Top 1000+ Solved Material Science MCQ Questions Answer
Q. in electroplating process for a metal coating, the metallic component on which coating is
a. anode
b. cathode
c. electrolyte solution
d. none of the above
Q. in electroplating process for metal coating, the metallic component on which coating is needed, is made anode in the process. This statement is
a. false
b. true
c. not applicable to it
d. none of the above
Q. one of the following is a metal used for metallic coatings, used fro protection from corrosion
a. chromate coating
b. phosphate coating
c. plastic coating
d. all of the above
Q. one of the following is a non-metallic coatings, used for protection from corrosion
a. chromate coating
b. phosphate coating
c. plastic coating
d. all of the above
Q. corrosion inhibitors are used to protect the metal from corrosion. This statement is
a. true
b. false
c. not applicable to it
d. none of the above
Q. corrosion inhibitors are applied on the metal by electroplating process. Te statement is
a. true
b. false
c. not applicable to it
d. none of the above
Q. corrosion inhibitors are the chemicals that react with the metal surface, gets absorb and form a thin film on metal . This statement is
a. true
b. false
c. not applicable to it
d. none of the above
Q. one of the following is the main application of corrosion inhibitors
a. power plant
b. engine coolin g system
c. pipeline carrying hydrocarbon s
d. none of the above
Q. the corrosion inhibitor work by one of following mechanisms
a. they form precipitate and coat the metal
b. they combine with corrosion product films
c. they absorb on metal surface
d. all of the above
Q. one of the following is inhibitor which is used in metal protection.
a. zinc
b. aluminium
c. copper
d. none of the above
Q. in cathodic protection, it protects the metal by coating it with a suitable method. This statement is --
a. true
b. false
c. not applicable to it
d. none of the above
Q. one of the following processes is a cathodic protection method.
a. hot dipping
b. electroplatin g
c. impresssed current
d. phosphating
Q. one of the following processes is a cathodic protection method.
a. metal cladding
b. metal spraying
c. hot dipping
d. none of the above
Q. one of the following processes is a cathodic protection method.
a. metal spraying
b. electroplatin g
c. metal cladding
d. sacrificial anode
Q. one of the following is a main advantage of sacrificial anode method
a. external power supply is not required
b. minimum maintenance
c. very easy to operate
d. all of the above