Etchant preferred in gel from than in liquid form________________?

Related Mcqs:

1. In reversible hydrocolloid the property by which the transformation from sol to gel and gel to sol is a function of the_____________?

   A. Concentration of filler and plasticizer
   B. Percentage composition by weight of water
   C. Concentration of potassium sulphate
   D. Temperature

2. Hysteresis in a hydrocolloid gel is______________?

   A. Moisture absorption
   B. Temperature lag between gelation and liquefaction temperature
   C. Phenomenon of conversion of gel into sol
   D. All of the above

3. Syneresis seen in hydrocolloid gel is______________?

   A. Seen as water loss
   B. Water absorption
   C. Shrinkage
   D. Gelation

4. Sol – gel transformation is seen in________________?

   A. Impression plaster
   B. Hydrocolloids
   C. Elastomer
   D. Impression compound

5. A 9 year old child’s mother comes to dental clinic with the complaint of oral ulceration, fever and shedding of skin of palms and soles: she is giving history of premature shedding of teeth and increased sweating she is also giving one month history of using any new teething gel available in market. The child is suffering form____________?

   A. Acrodynia
   B. Pemphigus vulgaris
   C. Epidermolysis Bullosa
   D. Erosive lichen planus

6. The preferred material for repair of fractured denture base is______________?

   A. Chemically cure resin
   B. Heat curve resin
   C. Light cure resin
   D. Vinyl resin

7. 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

8. Glutaraldehyde is preferred more than formaldehyde because______________?

   A. It has got more bactericidal activity
   B. It has got more bacteriostatic activity
   C. It has got no deleterious effect on the cement and lenses of instruments
   D. Its application is easier

9. A patient on warfarin sodium following myocardial infarction reports for an oral surgical procedure which one of the following laboratory tests should be preferred to ascertain the fitness_______________?

   A. Prothrombin time
   B. Tourniquet time
   C. Clotting time
   D. Bleeding time

10. A young man of 24 years is suffering from Generalized Anxiety Disorder; which drug may be preferred for his problem?

    A. Zolpidem
    B. Buspiron.
    C. Midazolam
    D. Triazolam
    E. Phenobarbital

    Submitted by: Dr.Tassawer-e-Meran