The gold alloys used for casting contain at least…. percent of precious metal according to ADA specification number 5________________?

Related Mcqs:

Incomplete casting is the result of_____________?

A. More porous investment in the mould B. Narrow sprue diameter C. Hollow sprue pin D. Large reservoir...

The sprue in wax pattern should be placed________________?

A. At right angle B. At 45°C angle C. At obtuse angle D. It depend upon type of wax pattern...

Function of wetting agents used in casting procedure is_________________?

A. To felicitate wetting of ring liner B. To felicitate mixing investment C. To reduce contact angle of liquid with max surface D. For better wax elimination...

Quartz is added to gypsum bonded investment to______________?

A. Increase the strength B. Counter balance contraction of gypsum during heating C. aid in hygroscopic expansion D. Increase the shelf life of investment...

The rapid decrease in tensile strength and increase in ductility of a wrought metal is seen in which stage of annealing ?

A. Recovery stage B. Recrystallisation stage C. Grain growth stage D. All of the above...