Modern dental noble metal casting alloys generally have equiaxed fine grain structures because of the incorporation of small amounts of______________?
Correct answer: C. Irridium
- A. Chromium
- B. Indium
- C. Irridium
- D. Palladium
Explanation
Small amounts of iridium act as grain refiners, producing a fine equiaxed grain structure in noble metal casting alloys. Palladium modifies properties but is not the usual grain-refining addition in this context.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
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.
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
Which of the following cast gold alloys is used for fabricating partial denture frameworks______________?
The linear solidification shrinkage of Type IV Ni-Cr based alloys is_______________?
With indirect spruing. Which one of the following porosities can be minimised_______________?
Nickel is added to wrought gold alloys as______________?
Stages of annealing in order_________________?
The term ordered hardening heat treatment used in which of the following dental alloys ?