What fraction of inhaled mercury vapors retained in the body ?

Related Mcqs:

1. Absorption of mercury in the human body occurs least from_____________?

   A. Lungs
   B. Gastro-intestinal Track
   C. Skin
   D. Kidneys

2. The largest fraction of the total body fluid is_______________?

   A. Extracellular fluid
   B. Intracellular fluid
   C. Plasma
   D. Whole blood

3. The teeth that are retained for the longest period of time are__________________?

   A. Maxillary incisors
   B. Maxillary canines
   C. Mandibular incisors
   D. Mandibular canines
   E. B & D

4. Increase in the residual mercury in silver amalgam filling can_____________?

   A. Cause fracture of the filling
   B. Tarnish and corrosion
   C. Increase the strength
   D. Decrease condensation pressure

5. Chronic mercury toxicity results from_____________?

   A. Ingestion while removing old amalgam
   B. Skin contact
   C. Mercury vapour
   D. All of the above

6. Which phase provides maximum strength in hardened mercury/silver alloy ?

   A. Silver / Mercury phase
   B. Silver / Tin phase
   C. Tin / Mercury phase
   D. Zinc / Mercury phase

7. Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?

   A. Accelerated corrosion
   B. Fracture of the restoration
   C. Merginal damage
   D. All of the above

8. Advantage of minimum mercury technique or Eames technique is all Except________________?

   A. High strength
   B. Sets quickly
   C. Needs no squeezing of excess mercury
   D. Greater plasticity and adapts well to cavity walls

9. Adequate mixing of mercury is indicated by_______________?

   A. Dry Mix
   B. Shiny Mix
   C. Short Mixing Time
   D. None of the above

10. Mercury is toxic because it_____________?

    A. Complexes with hemoglobinto form methemoglobin
    B. Inhibits hemoglobin synthesis, producing anemia
    C. Inhibits anaerobic glycolysis
    D. Binds to sulfhydryl groups