Question

___ is to subject as iron is to metal​

Answer 1

Answer:

what is to subject as iron is to metal

Ans - The main disadvantage to this is that it, being a relatively pure form of Iron is subject to corrosion at the hands of the moisture and air.

Answer 2

HEYA, BUDDY !!

Firstly, corrosion is the naturally occurring process which involves changes in the physical and chemical properties of the refined metal which converts to a more stable form that is either oxides, sulphides or may be hydroxides.

➦ Corrosion occurs due to several reasons. The main factor which plays a role is the prolonged exposure to air which consists of a mixture of several gases.

➦ Rusting of iron is the common example we can see in our daily lives. The metal iron reacts with the oxygen and moisture in air exposure to iron oxide which is a compound and this is reddish brown in colour.

➦ Apart from common corrosion, even electrochemical corrosion also occurs.

Therefore the iron surface basically undergoes corrosion and thus there is change in element to compound.

We know that, The main point to be noted here is that corrosion is a process that occurs due to external factors and thus the inside of the object is not affected but the physical and chemical change occurs on the surface of the metal.