Question

The coating formed on the metals such as iron, silver and copper after corrosion will be: (a) Brown, black and green in colour (b) Black, brown and green in colur (c) Brown in colour in all the metals (d) Black in colour in all the metals

Answer 1

the coating formed on the metal such as iron silver and copper after collision will be brown black and green.

Option a:

Explanation:

• due to corrosion there is a change in colour of iron from the  original reddish colour to the brown colour in rust
• in case of copper the colour changes from reddish brown to black due to the formation of copper oxide. In case of silver there is formation of silver oxide which has a characteristic green colour. This occurs due to the coating of the oxide of the corresponding metal

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Answer 2

Answer:

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