Physical adsorption is essentially quite appr | vedclass

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(C) Physical adsorption is an exothermic process,where the enthalpy change $(\Delta H)$ is negative. According to Le Chatelier's principle,for an exot

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At lower temperature

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(C) Physical adsorption is an exothermic process,where the enthalpy change $(\Delta H)$ is negative. According to Le Chatelier's principle,for an exothermic process,the extent of adsorption decreases with an increase in temperature. Therefore,physical adsorption is more significant and appreciable at lower temperatures.

Physical adsorption is essentially quite appreciable:

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