All India Institute of Medical Sciences 2009 SOLVED S 2007 - Question Paper

A. It can extend upto a depth of 100-500 microns.
B. reduces if tin content of alloy reduces.
C. Is promoted by gamma phase of alloy particles.
D. Is resisted most by cooper-tin phase in high copper amalgam.

16. ans is: A- It can extend upto a depth of 100-500 microns.
(Ref: Craig-10th Ed/Pg 222; Sturdevant 4th/ Pg 154) Repeat AIPG-06.

17. Over-trituration of silver & mercury causes:
A. Reduction in contraction.
B. Increases strength in lathe cut but decreases strength in spherical alloy.
C. provide a dull & crumbly amalgam mix.
D. reduces the creep.

17. ans is: B- Increases the strength of lathe-cut alloy but decreases the strength of spherical alloy amalgam.
(Ref: Craig 10th/226, 227) Repeat AIPG-06

18. Poisson’s ratio is:
A. Lateral strain by axial strain within elastic limit.
B. Equal to flexural strength.
C. Is more in amalgam.
D. Is low for gold alloy.

18. ans is: A- Lateral strain by axial strain within elastic limit.
(Ref. Craig tenth Ed / 66, Skinner eleventh Ed / 85)

19. Strain is:
A. New length upon original length after a load is applied.
B. Original length upon new length after a load is applied.
C. Force applied to change the length.
D. Difference ranging from the 2 lengths upon original length.

19. ans is: D- Difference ranging from the 2 lengths upon original length.
(Ref: Skinner eleventh / 73 & 74; Craig tenth / 66)

MICROBIOLOGY

20. Most commonly used selective medium for Streptococcus mutans is:
A. MacConkey’s medium.
B. Mitis-Salivarius-Bacitracin agar.
C. Nutrient agar.
D. Tellurite medium

20. ans is: B- Mitis salivarius bacitracin agar.
(Ref: Soben Peter second / 375) Repeat AIPG-06

PATHOLOGY

21. All of the subsequent is actual about Cerebral edema except:
A. Can outcome in herniation of the brain from foramen magnum.
B. outcomes from increased lymphatic drainage.
C. outcomes in an increase in intracranial pressure.
D. Can outcome from an increase in plasma protein concentration.

21. ans is: B- outcomes from increased lymphatic drainage.

Earning:   Approval pending.