Question

04
the said advertisement is put on an iron boarding them, due to which natural phenoumenon is the hoarding most likely to turn the orange red brown colur
c
a​

Answer 1

Answer:

The correct answer

Explanation:

According to me,the phenomenon given in the above question is called "Rusting".

In the above question we can study that advertisement is put on an iron boarding them, due to which natural phenoumenon is the hoarding most likely to turn the orange red brown colur.

The rusting makes the orange colour in to brown.

Rusting would only be a physical change if iron molecules remained pure iron throughout the process. The rusting of iron is an illustration of the principle of corrosion. Corrosion is a chemical change that usually occurs in metals that come into contact with an electrolyte. Water is the electrolyte that most commonly enables oxygen and iron to combine. This is why iron rusts when exposed to both water and air. Covering iron with a coat of paint or zinc is an effective way of deterring rust because it prevents the pure iron from coming into contact with air. There are several processes iron can undergo that are physical changes. Melting and any other change of state is a physical change, as well as magnetising or demagnetising.