1.

{:(1. "Galvanisation",,(a) "Noble gas elements"),(2."Calcination ",,"(b) Coating with Zn"),("3. Redox reaction",,"(c) Silver-tin amalgam"),("4. Dental filling",,"(d) Alumino thermic process"),("5.Group 18 elements",,"(e) Heating in the absence of air"):}

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Solution :1-(b), 2-(E ), 3-(d), 4-(c ), 5-(a)


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