Medical MCQs

5099 MCQs  (Page 47 of 510)

Biological activity of tocopherols has been attributed, in part to their actions as_____________?
A. Antioxidant
B. Anticoagulants
C. Provitamin
D. Antidotes for selenium posioning
Which vitamin is the most indispensable during mitosis______________?
A. Folic acid
B. Pantothenic acid
C. Ascorbic acid
D. Aspartic acid
A material behaves in certain ways above and below the proportional limit on a stress strin curve, which of the following is correct______________?
A. Above the proportional limit a material function in a plastic manner, while below the proportional limit it behaves as an elastic
B. Above the proportional limit a material functions in an elastic manner, while below the proportional limit it behaves as an plastic
C. Either a or b
D. Neither a or b
Porosity present in a acrylic denture is usually the result of______________?
A. A prolonged curing cycle
B. Lack of sufficient pressure applied to flask
C. Insufficient acrylic resin monomer
D. Prolonged bench cooling after curing
Acrylic resins are used for______________?
A. Anterior restorations
B. Temporary bridges
C. Denture base
D. All of the above
The main advantage of composites over unfilled direct filling resin is their_____________?
A. Higher solubility in saliva
B. Lower modulus of elasticity
C. Esthetic excellence
D. Lower thermal co-efficient of expansion