Dental Materials MCQs

Page No. 23

The function of 2% potassium sulphate in a gypsum product is_____________?


aTo regulate the setting expansion


bRegulate setting time


cActs as retarder


dNone


View Answer Regulate setting time

The strength of gypsum prouducts is generally expressed in terms of______________?


aTensile strength


bWet strength


cGreen strength


dcompressive strength


View Answer compressive strength

The product, which is obtained by calcining gypsum under steam pressure at 120-130°C or by dehydrating gypsum in the presence of sodium succinate is_______________?


aAlpha – hemihydrates


bBeta – hemihydrates


cCalcium sulphate dihydrate


dOrthorhombic anhydrate



Type III Dental gypsum is__________________?


aClass II stone


bDensite


cClass I stone or hydrocal


dModel or lab plaster



Beta hemihydrate particles absorb______________?


aMore water


bLess water


cNo water


dNone of the above


View Answer More water

Powders of dental plaster and dental stone differ mainly in____________?


aSolubility


bShelf life


cChemical formula


dParticle porosity


View Answer Particle porosity

Impression plaster containing potato starch is called______________?


aAnti – expansion solution


bSoluble plaster


cDie stones


dPlaster of Paris


View Answer Soluble plaster

Balanced stone is dental stone_______________?


aWhich undergoes rapid expansion


bIn which accelerators or retarders have been added according to need


cIn which amount of water of hydration is controlled


dIn which the crystals are all of uniform size



The strength of the gypsum specimen when the water in excess of that required for the hydrate of the hemihydrate is left in the specimen is called____________?


aDry strength


bGreen strength


cWater strength


dCompressive strength


View Answer Green strength

Gypsum is used for________________?


aImpressions


bCasts


cDies


dCasts and Dies


View Answer Casts and Dies

Goto Page No.

Page 23 of 62

Alphabetical MCQs Categories

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan