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Subjects
Science CBSE Homework Assignments
Class 10
Metals and Non-Metals
Corrosion

1. Corrosion I

Task:

3 m.

1. Silver articles become black on prolonged exposure to air. This is due to the formation of

\(Ag_2S\)
\(Ag_2O\)
\(Ag_2S\) and \(Ag_3N\)
\(Ag_3N\)

2. Galvanisation is a method of protecting iron from rusting by coating with a thin layer of

Aluminium
Gallium
Zinc
Silver

3. Stainless steel is very useful material for our life. In stainless steel, iron is mixed with

\(Cu\) and \(Au\)
\(Ni\) and \(Cr\)
\(Cu\) and \(Cr\)
\(Ni\) and \(Cu\)

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