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प्रश्न
What is the role of activated charcoal in gas mask used in coal mines?
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उत्तर
Role of activated charcoal can be explained on the basis of adsorption. In gas mask, charcoal adsorbs the pollutant gases like \[\ce{SO2, NO2, CH4, CO2}\] etc. present in atmosphere due to heavy traffic.
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संबंधित प्रश्न
Write the differences between physisorption and chemisorption with respect to the following:
(i) Specificity
(ii) Temperature dependence
(iii) Reversibility and
(iv) Enthalpy change
Give reasons for the following observations:
Physisorption decreases with increase in temperature.
What is the effect of temperature on chemisorption ?
Why is adsorption always exothermic?
What are the factors which influence the adsorption of a gas on a solid?
Write one similarity between Physisorption and Chemisorption
How does chemisorption vary with temperature?
Answer in one sentence:
Name type of adsorption in which vander Waals focres are present.
Adsorption increases when ____________.
Which among the following is a property of physisorption?
Powdered substances are more effective adsorbents than their crystalline forms because ____________.
Chromatography is based on the principle of ____________.
Which of the following is not a favourable condition for physical adsorption?
Physical adsorption of a gaseous species may change to chemical adsorption with ______.
In physisorption adsorbent does not show specificity for any particular gas because ______.
What is the role of diffusion in heterogenous catalysis?
What is the role of adsorption in heterogenous catalysis?
Write three differences between physisorption and chemisorption.
