Top 1000+ Solved Material Science MCQ Questions Answer
Q. metallic component gets fatigue due to which type of stresses applied
a. tensile stresses
b. compression stresses
c. shear stresses
d. cyclic stresses
Q. one of the following is a preventive measure to control corrosion fatigue failure
a. eliminate cyclic stresses
b. reduces stress concentratio n
c. obtain a smooth and shiny surface on the metal
d. all of the above
Q. high temperature corrosion of a carbon stee; can be a problem at a temperature above
a. 500 oc
b. 1000 oc
c. 1500 oc
d. none of the above
Q. the best example of high temperature corrosion is
a. creep failure
b. oxidation
c. high temperature hydrogen attack
d. all of the above
Q. the rate of corrosion increases as the temperature ncreases. The statement given is
a. false
b. true
c. not applicable to it
d. none of the above
Q. one of the following methods is not a corrosion prevention method
a. internal and external coating
b. corrosion inhibitor
c. cathodic and anodic protection
d. all of the above
Q. one of the following methods is not a corrosion prevention method
a. use of special alloys
b. removal of corrosive gases
c. dehydration
d. all of the above
Q. non metalic coatings are more durable than metallic coatings. The given statement is
a. true
b. false
c. not applicable to it
d. none of the above
Q. metaliic coatings gives best protection against corrosion over metallic coating. The statement is
a. false
b. true
c. not applicable to it
d. none of the above
Q. non metallic coating gives best protection against corrosion over metallic coating. The statement is
a. true
b. false
c. not applicable to it
d. none of the above
Q. metalic coatings are more durable than nonmetalic coatings. This statement is
a. false
b. true
c. not applicable to it
d. none of the above
Q. one of following method is a metallic coating method for protection from corrosion
a. metal spraying
b. electroplatin g
c. metal cladding
d. all of the above
Q. in hot dipping process, liquid metal of zinc is never used in any case. This statement is
a. true
b. false
c. not applicable to it
d. none of the above
Q. in hot dipping method of metal coating, which metal is coated on the steel to protect from corrosion ?
a. silver
b. aluminium
c. chromium
d. zinc
Q. in hot dipping method of metal coating, which one of the following metal is used ?
a. copper
b. silver
c. aluminium
d. none of the above