Multiple Choice Question Answer XXXXI — task. Science CBSE, Class 10.

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1. Which of the following is/are obtained as product of corrosion of certain metals

\(CuCO_3.xCu(OH)_2\)
\(Fe_2O_3.xH_2O\)
\(Ag_2S\)
All of these

2. The methods of prevent corrosion can be

Painting the surface of metal
Greasing the surface of metal
Varnishing or coating the surface of metal
All of the above

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