Question

Gas mask contains
(A) Charcoal granules
(B) Calcium carbonate
(C) Fullers earth
(D) Powdered charcoal

Answer 1

Hint Gas mask uses the adsorption technique. It is the process of retaining the molecules on the surface of the liquid. It is the reverse process of absorption

Complete step by step answer:
The classes of chemistry which tell about the basic concept of the polymers and their uses and also some of the chemicals we use in our daily life that are beneficial and so on are familiar to us.
Let us now see in detail about what does gas mask mean and what is made of and what does it contain so that we will be able to deduce the required answer.
- The gas mask is a device designed to protect the wearer against the harmful substances in the air
- It consists of a tight-fitting facepiece that contains a filter and transparent eyepieces
- Finely divided charcoal has a tendency to adsorb a number of gases like ammonia, chlorine
- In this charcoal acts as an adsorbent while gas molecules act as the adsorbate.
-Activated powdered charcoal is used in the gas mask is exposed to the atmospheric air so that gases and water vapours in the air are adsorbed on its surface.
- Therefore gas masks contain powdered charcoal.

Hence the correct answer is option D

Note: Note that the gas mask uses the phenomenon of adsorption which means that it is the phenomenon of retaining of the molecules on its surface and attracting it and do not confuse this with absorbate because absorption is the phenomenon of completely dissolve or take inside and not just the attraction.