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What is the role of activated charcoal i...

What is the role of activated charcoal in gas mask used in coal mines?

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The role of the activation charcoal in gas mask used coal mine is

(i) What is the role of activated charcoal in gas mask ? (ii) A colloidal sol is prepared by the given method in figure. What is the charge on hydrated ferric oxide colloidal particles formed in the test tube ? How is the sol represented? (iii) How does chemisorption vary with temperature?

Activated charcoal is prepared by :

MODERN PUBLICATION-SURFACE CHEMISTRY-REVISION EXERCISE (SHORT ANSWER QUESTION)
  1. State Hardy schulze rule.

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  2. Why are lyophilic colloids used as protective colloids?

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  3. What is the role of activated charcoal in gas mask used in coal mines?

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  4. From the following figure, the correct observation is :-

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  5. (i) What is the role of activated charcoal in gas mask ? (ii) A coll...

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  6. Classify colloids where dispersion medium is water. State their charac...

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  7. Whate happens in the following activities and why? (i) An electrol...

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  8. Explain what is observed (i) when a beam of light is passed through ...

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  9. Explain what is observed (a) When an electrolyte NaCl is added to fe...

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  10. Write three distinct features of chemisorptions which are not found in...

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  11. What are the characteristics of the following colloids ? Give one exam...

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  12. What are the characteristics of the following colloids ? Give one exam...

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  13. What are the characteristics of the following colloids ? Give one exam...

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  14. What are Associated Colloids ? Given an example.

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  15. Define the following terms giving an example of each: (i) Associated...

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  16. Define the following terms giving an example of each: (i) Associated...

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  17. Give reason for the Physisorption decreases with increase in temperatu...

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  18. Alum purifies muddy water by

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  19. Brownian movement is found in

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  20. O/W type emulsion means

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