Description : Porosity in acrylic dentures is caused by, A. Contraction porosity in thickest point of the denture B. Insufficient pressure during flasking
Last Answer : A. Contraction porosity in thickest point of the denture B. Insufficient pressure during flasking
Description : The contraction (Gaseous) porosity in inlays is related to:** A. Overheating of the alloy B. Molten gases C. Diameter of the sprue D. Overheating of investment
Last Answer : B. Molten gases
Description : What is true about partial dentures, A. They cause immediate changes in the oral plaque behaviour B. Night wearing of dentures reduces plaque accumulation C. Relieving the gingival area reduces the gingival enlargement.
Last Answer : A. They cause immediate changes in the oral plaque behaviour
Description : The volume shrinkage of methyl metacrylate monomer when polymerized is:** A. 12% B. 15% C. 18% D. 21%
Last Answer : D. 21%
Description : What is the advantage of composite over silicate resin: A. Less shrinkage B. Less surface erosion C. Less water absorption D. All of the above
Last Answer : D. All of the above
Description : The effect of the temperature rising above 100ºC on heat-cured denture-base acrylic resins is: A. Produces porosity on the external portion of the resin. B. Produces porosity on the internal portion ... porosity on the surface of the resin. D. Prevents porosity on the interior of the resin
Last Answer : B. Produces porosity on the internal portion of the resin.
Description : The advantage of firing porcelain in vacuum:** A. Reduces size of air-bubbles incorporated thus decreasing porosity B. Removes water before firing, increasing the hardness of porcelain C. Significantly lowers firing temperature
Last Answer : A. Reduces size of air-bubbles incorporated thus decreasing porosity
Description : The most common cause of porosity in porcelain jacket crowns is, A. Moisture contamination B. Excessive firing temperature C. Failure to anneal the platinum matrix D. Excessive condensation of the porcelain E. Inadequate condensation of the porcelain
Last Answer : E. Inadequate condensation of the porcelain
Description : If the investment is burned out rapidly, what will happen: A. Back pressure porosity B. Cracking of the investment
Last Answer : B. Cracking of the investment
Description : Rough surface/Porosity of porcelain is a result of: A. Lack of compression/ condensation B. Sudden high temperature
Last Answer : A. Lack of compression/ condensation
Description : In removable partial dentures, the principle of an indirect retainer is that it: a. Stabilises against lateral movement b. Prevents settling of major connectors c. Restricts tissue movement at ... base of the partial denture. d. Minimises movement of the base away from the supporting tissue
Last Answer : d. Minimises movement of the base away from the supporting tissue
Description : In the construction of partial dentures the surveyor is not used to, A. Contour the wax as part of the fabrication of the working cast B. Locate the guide planes C. Determine the location of indirect retainers D. Identify any undesirable undercuts
Last Answer : A. Contour the wax as part of the fabrication of the working cast
Description : If aesthetic is not a concern what is the first thing to do to treat soreness under dentures, A. Take the denture off for a week B. Rinse the denture in nystatin C. Apply tissue conditioner
Last Answer : A. Take the denture off for a week
Description : When patient bites in protrusion with complete dentures you notice that the posterior teeth do not meet, what would you do to solve this: A. Increase the compensatory curve B. Decrease the angle of the occlusal plane
Last Answer : A. Increase the compensatory curve
Description : When setting up teeth for complete dentures having bilateral balanced occlusion, separation of posterior teeth during protrusion is done by: A. Increasing the anterior posterior occlusal curve B. Decreasing the angle orientation of the occlusal plane
Last Answer : B. Decreasing the angle orientation of the occlusal plane
Description : It is desirable for major connectors of upper partial dentures to:** A. Be at least 5 mm away from the gingival margin B. Cover the anterior palate
Last Answer : A. Be at least 5 mm away from the gingival margin
Description : In complete dentures, cheek biting is most likely a result of: A. Reduced Overjet of posterior teeth B. Increased vertical dimension C. Teeth have large cusp inclines
Last Answer : A. Reduced Overjet of posterior teeth
Description : Which of the following liquids is not suitable for prolonged immersion of cobalt chrome partial dentures: A. Alkaline peroxidase B. Hypochlorite solutions C. Soap solutions D. Water
Last Answer : B. Hypochlorite solutions
Description : What is the relationship of the retentive portion of the partial dentures retainers to the survey line of abutment: A. Gingival /Below/ B. Occlusal /Above/ C. No relation
Last Answer : A. Gingival /Below/
Description : In partial dentures the guidelines “Guiding Planes” serve to: A. Aid in balancing occlusion B. Assure predictable clasp retention C. Form right angle with the occlusal plane D. Eliminate the necessity for precision attachment E. Eliminate the necessity for a posterior clasp
Last Answer : B. Assure predictable clasp retention
Description : What is the thickest book you ever read in your life?
Last Answer : Dan Brown’s The Lost Symbol. I went through it pretty quick in about a week or so. I was kinda disappointed in the very end.
Description : At what stage of mitosis division do the chromosomes become the shortest and thickest ?
Last Answer : In the metaphase stage of mitosis division, the chromosomes become the shortest and thickest.
Description : Which of the following have thickest wall `:-`
Last Answer : Which of the following have thickest wall `:-` A. Right auricle B. Left auricle and left ... higher vertebrates C. Right ventricle D. Left ventricle
Description : The largest and the thickest heart chamber is
Last Answer : The largest and the thickest heart chamber is A. Left ventricle B. Left atrium C. Right atrium D. Right ventricle
Description : Which has the thickest walls `:-`
Last Answer : Which has the thickest walls `:-` A. Right auricle B. Left auricle and left ventricle in higher vertebrates C. Right ventricles D. Left ventricle
Last Answer : Which has the thickest walls `:-` A. Righ auricle B. Left auricle C. Right ventricles D. Left ventricle
Description : What is the thickest part of the Earth's crust?
Last Answer : The thickest part of the crust is found under the highest elevated mountain ranges on the continents.
Description : The tallest and thickest type of grass is (1) Alfalfa (2) Fodder (3) Bamboo (4) Lichens
Last Answer : (3) Bamboo Explanation: The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in ... in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species.
Description : What is the thickest layer of the ionosphere? A. E B. F1 C. F2 D. D
Last Answer : C. F2
Description : Animal having the thickest skin?
Last Answer : The whale shark
Description : There are three bulbs of 60W 100W and 200W which bulb has thickest filament. a. 100W b. 200W c. 60W d. All
Last Answer : b. 200W
Last Answer : Bamboo
Description : Shrinkage of protoplasm due to outward flow of water (exosmosis) in a concentrate solution.
Last Answer : Ans. Plasmolysis
Description : Which of the following is an example of fraudulent financial reporting? a. The treasurer diverts customer payments to his personal due, concealing hisactions by debiting an expense account, thus ... the company and neglects to return them; the cost is reported as a miscellaneous operating expense
Last Answer : Company management changes inventory count tags and overstates ending inventory, while understating cost of goods sold
Description : After pre-stressing process is completed, a loss of stress is due to (A) Shrinkage of concrete (B) Elastic shortening of concrete (C) Creep of concrete (D) All the above
Last Answer : Answer: Option D
Description : A pre-stressed concrete member is preferred because (A) Its dimensions are not decided from the diagonal tensile stress (B) Large size of long beams carrying large shear force need not be adopted (C) Removal of cracks in the members due to shrinkage (D) All the above
Description : The function of an expansion joint in rigid pavements is to (A) Relieve warping stresses (B) Relieve shrinkage stresses (C) Resist stresses due to expansion (D) Allow free expansion
Description : Which of the following losses of pre-stress occurs only in pre-tensioning and not in posttensioning? (A) Elastic shortening of concrete (B) Shrinkage of concrete (C) Creep of concrete (D) Loss due to friction
Last Answer : Answer: Option A
Description : Pick up the correct statement from the following: (A) Sand stones may be divided into calcareous, siliceous and ferruginous sand stones (B) Concrete using sand stones, cracks due to excessive shrinkage (C) Broken bricks produce a concrete having good fire resisting qualities (D) All the above
Description : Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to (A) Deflect downward (B) Deflect upward (C) Deflect downward or upward (D) None of the above
Description : Which one of the following statements is not correct with respect to PSC beams? (a) Loss due to shrinkage is proportional to water-cement ratio used in concrete (b) Loss due to creep is ... to the modulus of elasticity of concrete (d) Loss due to friction occurs in post tensioned concrete members
Last Answer : (c) Loss due to elastic deformation is directly proportionally to the modulus of elasticity of concrete
Description : Minimum shear reinforcement is necessary to [ A ] Prevent brittle shear failure [ B ] Prevent failure due to shrinkage and thermal stresses [ C ] Hold the reinforcements in place while pouring concrete [ D ] All the above.
Last Answer : [ D ] All the above.
Description : Pick up the correct statement from the following: (A) The ratio of total volume of voids in soil aggregates to the total volume of aggregate, is called Porosity (B) Water retained by the interstices ... (C) Sum of the percentage of specific yield and specific retention is 100 (D) All the above
Description : The property of a soil due to which water percolates through it is known as a) Porosity b) Permeability* c) Moisture content d) Capillarit
Last Answer : b) Permeability*
Description : Is there any place or organization in my area that helps with cost of full dentures for elderly?
Last Answer : You can try your local medicaid offices in the Manchester area since they would be able to provide a better organization.
Description : Helium-mercury method is used for the measurement of the __________ of the catalyst. (A) Surface area (B) Porosity (C) Pore volume (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst (A) Porosity is very important (B) Porosity is of less importance (C) Internal surface area is utilised efficiently (D) None of these
Last Answer : (B) Porosity is of less importance
Description : Promoter is added to the catalyst to improve its (A) Porosity (B) Sensitivity (C) Surface area (D) None of these
Last Answer : (B) Sensitivity
Description : Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates ... (except the first one) is involved in each of the evaporation process (D) None of these
Last Answer : (B) There is no dynamic equilibrium between successive layer