7000+ Metallurgy and Corrosion MCQ Questions and Answers - 1
Question: 1
Which metal is protected against corrosion by the layer of its own oxide?
(A) Aluminium
(B) Calcium
(C) Silver
(D) Iron
Ans: A
Aluminium
Question: 2
Ships operating in sea water are guarded against corrosion by
(A) Anodic coating
(B) Ceramic coating
(C) Cathodic protection
(D) Painting the outer surface
Ans: C
Cathodic protection
Question: 3
Deposition of aluminium vapour on metallic surface is called
(A) Hot dipping
(B) Electroplating
(C) Sherardising
(D) Calorising
Ans: D
Calorising
Question: 4
Erosion corrosion is encountered in
(A) Alkaline environment only
(B) Vibrating bearings
(C) Clamped/press fits
(D) Centrifugal pumps and steam turbines
Ans: D
Centrifugal pumps and steam turbines
Question: 5
Which is an example of cathodic protection?
(A) Case hardened steel
(B) Lead lined reactor
(C) Painted steel
(D) Galvanised iron
Ans: D
Galvanised iron
Sterilisation Culture Media and Pure Culture MCQ Questions Pdf More
Immunology Multiple Choice Questions and Answers Pdf More
Immunology Question Bank with Answers Pdf More
Immunology MCQ Questions and Answers Pdf More
Industrial Microbiology Questions and Answers Pdf More
1000+ IBPS Clerk Practice Set Pdf More
TNPSC Indian History Multiple Choice Questions and Answers More
1000+ Distributed Control Systems Objective Questions and Answers More
Top 50+ Cell Biology Multiple Choice Questions and Answers More
TNPSC Group 1 Study Material for Prelims Free Download More