A. Rapid solidification of metal
B. No place for reservoirs
C. Incomplete evacuation of gases
D. Difficulty in removing casting from investment
Related Mcqs:
- The function of a sprue is to_______________?
A. Form an opening of molten metal to enter the mold
B. Help polish cast restorations
C. Eliminate air bubbles on the wax pattern
D. Reproduce fine detail - 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 - Short-acting non-depolarising muscle relaxant is________________?
A. Succinylcholine
B. Pancuronium
C. Mivacurum
D. Decamethonium - The most important disadvantage of acrylic denture base is_______________?
A. porosity
B. Shrinkage
C. Tooth breakage
D. Water absorption - What is the disadvantage of using composites as restorative material ?
A. Increased thermal conductivity
B. Decreased wear resistance
C. Decreased thermal conductivity
D. None of the above - The most commonly used Titanium alloy for dental and medical purposes is________________?
A. Ti 6Al 4V
B. Ti 5Al 4V
C. Ti 5Al 5V
D. Ti 6Al 6V - The rate of tarnish and corrosion of class II cast material having VHN 200 is_______________?
A. 0%
B. 2 to 3%
C. 5 to 10%
D. <1% - The processing of short-term memory to long term memory is done in_______________?
A. Prefrontal cortex
B. Hippocampus
C. Neocortex
D. Amygdala - A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ?
A. Pasturella spp
B. Francisella spp
C. Bartonella spp
D. Brucella spp - Which of the following is a short acting barbiturate ?
A. Diazepam
B. Secobarbital
C. Pentobarbital
D. Phenobarbita
