The necessary condition for rusting is ………
a)moisture
b) fire
c) air
d) a & c both
….…are the sites for the process of rusting.
a) dents
b) glow
c) stains
d) a & c both
The sites for the process of rusting are called
a) cathodic region
c) holes
b) anodic region
d) none of these
The rust mass is ……..in nature
a) hard
b) soft
c) porous
d) b & c both
Corrosion prevention techniques are classified into …….. groups.
a) five
b) six
c) two
d) three
Methods to prevent corrosion are ………
a) paints and coatings
b) alloying
c) cathodic protection
d) all of these
