Passivating alloys are_______________?
Correct answer: C. Cr, Al, Ti
- A. Cr, Gold, Ti
- B. Cr, Mo, Ti
- C. Cr, Al, Ti
- D. Cr, Fe, Ti
Explanation
Chromium, aluminium, and titanium readily form thin, adherent oxide films that protect the underlying alloy from further corrosion, producing passivation. Gold does not passivate in this way, and iron alone is not the defining element in this group.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Metals and Alloys
125 free Metals and Alloys MCQs from Dental Materials, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Dental Materials questions like this
Dental Materials is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Metals and Alloys questions
Crucible indicated for casting base metal alloys is______________?
Heat hardening is the process done at_______________?
Titanium casting is done_____________?
A common electrolyte used for plating copper indirect dies is_______________?
Stainless steel is used mostly in dentistry_________________?
The porosity formed due to simultaneous nucleation of solid grains and gas bubbles at the first moment that metal freezes at the mold walls is called__________?