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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
Why is adsorption always exothermic?
Write any two characteristics of chemisorption.
What are the factors which influence the adsorption of a gas on a solid?
Discuss the effect of temperature on the adsorption of gases on solids.
Write one similarity between Physisorption and Chemisorption
Physisorption is reversible while chemisorption is irreversible. Why ?
How does chemisorption vary with temperature?
Which of the following compounds is formed when tungsten adsorbs oxygen gas?
Which of the following is an example of physisorption?
Powdered substances are more effective adsorbents than their crystalline forms because ____________.
Which of the following is not a favourable condition for physical adsorption?
Why do physisorption and chemisorption behave differently with rise in temperature?
What is the role of diffusion in heterogenous catalysis?
Assertion: Detergents with low CMC are more economical to use.
Reason: Cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.
Which among the following is a false statement?
In physical adsorption, gas molecules are bound on the solid surface by
