Which of the following is correct__________?
Setting expansion is advantageous in__________?
Back pressure porosity can be avoided by__________?
Which of the following zones is used for melting alloy during casting__________?
Cleaning of base metal alloy is done by__________?
Which one of the following is most elastic ?
A thinner mix of a gypsum bonded investment will__________?
Stainless steel orthodontic wire can be hardened by__________?
NiTi alloy have__________?
The main form of iron carbide found in 18-8 steel__________?
The strength of a gypsum investment is dependent on__________?
Ideal requirement of metal ceramic casting__________?
The pattern for the metallic framework of a removable partial denture is fabricated from__________?
The contraction of gold alloy on solidifying is approximately__________?
Tempering of steel cause__________?
Which of the following will produce the most rigid restoration for framework of same dimension ?
Apart from composites and ceramics, another material that could be copy milled easily and inexpensively is__________?
Austenite is an alloy of iron of and carbon with the iron in__________?
Which zone is the hottest and efficient burning zone of the flame used for casting ?
Localised shrinkage porosity is seen when there__________?
Sub surface porosity can be decreased by__________?
The inlay wax most commonly used for direct technique__________?
The purity of gold is expressed in__________?
In a metal ceramic crown for a FPD the function of tin, indium which are readily oxidized minor constituents is to__________?
Investment material used for cobalt-chromium alloys is__________?
Silica sol__________?
Boxing wax is also called as__________?
Shape memory in NiTi is because of stress induced form__________?
Casting shrinkage is compensated by__________?
The gold alloys used for casting contain at least…. percent of precious metal according to ADA specification number 5__________?
Impurities in casting is removed by__________?
Shape memory is seen in__________?
The best pickling solution for gypsum bonded investment is__________?
Corrosion of stainless steel is due to formulation of__________?
The rapid decrease in tensile strength and increase in ductility of a wrought metal is seen in which stage of annealing ?
Which one of the following categories of dental materials has the highest thermal conductivity__________?
Most biocompatible material in oral cavity is__________?
Which of the waxes are derived from the lignite__________?
Silver plated dyes use an electrolytic bath of__________?
Suck back porosity is due to__________?
Air bubbles formed on the surface of casting is probably due to__________?
Asbestos liner is used in a casting ring to__________?
Which of the following decrease with strain hardening__________?
Suck back porosity in the casting can be eliminated by__________?
The component in very minor quantity in stainless steel that changes the properties to a maximum level is__________?
Binder used in Gypsum investment is__________?
Nickel-Titanium alloy has__________?
Advantage of titanium over other base metal alloys__________?
Component of inlay wax which makes it flake resistant is__________?
Microstructure of cobalt chromium alloy in cast condition is__________?
Dendrites in cst alloys form by mechanism of__________?

Pickling________________?

A. Is accomplished by soaking the casting in baking soda
B. Causes porosity in gold
C. Removes surface oxides from gold castings
D. Remove investment from gold casting

Correct Answer: Removes surface oxides from gold castings ✔

Last Updated: February 07, 2020