493.In a study in UK ,an association was found between sale of antiarryhthmic drug and an increase in death due to asthma .This is an example of

a.Ecological study
b.Cohort study
c.Case reference study
d.Experimental study
Ans-a.Ecological study

485. Thiamine deficiency causes decreased energy production because

 a) It is required for the process of transamination.
 b) It is co-factor in oxidative reduction .
c)It is co-enzyme for transketolase in pentose phosphate pathway .
d) It is co-enzyme for pyruvate dehydrogenase.

Ans-d) It is co-enzyme for pyruvate dehydrogenase.

466.Keratocanthoma most commonly occurs on

a.Lips
b.Buccal mocosa
c.Gingiva
d.Palate

Ans-a.Lips

376.The difference in color of subgingival and supragingival calculus is due to

a.ph of saliva
b.death of leucocytes
c.hemolysis of erythocytes
d.none


Ans-c.hemolysis of erythrocytes

234.All of the following muscles are composite muscles except

a.Pectineus
b.Rectus femoris
c.Adductor magnus
d.Biceps femoris

Ans-b.Rectus femoris

Explanation:BDC II /4th ed pg 64/Gray's 39 ed /1467,1469

233.Tributary of the cavernous sinus includes all of the following,except:

a.Superior petrosal sinus
b.Inferior petrosal sinus
c.Superfficial middle cerebral vein
d.Deep middle cerebral vein


Ans-a.Deep middle cerebral vein

Ref BDC III/4th ed /pg 94

232.In mass casuality,patients treated first are

a.Patients with life threatening injuries
b.Patients with maximum chances of survival with minimum available resource
c.Treating patients with multiple organ failure&that need equipment and mobility
d.All patients are treated equally


Ans-b.Patients with maximum chances of survival with minimum available resources


Explanation:Trauma by Moore 4th ed pg 83

231.When a case is transferred to ICU ,mandibular fractures are evaluated in

a.Primary survey
b.Secondary survey
c.Primary survey with IMF
d.Away from resusciation room


Ans-a.Primary survey


Explanation.Ref Fonseca vol 3rd pg 1-2,Peter ward booth pg 31,34

228.Which of the following increases turbulence in blood flow?

a.Reynold's number less than 2000.
b.Decrease in the velocity of the blood.
c.Decrease in density of the blood.
d.Increase in the diameter of blood vessel.

Ans-d.Increase in the diameter of blood vessel.

Explanation-Ref ganong22/ed pg 583
reynold's no=density *diameter*velocity/viscosity

(131-140) 131. Reconstructing the occlusal anatomy is based on

A. Functional factors
B. Depth of restoration on a tooth
C. Necessity to restore normal anatomy

132. How do you prepare floor of pulp chamber in molars
A. Swab and dry with cotton wool and excavate
B. Use round bur to flatten the floor
C. Under cut walls
D. Use flat end fissure bur to make it levelled

133. When do you finish campsite resin restorations
A. Immediately after curing
B. After 24 hours
C. A week after placement

134. Where Café au lait spots are seen
A. Von Willebrand’s disease
B. Recklinghausen
C. Neurofibroma

135. Von Willebrand disease is
A. Haemophilic disease
B. Bacterial Endocarditis
C. Congenital cardiac disease
D. Rheumatic fever

136. What technique is used in the extraction of permanent 1st
molars
A. Rotation movement
B. Lingual movement
C. Buccal movement

137. Drugs contraindicated with Monoaminoxidas MAO

A. Barbiturates
B. Pethidine
C. Local Anaesthesia with felypressin
D. Narcotic analgetics
E. Salicylic acid

138. Blow to mandible causing fracture in molar’s right side
region, you expect a second fracture of
A. Sub condylar of right side
B. Sub-condylar of left side
C. Fracture of symphysis

139. What is the most common fracture of Class II amalgam
restorations
A. Isthmus because of insufficient depth
B. Internal fracture
C. Marginal ridge site

140. 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

56.Lysis of fibrin is brought about by:

A. Plasmin B. Hyaluronidase
C. Collagenase D. Coagulase


Answer is: A- Plasmin. (Ref. K.D. Tripathi-5th )



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50.In a obese person, BMI is :

a)>10 b)>20
c)>30 d)>40


ANS: C


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49.Gingival fibers which run between two teeth are:

A) TRANSEPTAL B) TRANSGINGIVAL
C) OBLIQUE D) APICAL


ANS : A

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48. Dental floss is used for cleaning which type of embrasures :

a) Type 1 b) 2
c) 3 d) all


ANS: A


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