Metals undergo corrosion with water and oxygen present in air. Write the formula of coating on iron and copper developd during corrosion.

Name a metal which undergoes corrosion is air?

Name the metal which is electroplated on iron to protect it from corrosion.

In electrochemical corrosion of metals, the metal undergoing corrosion:

In galvanisation, metal plating on iron to protect against corrosion is:

Can tin coating on iron act as sacrificial anode in protecting iron against corrosion?

What is formula of greenish coating on the surface of copper when it is exposed to air and moisture?

Using the E^@ values of A and B, predict which one is better for coating the surface of iron [E^@(Fe^(2+)/Fe=-0.44V] to prevent corrosion and why? Given: E^@(A^(2+)|A)=-2.37V and E^@(B^(2+)|B)=-0.14V .

The crystals of compound A on keeping in air get converted into a white powder. Its solution in water gives blue colour with red litmus. It is used to remove permanent hardness of water. Identify the substance. Write chemical formula of its crystalline form.

On heating copper powder in air, the surface of copper powder becomes coated with black CuO. How can this black be converted into brown copper? Write chemical equation for the reaction that occurs during the colour change.