6.Which of the following methods is not used for the prevention of corrosion?
6.Which of the following methods is not used for the prevention of corrosion?
The correct option is D heating
Corrosion: A degradation of the metal surface by the action of air or moisture when left uncovered is called corrosion.
Explanation for the correct option:
d) Corrosion can be prevented by creating a barrier between object and oxygen which can’t be done by heating.
Explanation for the incorrect options
a) When some grease is applied to the surface of an iron object, then air and moisture cannot come in contact with it, and hence rusting can be prevented.
b) When the paint is applied on the surface of an iron object, then air and moisture cannot come in contact which protects it from getting rust.
c) When a layer of chromium is deposited on an iron object, then the iron object is protected from rusting.
Therefore, option (d) is incorrect.
heating
Corrosion: A degradation of the metal surface by the action of air or moisture when left uncovered is called corrosion.
Explanation for the correct option:
d) Corrosion can be prevented by creating a barrier between object and oxygen which can’t be done by heating.
Explanation for the incorrect options
a) When some grease is applied to the surface of an iron object, then air and moisture cannot come in contact with it, and hence rusting can be prevented.
b) When the paint is applied on the surface of an iron object, then air and moisture cannot come in contact which protects it from getting rust.
c) When a layer of chromium is deposited on an iron object, then the iron object is protected from rusting.
Therefore, option (d) is incorrect.
