What is the role of activated charcoal in gas masks used in coal mines?
- AIt acts as a catalyst for the oxidation of poisonous gases.
- BIt acts as an adsorbent for poisonous gases.
- CIt acts as a filter to remove dust particles only.
- DIt reacts with poisonous gases to form harmless compounds.
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Similar Questions
For a linear plot of $\log(x/m)$ versus $\log p$ in a Freundlich adsorption isotherm,which of the following statements is correct? ($k$ and $n$ are constants)
Which of the following is not a characteristic of chemisorption?
The number of incorrect statement/s from the following is/are:
$A.$ Water vapours are adsorbed by anhydrous calcium chloride.
$B.$ There is a decrease in surface energy during adsorption.
$C.$ As the adsorption proceeds,$\Delta H$ becomes more and more negative.
$D.$ Adsorption is accompanied by decrease in entropy of the system.
$A.$ Water vapours are adsorbed by anhydrous calcium chloride.
$B.$ There is a decrease in surface energy during adsorption.
$C.$ As the adsorption proceeds,$\Delta H$ becomes more and more negative.
$D.$ Adsorption is accompanied by decrease in entropy of the system.
DifficultJEE MAIN 2023
View SolutionWhy is $Fe(OH)_3$ colloid positively charged when prepared by adding $FeCl_3$ to hot water?
Medium
View SolutionOn which factors does the amount of adsorption depend?
Easy
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