Question

The adsorption of hydrogen by metals is called
(a) Dehydrogenation
(b) Hydrogenation
(c) Occlusion
(d) Adsorption

Answer 1

b) hydrogenation......

Answer 2

The adsorption of hydrogen by metals is called occlusion.

Explanation:

Dehydrogenation is the process in which hydrogen is removed.

$CH_3-CH_3\rightarrow CH_2=CH_2+H_2$

Hydrogenation is the process in which hydrogen is added.

$CH_2=CH_2+H_2\rightarrow CH_3-CH_3$

Occlusion is the process of  adsorption of hydrogen by metals.

Adsorption is the process in which absorption occurs only at the surface.

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