MCQOPTIONS
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MCQOPTIONS
This section includes 587 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following increases castability of base metal alloys________________? |
| A. | Tin |
| B. | Beryllium |
| C. | Molybdenum |
| D. | Carbon |
| Answer» C. Molybdenum | |
| 52. |
Which of the following impression materials is easy to pour and difficult to remove the stone cast from the impression ? |
| A. | Addition polysilicone |
| B. | Condensation polysilicone |
| C. | Polyether |
| D. | Polysulfide |
| Answer» E. | |
| 53. |
Which of the following impression material requires a hardener ? |
| A. | Agar |
| B. | Alginate |
| C. | Elastomers |
| D. | Impression compound |
| Answer» B. Alginate | |
| 54. |
Which of the following impression material is elastic________________? |
| A. | Impression compound |
| B. | Zinc Oxide eugenol (ZOE) paste |
| C. | Wax |
| D. | Polyvinyl siloxane |
| Answer» E. | |
| 55. |
Which of the following impression material is rigid ? |
| A. | Zinc oxide-eugenol |
| B. | Reversible hydrocolloid |
| C. | Alginate |
| D. | Polysulphide rubber |
| Answer» B. Reversible hydrocolloid | |
| 56. |
Which of the following has the highest modulus of elasticity ? |
| A. | Dentin |
| B. | Enamel |
| C. | Amalgam |
| D. | Composite Resin |
| Answer» C. Amalgam | |
| 57. |
Which of the following hardness test is a micro hardness test ? |
| A. | Brinnel |
| B. | Knoop |
| C. | Shore-A |
| D. | Rockwell |
| Answer» C. Shore-A | |
| 58. |
Which of the following fuel gases used for soldering, has the highest heat content______________? |
| A. | Hydrogen |
| B. | Natural gas |
| C. | Acetylene |
| D. | Propane |
| Answer» E. | |
| 59. |
Which of the following fuel gases is the best choice of heat source to carry out soldering process ? |
| A. | Propane |
| B. | Acetylene |
| C. | Natural gas |
| D. | Hydrogen |
| Answer» B. Acetylene | |
| 60. |
Which of the following does not occur in High Copper Amalgam ? |
| A. | Electrochemical Corrosion |
| B. | Chemical Corrosion |
| C. | Penetrating Corrosion |
| D. | Corrosion does not occur at all |
| Answer» D. Corrosion does not occur at all | |
| 61. |
Which of the following do polycarboxylate and GIC have in common ? |
| A. | Polysiloxane |
| B. | Phosphoric acid |
| C. | Polyacrylic acid |
| D. | Ion leachable glass |
| Answer» D. Ion leachable glass | |
| 62. |
Which of the following decrease with strain hardening______________? |
| A. | Surface hardness |
| B. | Strength |
| C. | Proportion limit |
| D. | Corrosion resistance |
| Answer» E. | |
| 63. |
Which of the following constituents of amalgam alloy decreases expansion____________? |
| A. | Copper |
| B. | Zinc |
| C. | Silver |
| D. | Tin |
| Answer» E. | |
| 64. |
Which of the following constituents is common in occlusal sealants, bonding agents, composite resins ? |
| A. | BIS GMA |
| B. | Polymethyl methacrylate |
| C. | Benzoin methyl ether |
| D. | Silica filter |
| Answer» B. Polymethyl methacrylate | |
| 65. |
Which of the following component acts as an accelerator in ZOE impression paste ? |
| A. | Zinc Sulphate & Zinc chloride |
| B. | Zinc chloride & Eugenol |
| C. | Zinc Sulphate & Eugenol |
| D. | Glycerin |
| Answer» B. Zinc chloride & Eugenol | |
| 66. |
Which of the following characterizes the silicate cement______________? |
| A. | It is pulpal irritant |
| B. | It is highly cariogenic |
| C. | Chemically attaches to the tooth structure |
| D. | It produces thinnest film surface |
| Answer» B. It is highly cariogenic | |
| 67. |
Which of the following cements is most kind to pulp ? |
| A. | Glass ionomer |
| B. | Polycarboxylate |
| C. | Silicate |
| D. | Resin cement |
| Answer» C. Silicate | |
| 68. |
Which of the following cements is most irritant to pulpal tissues ? |
| A. | Zinc phosphate |
| B. | Silicate |
| C. | Glass ionomer |
| D. | Polycarboxylate |
| Answer» C. Glass ionomer | |
| 69. |
Which of the following cements have anti cariogenic properly________________? |
| A. | ZOE |
| B. | Calcium Hydroxide |
| C. | Zinc silicophosphate |
| D. | Zinc phosphate |
| Answer» D. Zinc phosphate | |
| 70. |
Which of the following cements is most biocompatible with pulp ? |
| A. | GIC |
| B. | Copper cement |
| C. | Zinc phosphate cement |
| D. | Zinc oxide eugenol cement |
| Answer» E. | |
| 71. |
Which of the following cements is contraindicated in mouth breathers_______________? |
| A. | Silicate |
| B. | ASPA |
| C. | Polycarboxylate |
| D. | Zinc phosphate |
| Answer» B. ASPA | |
| 72. |
Which of the following cements bonds to tooth structure, which has an anticariogenic effect, has a degree of translucency and does not irritate the pulp ? |
| A. | Polycarboxylate cement |
| B. | Resin cement |
| C. | Silicate cement |
| D. | Glass ionomer cement |
| Answer» E. | |
| 73. |
Which of the following cast gold alloys is used for fabricating partial denture frameworks______________? |
| A. | Type I – Soft |
| B. | Type II – Hard |
| C. | Type III – Hard |
| D. | Type IV – Extra Hard |
| Answer» E. | |
| 74. |
Which of the following bur is used in the preparation of cavity restored with porcelain fused to metal ? |
| A. | Carbide bur |
| B. | Diamond bur |
| C. | Stainless steel bur |
| D. | Diamond but for porcelain and carbide bur for metal |
| Answer» E. | |
| 75. |
Which of the following best describes the working time of impression material ? |
| A. | After the start of appearing elastic properties of impression material |
| B. | Just after the start of appearing elastic properties of impression material |
| C. | The time for start of mixing till just before the start of appearing elastic properties of impression material |
| D. | Loss of lusture of impression material |
| Answer» D. Loss of lusture of impression material | |
| 76. |
Which of the following best describes the working time of elastomeric impression material ? |
| A. | After the start of appearing elastic properties of impression material |
| B. | Just after the start of appearing elastic properties of impression material |
| C. | Just before the start of appearing elastic properties of impression material |
| D. | Loss of luster of impression material |
| Answer» D. Loss of luster of impression material | |
| 77. |
Which of the following are characteristic feature of high copper amalgam alloy ? |
| A. | Low compressive strength |
| B. | High marginal breakdown |
| C. | Less marginal # |
| D. | High creep |
| Answer» D. High creep | |
| 78. |
Which of the following acts as accelerator in Zinc oxide eugenol______________? |
| A. | ZnCl2 + Eugenol |
| B. | ZnCl2 + ZnSO2 |
| C. | Eugenol + ZnO |
| D. | Zn(OH)2 + ZnO |
| Answer» C. Eugenol + ZnO | |
| 79. |
Which of the following absorbs maximum amount of water ? |
| A. | Microfilled resin |
| B. | Macrofilled resin |
| C. | Hybrid |
| D. | Light cure activated |
| Answer» B. Macrofilled resin | |
| 80. |
Which material undergoes hysteresis ? |
| A. | Irreversible hydrocolloid |
| B. | Reversible hydrocolloid |
| C. | Impression plaster |
| D. | Metallic oxide paste |
| Answer» C. Impression plaster | |
| 81. |
Which material is the most difficult to remove from the patients mouth ? |
| A. | Metallic oxide paste |
| B. | Silicone impression material |
| C. | Reversible hydrocolloid |
| D. | Impression plaster |
| Answer» B. Silicone impression material | |
| 82. |
Which is true regarding lathe cut silver alloy_______________? |
| A. | Requires least amount of mercury |
| B. | Achieves lowest compressive strength at 1 hr. |
| C. | Has tensile strength both at 15 min & 7 days comparable to high copper unicompositional alloy |
| D. | Has low creep |
| Answer» C. Has tensile strength both at 15 min & 7 days comparable to high copper unicompositional alloy | |
| 83. |
Which is the use of boxing an impression______________? |
| A. | Ease of construction of denture |
| B. | Preserving the sulci |
| C. | Ease of pouring an impression |
| D. | All of the above |
| Answer» D. All of the above | |
| 84. |
Which is the cement with adhesive properties ? |
| A. | Zinc oxide eugenol |
| B. | Zinc polycarboxylate |
| C. | SIlicate |
| D. | Glass ionomer |
| E. | Both B & D |
| Answer» F. | |
| 85. |
Which is not true about high copper amalgam alloys______________? |
| A. | Low tensile and compressive strength |
| B. | Low Hg: Alloy ratio |
| C. | High tensile strength |
| D. | Low creep |
| Answer» B. Low Hg: Alloy ratio | |
| 86. |
Which is not present in porcelain________________? |
| A. | Silica |
| B. | Feldspar |
| C. | Calcium carbonate |
| D. | Amorphous material |
| Answer» E. | |
| 87. |
Which is gypsum product_______________? |
| A. | Stone |
| B. | Plaster |
| C. | Investment |
| D. | All of the above |
| Answer» E. | |
| 88. |
Which is best material for RPD impression_______________? |
| A. | Impression plaster |
| B. | Irreversible hydrocolloid |
| C. | Reversible hydroollioid |
| D. | None of the above |
| Answer» C. Reversible hydroollioid | |
| 89. |
Which glass ionomer cement develops early resistance to water intake on setting ? |
| A. | Reinforced auto care glass ionomer cement |
| B. | Compomer |
| C. | Resin modified glass ionomer cement |
| D. | Ceramic reinforced glass ionomer cement |
| Answer» D. Ceramic reinforced glass ionomer cement | |
| 90. |
Which component of zinc oxide-eugenol cement gives its strength ? |
| A. | Rosin |
| B. | Zinc oxide |
| C. | Zinc acetate |
| D. | Oil of cloves |
| Answer» C. Zinc acetate | |
| 91. |
Which cement is irritating to the pulp ? |
| A. | Carboxylate cement |
| B. | Zinc oxide-eugenol cement |
| C. | Zinc phosphate |
| D. | Ethoxybenzoic acid |
| Answer» D. Ethoxybenzoic acid | |
| 92. |
Which cement base has the highest modulus of elasticity ? |
| A. | Zinc polycarboxylate |
| B. | Polymer reinforced ZOE cement |
| C. | Zinc phosphate |
| D. | Glass inomer cement |
| Answer» D. Glass inomer cement | |
| 93. |
When two metals are completely miscible in liquid state and they remain completely mixed on solidifiation, the alloy formed is called________________? |
| A. | Solid solution |
| B. | Eutectic mixture |
| C. | Peritectic mixture |
| D. | Inter metallic compounds |
| Answer» B. Eutectic mixture | |
| 94. |
When solid gets wet completely contact angle is______________? |
| A. | 90° |
| B. | 0° |
| C. | 0 – 90° |
| D. | >90° |
| Answer» C. 0 – 90° | |
| 95. |
When selection the colour of cement to use for cementing a porcelain jacket crown, the powder being tested is best mixed with______________? |
| A. | Glycerin-water solution |
| B. | Cement liquid |
| C. | Alcohol |
| D. | Only water |
| Answer» B. Cement liquid | |
| 96. |
When restoring a tooth with resin material, acid etching can do all of the following except______________? |
| A. | Increase the surface area |
| B. | Permit chemical bonding between resin and enamel |
| C. | Create surface irregularities in enamel for better mechanical retention of resin |
| D. | Condition the tooth surface for better wetting |
| Answer» C. Create surface irregularities in enamel for better mechanical retention of resin | |
| 97. |
When porcelain is basked against metal, it should possess a________________? |
| A. | high fusion expansion |
| B. | high fusion temperature |
| C. | linear coefficient of thermal expansion less than but close to that of metal |
| D. | Linear coefficient of thermal expansion greater than, but close to that of the metal |
| Answer» D. Linear coefficient of thermal expansion greater than, but close to that of the metal | |
| 98. |
When making a polysulphide impression for a caste crown, custom trays are usually preferred over stock trays for all of the following reasons except_______________? |
| A. | Custom trays facilitate uniform contraction of impression material |
| B. | Custom trays require less impression material |
| C. | Stock trays may be short in the flange area |
| D. | Impressions made n the custom trays are easier to remove from the mouth |
| Answer» E. | |
| 99. |
When Gold fused with porcelain is fired at very high temperature greenish discoloration of cervical margin is due to________________? |
| A. | High firing temperature |
| B. | Disintegration of opaque layer |
| C. | Presence of copper |
| D. | Formation of excess oxides |
| Answer» D. Formation of excess oxides | |
| 100. |
What is the working time of amalgam? |
| A. | One to two minutes |
| B. | Three to four minutes |
| C. | Five to six minutes |
| D. | Seven to eight minutes |
| Answer» C. Five to six minutes | |