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The incorrect statement among the follow...

The incorrect statement among the following

A

A catalyst does not initiate the reaction

B

The action of catalyst in many instances is selective

C

Catalyst may loose its catalytic activity at high temperature

D

The composition of catalyst changes at the end of reaction

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-SURFACE CHEMISTRY-PRACTICE EXERCISE
  1. Which process does not involve a catalyst?

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

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  3. The incorrect statement among the following

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  4. The Brownian motion is due to:

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

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

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

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  8. Smoke is an example of

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

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

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

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  12. Which one of the followings is correctly matched ?

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

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

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

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  16. The diffusion of particles in colloid is

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  17. Butter is a colloid. It is formed when

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  18. When a colloidal solution is observed under an ultra microscope, we ca...

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  19. Which one of the following constitues irreversible colloidal system wi...

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  20. Which of the following forms cationic micelles above certain concentra...

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