491.Most common site for CSF Rhinorrhea

a.Ethmoidal sinus
b.Frontal sinus
c.Petrous bone
d.Cribriform plate

Ans-d.Cribriform plate

The Cribriform plate and air cells of the ethmoid sinus account for the maximum no of leaks

475. Within the RBC, hypoxia stimulates glycolysis by which of the following regulatory pathwayse

a.      Hypoxia stimulates pyruvate dehydrogenase by increased 2,3-DPG

b.      Hypoxia inhibits hexokinase

c.      Hypoxia stimulates release of all glycolytic enzymes from Band -3 on RBC membrane

d.      Activation of the regulatory enzymes by high PH

472.All are true about propofol except

a.Induction and maintenance of anaesthesia
b.Induces vomitting
c.Causes sedation
d.Rapid recovery

Ans-b.Induces vomiting

449.If rate of loading is decreased,the mechanical properties of the material

a.Increases
b.Decreases
c.Constant
d.Become unpredictable

Ans-b.Decreases  Ref Sturdevant 4th ed pg 142

441.Which of the following intravenous induction agent is the most suitable for day care surgery

a.Morphine
b. Ketamine
c.Propofol
d.Diazepam

Ans-Propofol

259.Death due to injury in second peak is due to

a.High spinal cord injury
b.Aortal rupture
c.Epidural and subdural hematoma
d.Sepsis

Ans-c.Epidural and subdural hematoma

ref peterson 2nd ed pg 327
death from trauma has a trimodal distribution
first peak
death within seconds or minutes of injury due to laceration of brain,spinal cord or aorta .
second peak
death within first few hours after injury due to nervous system injury or hemmorhage
third peak
death occurd days or weeks after injury due to sepsis,multiple organ failure

258.In a patient with poor neuromuscular control presents with occlusal prematurities.they can be corrected

a.Occlusion is corrected by direct method
b.Interocclusal record is made and transferred to articulator
c.Patient is asked to chew on carborandum paste
d.No need to estabilish occlusion


Ans-b.Interocclusal record is made and transferred to articulator
ref winkler pg 328

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• Total of 14000 MCQ’s
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FOR MORE IN DENTISTRY: VISIT RxDENTISTRY LOVEHUES DENTAL MATRIX

237.The blood brain barrier is present in all except

a.Postrema area
b.Subfornical organ
c.Neurohypophysis
d.Habernacular trigone

Ans-d.Habernacular trigone


Explanation:Refer ganong's physiology 22ed pg 615
Remember SONA OR SOAP Subfornical organ
Organum vasculosum
area postrema
posterior pituitary/neurohypophsis

230.A person working in a abattior presented with pustules on hand which turned into ulcer,which will best help in diagnosis?

a.Trichome methylene blue
b.Carbol fuschin
c.Acid fast stain
d.Calcoflour white

Ans-a.Trichome methylene blue


Explanation:Ref harrison 16th ed pg 1280

229.Drug of choice to treat hypertension during pregnancy

a.Diuretics
b.Enalapril
c.Reserpine
d.Methyldopa

Ans-d.Methyldopa

Explanation:Ref K.D Tripathi 5th ed pg 517

216.The minimum depth of a detectable carious lesion on a radiograph is

a.500 micrometer
b.1000 micrometer
c.5000 micrometer
d.8000 micrometer

Ans:a.500 micrometer

Explanation:Ref sturdevant 4th ed pg102

215.The greatest concentration of phosphate in tooth is in the

a.Pulp
b.Enamel
c.Dentin
d.Cementum

Ans:b.Enamel