Question

Either yes or no, explain the reasons of following statements, Corrosion is rusting of iron pH indicators should be used to test for rusting Rusting take place in the presence of oxygen only Rusting will not take place in water(100 Co)and oil mixture Rusting will occur faster in sea water than tap water​

Answer 1

Yes Correct sentence..

Answer 2

Reason for following statements on corrosion.

Explanation:

• Yes, corrosion is rusting of iron. Corrosion means the process in which metals (mainly iron) get converts into brownish color(into oxides) in the presence of moisture, air, water etc. Metals get corrode.
• Yes, pH indicators are used for the testing of rusting. A good example for testing of rusting is phenolphthalein (phph). Selected pH indicators which can be used for testing corrosion are phenol red, cresol red and bromothymol blue. At neutral conditions they show color where phph is clear.
• No, this is not correct that rusting only happens in presence of oxygen. It also happens in presence of water and moisture.
• No, rusting can only take place in presence of water and not in oil mixture as it block the supply of oxygen.
• Yes, rusting will take place faster in sea water than in tap water because sea has salt mixed in it which makes the process of corrosion faster.