Gas mask works on the principle of :

chemical adsorption

No worries! We‘ve got your back. Try BYJU‘S free classes today!

physical adsorption

No worries! We‘ve got your back. Try BYJU‘S free classes today!

both physical adsorption and chemical adsorption

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

none of the above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A both physical adsorption and chemical adsorption
Activated powdered charcoal used in the gas mask is exposed to the atmospheric air so that gases and water vapours in air are adsorbed on its surface.
In general, easily liquifable gases such as $C O_{2}, N H_{3}, C l_{2}$ , and $S O_{2}$ are adsorbed to a greater extent than the elemental gases such as $H_{2}, N_{2}, O_{2}, H e$ etc.
So, gas masks work on the principle of both physical adsorption and chemical adsorption.

Suggest Corrections

Similar questions

\frac{x}{m} = k p^{0.5}

Which statements are correct ?

i) physical adsorption is due to Vander Waal’s forces

ii) physical adsorption decreases at high temperature

iii) physical adsorption is irreversible

iv) enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

Join BYJU'S Learning Program