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Absorption of hydrogen on a metal surface is known as __________(a) adsorption(b) occlusion(c) absorption(d) emissionThis question was addressed to me by my college professor while I was bunking the class.The origin of the question is Dihydrogen as a Fuel in chapter Hydrogen of Chemistry – Class 11

Answer»

The CORRECT answer is (b) occlusion

Explanation: Occlusion is nothing but the ABSORPTION of hydrogen at a metal surface which is a PRIMARY CAUSE of reduction, hydrogenation, etc. As the temperature increases, occlusion decreases i.e. they are dependent on each other.



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