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The role of the activation charcoal in g...

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

A

absorption of poisonous gases

B

adsorption of poisonous gases

C

neutralisation of gases

D

None of the above .

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The correct Answer is:
B
Activated charcoal is used for the adsorption of poisonous gases on its surface .
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What is the role of activated charcoal in gas mask used in coal mines?

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

(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 :

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SURFACE CHEMISTRY-EXERCISE 2
  1. Extent of adsorption is

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  2. During adsorption , which of the following has negative value ?

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

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  4. Gas mask is prepared on the basis of adsorption because

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  5. Adsorption of gaseous moleculesof hydrogen on Pd is known as

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  6. Point out the correct statement .

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  7. Plot of log x/m against log p is a straight line inclined at an angle ...

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  8. Choose the incorrect statement .

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  9. Powdered substances are more effective adsorbents than their crystalli...

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  10. The linear plot for Freundich adsorption isotherm is

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  11. In general, H(2) gas is adsorbad on activated charcoal to a less exten...

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  12. For a positively charged sol , the flocculating power of KCl , MgCl(2)...

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  13. LANGMUIR ISOTHERM

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  14. Which of the following is the correct approximate value of ratio of si...

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  15. How will you test whether a given solution is a colloidal solutio...

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  16. Which of the following is incorrect about adsorption ?

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  17. In physisorption , adsorbent does not show specificity for any particu...

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  18. Adsorption is always exothermic in nature , Do you agree ?

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  19. A colloidal solution is subjected to an electrical field. The particle...

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  20. Identify the gas which is readily adsorbed by activated charcoal .

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