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Subjects
Science CBSE
Class 7 New
The World of Metals and Non-metals
Pumpa Practice Questions
28.
Corrosion
Exercise condition:
2
m.
Pick
the
right
answer:
1.
Silver obtains a _________ coating on exposure to air.
Green
White
Black
Blue
2.
How is the process of corrosion of iron commonly called?
Electroplating
Galvanising
Anodising
Rusting
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