Discolouration of silver alloy is due to_____________?
Correct answer: B. Tarnish and corrosion
- A. Tarnish
- B. Tarnish and corrosion
- C. Wet corrosion
- D. Dry corrosion
Explanation
Silver-alloy discoloration results from both tarnish, which is surface chemical discoloration, and corrosion, which involves material degradation. Therefore, the combined option is more complete than tarnish alone.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Restorative Materials
115 free Restorative Materials MCQs from Dental Materials, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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 Restorative Materials questions
Advantage of zinc containing amalgam is_______________?
What is the working time of amalgam?
The percentage of copper in high copper alloy is______________?
Moisture contamination of amalgam can lead to_____________?
In a high copper amalgam the phase, which is eliminated is_______________?
In spherical alloys as compared to lathe cut____________?