Question : Which metal does not undergo corrosion due to the formation of oxide layer?
Option 1: Copper
Option 2: iron
Option 3: Aluminium
Option 4: Znic
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Correct Answer: Aluminium
Solution : The correct answer is Aluminium.
Aluminium is a metal and it has an atomic number of 13. It is highly chemically reactive but it does not corrode because it reacts with atmospheric oxygen and forms a protective layer of aluminium oxide, which prevents it from further corrosion. Formation of aluminium oxide is the reason for the blackening of aluminium utensils.
How to crack SSC CHSL
Candidates can download this e-book to give a boost to thier preparation.
