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प्रश्न
State four ways of preventing rusting.
उत्तर
Rusting Can be prevented by :
- Galvanising – iron metal is coated with zinc.
- Enamelling – iron surface is baked with mixutre of silicates at high temperature.
- Coating with red lead oxide paint or tar on iron surface.
- Oils and grease coating on iron surface cuts off moist air and prevents rusting.
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