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Select the correct statement...

Select the correct statement

A

pressure of `CO_(2)` increases rate of rusting

B

silver plating is done with the help of `K[Ag(CN)_(2)]`

C

saline water slow down rusting

D

pure metals undergo corrosion faster than impure metals

Text Solution

Verified by Experts

The correct Answer is:
A, B
(a) The rust is formed by the action of water on iron in the presence of dissolved oxygen and `CO_(2)`
(b) Silver plating is done with the help of `K[Ag(CN)_(2)]`
(c) saline water helps in carrying current in the miniature cell formed and thus enhances the formation of `Fe^(+2)` ion which increases the formation of iron rust.
(d) Impurities present in the metalk helps in rusting. Highly pure from of Iron rusts very slowly
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