO(3) on heating decomposes into KCl a...

`KCIO_(3)` on heating decomposes into KCl and `O_(2)`. If some `MnO_(2)` is added the reaction goes much faster because : 

A

`MnO_(2)` decomposes to give oxygen

B

`MnO_(2)` provides heat by reacting

C

better contact is provided by `MnO_(2)`

D

`MnO_(2)` acts as a catalyst

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-SURFACE CHEMISTRY-PRACTICE EXERCISE
  1. Which is not correct for hetergeneous catalysis?

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  2. Which explains the effect of a catalyst on the rate of a reversible re...

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  3. KCIO(3) on heating decomposes into KCl and O(2). If some MnO(2) is add...

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  4. Pick up the incorrect statement

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  5. Which type of metals form effective catalyst?

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  6. Which process does not involve a catalyst?

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  7. A chemical reaction is catalysed by a catalyst hence the catalyst

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  8. The incorrect statement among the following

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  9. The Brownian motion is due to:

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  10. Which of the following is not shown by sols?

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  11. The movement of sol particles under an appled electric field is called...

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  12. The average size of the colloids is of the order

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  13. Smoke is an example of

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  14. Gelatin is often used as an ingredient in the manufacture of ice-cream...

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  15. The separation of colloidal particles (or purification of sol) from pa...

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  16. The arsenious sulphide sol has negative charge. The maximum coagulatin...

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  17. Which one of the followings is correctly matched ?

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  18. Which one of the following methods is commonly used for destruction of...

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  19. Gold numbers of protective colloids A,B, C and D are 0.50, 0.01, 0.10,...

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  20. The property of colloidal suspension used to determine the nature of c...

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