Medical MCQs

Option A: 0.2% to 0.5%

Option B: 2% to 5%

Option C: 0.3% to 0.5%

Option D: 2% to 5%

Correct Answer: 2% to 5% ✔

Option A: Removes smear layer

Option B: Increases surface energy of dentin

Option C: Forms a thin resin layer over exposed collagen fibrils

Option D: Helps in bonding with composite

Correct Answer: Removes smear layer ✔

Option A: Step-growth polymerization

Option B: Addition polymerization

Option C: Condensation polymerization

Option D: Copolymerization

Correct Answer: Copolymerization ✔

Option A: Internal color

Option B: Tissue compability

Option C: Surface hardness

Option D: Craze resistance

Correct Answer: Craze resistance ✔

Option A: Thermal changes

Option B: Thickness of the resin

Option C: Lack of temperature

Option D: Packing past the dough stage

Correct Answer: Thermal changes ✔

Option A: Distortion

Option B: Porosity

Option C: Inhomogeneous colour

Option D: Increased strength

Correct Answer: Porosity ✔

Option A: Quartz

Option B: Silicates

Option C: Zinc particles

Option D: Aluminium

Correct Answer: Quartz ✔

Option A: Poor colour stability

Option B: Less polymerization shrinkage

Option C: Increase in vertical dimension

Option D: Decrease in vertical dimension

Correct Answer: Increase in vertical dimension ✔

Option A: 300 mw/sm2

Option B: 350 mw/cm2

Option C: 400 mw/cm2

Option D: 450 mw/cm2

Correct Answer: 300 mw/sm2 ✔

Option A: Tertiary amine

Option B: Benzoyl peroxide free radical

Option C: Hydroquinone

Option D: Methyl ether

Correct Answer: Benzoyl peroxide free radical ✔

Option A: Throughout the denture

Option B: Near the borders

Option C: In the thickest part

Option D: On the denture surface

Correct Answer: In the thickest part ✔

Option A: Low compressive strength

Option B: High abrasive resistance

Option C: High water absorption

Option D: High polymerization shrinkage

Correct Answer: High abrasive resistance ✔

Option A: Poor colour stability

Option B: Less polymerization shrinkage

Option C: Increase in vertical dimension

Option D: Decrease in vertical dimension

Correct Answer: Increase in vertical dimension ✔

Option A: Thermal changes

Option B: Thickness of the resin

Option C: Lack of temperature

Option D: Packing past the dough stage

Correct Answer: Thermal changes ✔

Option A: Distortion

Option B: Porosity

Option C: Inhomogeneous colour

Option D: Increased strength

Correct Answer: Porosity ✔

Option A: Quartz

Option B: Silicates

Option C: Zinc particles

Option D: Aluminium

Correct Answer: Quartz ✔

Option A: Zinc oxide

Option B: Methyl methacrylate

Option C: Phosphoric acid

Option D: Eugenol

Correct Answer: Phosphoric acid ✔

Option A: Addition of grain refining agents

Option B: Addition of difunctional monomers

Option C: Increasing the amount of heat required for linear polymerization

Option D: Incorporation of terminating agents

Correct Answer: Addition of difunctional monomers ✔

Option A: Should be held at a millimeter distance from the restoration

Option B: Need no protection while in use

Option C: Will cure composite upto a depth of 5 millimeter thickness

Option D: Is fiber optic

Correct Answer: Should be held at a millimeter distance from the restoration ✔

Option A: Toluidine

Option B: Quaternary ammonium compound

Option C: Benzoyl peroxide

Option D: Tertiary amine

Correct Answer: Tertiary amine ✔

Option A: Amalgam alloy

Option B: Unfilled resin

Option C: Composite resin

Option D: Direct filling gold

Correct Answer: Unfilled resin ✔

Option A: 1925

Option B: 1937

Option C: 1951

Option D: 1956

Correct Answer: 1937 ✔

Option A: Increased thermal conductivity

Option B: Decreased wear resistance

Option C: Decreased thermal conductivity

Option D: None of the above

Correct Answer: Decreased wear resistance ✔

Option A: 3% to 5%

Option B: 8% to 10%

Option C: 0.2% to 0.5%

Option D: 0.6% to 0.8%

Correct Answer: 0.2% to 0.5% ✔

Option A: Increases vertical dimension

Option B: Causes teeth to be shrunken in investment

Option C: Causes poor quality of colour

Option D: Causes fracture of denture

Correct Answer: Increases vertical dimension ✔

Option A: Increasing the mechanical strength

Option B: Decreasing the coefficient of thermal expansion

Option C: Reducing the polymerization shrinkage

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Polymerization shrinkage is greater if bonded surface area is lesser than unbounded surface area

Option B: Polymerization shrinkage is high if within the enamel margins

Option C: Acid etching and priming will decrease polymerization shrinkage

Option D: Microleakage can occur because of polymerization shrinkage

Correct Answer: Polymerization shrinkage is greater if bonded surface area is lesser than unbounded surface area ✔

Option A: It can be finished smoothly

Option B: It has a low degree of flow

Option C: It’s non-irritation to pulp

Option D: It’s wear resistant is high

Correct Answer: It can be finished smoothly ✔

Option A: Only Hydrophobic component

Option B: Only Hydrophilic component

Option C: Hydrophobic and hydrophilic component

Option D: Lyophillic and lyophobic component

Correct Answer: Hydrophobic and hydrophilic component ✔

Option A: TEGDMA

Option B: BIS-GMA

Option C: Ti02

Option D: None of the above

Correct Answer: Ti02 ✔

Option A: Cold water

Option B: Hot water

Option C: Under pressure

Option D: In vaccum

Correct Answer: Hot water ✔

Option A: 30 seconds

Option B: 60 seconds

Option C: 90 seconds

Option D: 120 seconds

Correct Answer: 30 seconds ✔

Option A: Compression moulding technique

Option B: Injection moulding technique

Option C: Fluid resin technique

Option D: Light cured technique

Correct Answer: Injection moulding technique ✔

Option A: Adhesion of resin particles

Option B: Bonding between filler crystals

Option C: Bonding between filler and resin

Option D: Bonding between tooth and resin

Correct Answer: Bonding between tooth and resin ✔

Option A: BIS GMA

Option B: Polymethyl methacrylate

Option C: Benzoin methyl ether

Option D: Silica filter

Correct Answer: BIS GMA ✔

Option A: porosity

Option B: Shrinkage

Option C: Tooth breakage

Option D: Water absorption

Correct Answer: Shrinkage ✔

Option A: Silica glass

Option B: Organic matrix

Option C: Barium glass and strontium glasses

Option D: Fluoride particles

Correct Answer: Barium glass and strontium glasses ✔

Option A: Melts at 100°C

Option B: Softens at 100°C

Option C: Still requires heat for polymerization

Option D: Produces heat during polymerization

Correct Answer: Produces heat during polymerization ✔

Option A: Thermal polymerization of acrylic

Option B: Chemical polymerization

Option C: Retarding the polymerization reaction

Option D: To inhibit the action of benzoyl peroxide

Correct Answer: Chemical polymerization ✔

1. Hard thick central area
2. Thin Palatal area
3. Thin area of flanges
4. Porosity is uniformly distributed

Correct Answer: 1. Hard thick central area ✔

Option A: The former have a lower molecular weight

Option B: The former have higher residual monomer content

Option C: The former are more porous

Option D: The former have greater transverse strength

Correct Answer: The former have greater transverse strength ✔

Option A: Young’s modulus

Option B: Plastic strain

Option C: Elastic strain

Option D: Flexural strain

Correct Answer: Elastic strain ✔

Option A: Slicate cement

Option B: Composite

Option C: GIC

Option D: Polycarboxylate

Correct Answer: GIC ✔

Option A: Primary forces

Option B: Secondary forces

Option C: Cohesive forces

Option D: Ionic forces

Correct Answer: Cohesive forces ✔

Option A: Reflector

Option B: Translucent

Option C: Transparent

Option D: Opaque

Correct Answer: Transparent ✔

Option A: Complete wetting of surfaces

Option B: Rough surfaces between Adhesive & Adherent

Option C: Adherent and Adhesive molecules are tangent to each other

Option D: Irregularities present between Adherent surfaces

Correct Answer: Complete wetting of surfaces ✔

Option A: Ductile materials

Option B: Flexible materials

Option C: Brittle materials

Option D: Malleable materials

Correct Answer: Brittle materials ✔

Option A: Liquid should wet solid surface

Option B: Mechanical interlocking should be present

Option C: Should have high contact angle

Option D: None of the above

Correct Answer: Liquid should wet solid surface ✔

Option A: Solid solution

Option B: Eutectic mixture

Option C: Peritectic mixture

Option D: Inter metallic compounds

Correct Answer: Solid solution ✔

Option A: Grain

Option B: Nucleus

Option C: Stroma

Option D: None of the above

Correct Answer: Grain ✔

Option A: Define and measure colour qualitatively

Option B: Define and measure physical properties of gold alloys

Option C: Evaluate brittleness of different alloys

Option D: Measures different colours quantitatively

Correct Answer: Measures different colours quantitatively ✔

Option A: Inter atomic movement

Option B: Inter atomic imbalance

Option C: Arrangement of atoms

Option D: Arrangement of molecules

Correct Answer: Arrangement of atoms ✔

Option A: Resilience

Option B: Maximum flexibility

Option C: Toughness

Option D: Elastic limit

Correct Answer: Maximum flexibility ✔

Option A: Thixotropic

Option B: Pseudoplastic

Option C: Dilatant

Option D: Newton

Correct Answer: Dilatant ✔

Option A: Greater ductility

Option B: Greater toughness

Option C: A higher modulus of elasticity

Option D: A higher modulus of elasticity

Correct Answer: More resistance to permanent deformation ✔

Option A: Dentin

Option B: Enamel

Option C: Amalgam

Option D: Composite Resin

Correct Answer: Enamel ✔

Option A: Surface energy of the adherent

Option B: Surface texture of the adherent

Option C: Surface tension of the adherent

Option D: Nature of the adherent that is crystalline or amorphous

Correct Answer: Surface energy of the adherent ✔

Option A: Gold inlay

Option B: Acrylic resin

Option C: Silicate cement

Option D: Gold foil

Correct Answer: Silicate cement ✔

Option A: Proportional limit

Option B: Modulus of elasticity

Option C: Ultimate tensile strength

Option D: Flow

Correct Answer: Modulus of elasticity ✔

Option A: Grain elongation

Option B: Anealing

Option C: Cold working

Option D: Work hardening

Correct Answer: Grain elongation ✔

Option A: Solid directly to gas

Option B: Gas to liquid and then to soild

Option C: Gas directly to liquid

Option D: Solid to liquid and then to gas

Correct Answer: Solid directly to gas ✔

Option A: Rigidity or stiffness of the material

Option B: Ability to be stretched with permanent deformation

Option C: Ductility of a material

Option D: Malleability of the metal

Correct Answer: Rigidity or stiffness of the material ✔

Option A: 90°

Option B: 0°

Option C: 0 – 90°

Option D: >90°

Correct Answer: 0° ✔

Option A: Tensile strength

Option B: Elongation

Option C: Modulus of elasticity

Option D: Modulus of resilience

Correct Answer: Tensile strength ✔

Option A: KNH

Option B: VHN

Option C: RHN

Option D: BHN

Correct Answer: KNH ✔

Option A: The elastic limit

Option B: The proportional limit

Option C: The yield strength

Option D: Modulus of elasticity

Correct Answer: The proportional limit ✔

Option A: The stress at the proportional limit

Option B: The strain at the proportional limit

Option C: The stress/strain ratio within the proportional limit

Option D: None of the above

Correct Answer: The stress/strain ratio within the proportional limit ✔

Option A: An applied load or force

Option B: A deformation resulting from an applied load

Option C: An external force opposing an applied load

Option D: An internal force opposing an applied load

Correct Answer: A deformation resulting from an applied load ✔

Option A: High adherend wetting

Option B: High contact angle

Option C: Low contact angle

Option D: High flow

Correct Answer: High contact angle ✔

Option A: Spherical indenter

Option B: Steel ball indentation

Option C: Rhomboid shaped indenter

Option D: 136-degree diamond pyramid

Correct Answer: 136-degree diamond pyramid ✔

Option A: Solid solution

Option B: Eutectic alloy

Option C: Peritectic allowy

Option D: Ternary alloy

Correct Answer: Solid solution ✔

Option A: Ductility

Option B: Brittleness

Option C: Malleability

Option D: Resilient

Correct Answer: Brittleness ✔

Option A: Elastic Behaviour

Option B: Plastic Behaviour

Option C: Viscoelastic Behaviour

Option D: All of the above

Correct Answer: Viscoelastic Behaviour ✔

Option A: 90

Option B: 343

Option C: 67

Option D: 450

Correct Answer: 90 ✔

Option A: 1063° centigrade

Option B: 960° Centigrade

Option C: 850° Centrigrade

Option D: 1123° Centrigrade

Correct Answer: 960° Centigrade ✔

Option A: Graphite

Option B: Carbon

Option C: Acrylic

Option D: Porcelain

Correct Answer: Graphite ✔

Option A: Removal of smear layer

Option B: Exposure of collagen fibers

Option C: Opening of dentinal tubules

Option D: Increases surface energy

Correct Answer: Increases surface energy ✔

Option A: 50 – 60 KHN

Option B: 25 – 35 KHN

Option C: 15 – 20 KHN

Option D: 40 – 48 KHN

Correct Answer: B. 25 – 35 KHN ✔

Option A: Toughness

Option B: Brittleness

Option C: Young’s modulus

Option D: Proportional limit

Correct Answer: Toughness ✔

Option A: Pure gold

Option B: Amalgam

Option C: Prcelain

Option D: Composite

Correct Answer: Prcelain ✔

Option A: Fracture of the wire

Option B: permanent deformation

Option C: Spring back

Option D: Increase in stiffness

Correct Answer: Spring back ✔

Option A: Viscoelastic

Option B: Pseudoplastic

Option C: Plastic

Option D: Newtonian

Correct Answer: Newtonian ✔

Option A: Brinnel

Option B: Knoop

Option C: Shore-A

Option D: Rockwell

Correct Answer: Knoop ✔

Option A: Creep

Option B: Resillience

Option C: Elastic limit

Option D: Ultimate strength

Correct Answer: Creep ✔

Option A: Continued change of the material under a given load

Option B: The consistency of material when mixing

Option C: The homogencity of gypsum products

Option D: Dimensional change of the material during settings

Correct Answer: Continued change of the material under a given load ✔

Option A: Compressive strength

Option B: Tensile strength

Option C: Young’s modulus

Option D: Modulus of elasticity

Correct Answer: Compressive strength ✔

Option A: Resilience

Option B: Elastic limit / Elastic strain

Option C: Hardness

Option D: Fatigue resistance

Correct Answer: Elastic limit / Elastic strain ✔

Option A: Vickers’s hardness number

Option B: Knoop hardness number

Option C: Brinell hardness number

Option D: Rockwell hardness number

Correct Answer: Brinell hardness number ✔

Option A: Hardness

Option B: Yield strength

Option C: Modulus of elasticity

Option D: None of the above

Correct Answer: Hardness ✔

Option A: Stress before rupture

Option B: Stress after rupture

Option C: Longitudinal compressive strength

Option D: Horizontal compressive strength

Correct Answer: Stress before rupture ✔

Option A: Brittleness

Option B: Resilience

Option C: Tensile strength

Option D: Toughness

Correct Answer: Resilience ✔

Option A: Proportional limit

Option B: Tensile strength

Option C: Ultimate strength

Option D: Yield strength

Correct Answer: Yield strength ✔

Option A: Area of the test specimen upon which the weight rests

Option B: Elasticity of the test specimen in strain

Option C: Length of the test specimen beneath the force

Option D: Strain of the test specimen per unit length

Correct Answer: Area of the test specimen upon which the weight rests ✔

Option A: The maximum stress in a structure

Option B: The minimum force required to cause a structure to break

Option C: The maximum stress that can be induced without permanent deformation

Option D: The maximum elongation under tension that can be measured before failure

Correct Answer: The maximum stress that can be induced without permanent deformation ✔

Option A: An applied load or force

Option B: A deformation resulting from an applied load

Option C: An external force opposing an applied load

Option D: An internal force opposing an applied load

Correct Answer: An internal force opposing an applied load ✔

Option A: Casts

Option B: Models

Option C: Investment

Option D: Dies

Correct Answer: Investment ✔

Option A: Using asbestos linear

Option B: Placing the sprue at least one quarter inch away form the end of casting ring

Option C: Preventing rapid heating the investment in burnout oven

Option D: Using a short and wide sprue

Correct Answer: Placing the sprue at least one quarter inch away form the end of casting ring ✔

Option A: Reducing flame

Option B: Oxidizing flame

Option C: Green flame

Option D: All of the above

Correct Answer: Reducing flame ✔

Option A: Warm HCI

Option B: Cold HF

Option C: Cold H2SO4

Option D: Sand blasting with aluminium oxide

Correct Answer: Sand blasting with aluminium oxide ✔

Option A: a titanium

Option B: B titanium

Option C: Chrome-cobalt-nickel

Option D: Nickel-titanium

Correct Answer: Nickel-titanium ✔