502.Wallenberg syndrome is due to the complete infarction of

a.Posterior inferior cerebellar artery
b.Anterior inferior cerebellar artery
c.posterior cerebral artery
d.spinal artery

Ans-a.Posterior inferior cerebellar artery

501.In Gypsum bonded investment,composition of alpha hemihydrate is

a.60-65%
b.30-35%
c.5-10%
d.85-90%

Ans-b.30-35%
Explanation-Composition of gypsum bonded investment is 
Silica-60-65%
Alpha hemihydrate-30-35%
Modifiers-5%

500.All of the following are tumour supressor genes except

a.WT -1
b.PTEN
c.NF-2
d.RAS

Ans-d.RAS

499.A diamond in the shape of square based pyramid is used in

a.Knoop hardness test
b.Vicker hardness test
c.Shore and Barcol test
d.Rock well hardness test

Ans-b.Vicker hardness test


498.Another name for infectious mononucleosis is

a.Pfeieffer disease
b.Kissing disease
c.Both a and b
d.None


Ans-C.Both a and b Refer shafers 5th ed pg 1065

497.All of the following are radiopaque lesions except

a.Ameloblastic Fibroma
b.Ameloblastic Fibroodontoma
c.Cementoblastoma
d.Odontoma



Ans-a.Ameloblastic Fibroma



496.Rain drop pigmentation of skin and mucosa is seen in

a.Arsenic poisoning
b.Bismuth poisoning
c.Lead poisoning
d.Mercury poisoning

Ans-a.Arsenic poisoning

494.Which of the following is not present in basal lamina

a.Rhodopsin
b.Entactin
c.Laminin
d.Integrin
Ans-a.Rhodopsin  Ref-Grays Anatomy 39 th ed /34-36

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



492.Hyponatremia with increased sodium body content is seen in

a.Diuretic administration
b.Tubular acidosis
c.Vomiting
d.Nephrotic syndrome


Ans-d.Nephrotic syndrome
Explanation-Hyponatremia with normal body sodium is almost exclusively associated with SIADH.Hyponatremia associated with increased total body sodium results from water retention in excess of sodium retention.The four clinical states where in this phenomenon is seen are congestive heart failure,cirrhosis,nephrotic syndrome and advanced renal failure.

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







490.Which of the following enzymes is purely mitochondrial

a.SGOT
b.SGPT
c.Gamma Glutamyl Transferase
d.5 Nucleotidase

Ans-a.SGOT
Explanation-SGOT has two isoenzymes
Inside the liver SGOT is localized mainly in the mitochondria with the remainder in the cytoplasm.











489.Which of the following syndrome is characterized by multiple large 'cold staphylococcal abscesses?

    1.Job's syndrome       
    2.Lazy leukocyte syndrome.      
    3.Chediak-higashi syndrome.    
   4.Wiskott Aldrich syndrome.           
ANS- Job's syndrome         
Reference : -  Ananthnarayan-157

488.The occurrence of hyperthyroidism following administration of supplemental iodine to subjects with endemic iodine deficiency goitre is known as:

  1.Jod-Basedow effect    
  2.Wolff-Chaikoff effect     
  3.Thyrotoxicosis factitia     
  4.De Quervain's thyroiditis

Ans-1. Jod-Basedow effect  
   
  Reference : - > Harrison-(15)-2077

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.

484. Reactive arthritis is caused by

 a) Staph. aureus
b) H. influenza
c) N. gonnorhea
d)  E.coli

Ans-c) N. gonnorhea

483. which drug does not metabolize by acetylation:

 a)Isoniazid
 b)Metaclopromide
 c)Procainamide
 d)Dapsone

Ans-b.Metoclopramide

482.Which of the following is a derivative of the second pharyngeal arch?

A. Eustachian tube
B. External auditory meatus
C. Palatine tonsil
D. Stylohyoid muscle
The correct answer is D. The stylohyoid is derived from the second pharyngeal arch, which also
gives rise to the muscles of facial expression, the stapedius, the posterior belly of the digastric
muscle, Reichert's cartilage, and the facial nerve.

481.During a cranial nerve test, the patient cannot elevate her right eye from the abducted position. Which of the following muscles is paralyzed?

A. Right inferior oblique
B. Right inferior rectus
C. Right lateral rectus
D. Right superior oblique
E. Right superior rectus
The correct answer is E. The superior rectus muscle can elevate and adduct the eye from the
neutral position. From the abducted position, it is the only muscle that can elevate the eye.
The inferior oblique muscle (choice A) can elevate and abduct the eye from the neutral position.
From the adducted position, it is the only muscle that can elevate the eye.
The inferior rectus muscle (choice B) can depress and adduct the eye from the neutral position. From
the abducted position, it is the only muscle that can depress the eye.
The lateral rectus muscle (choice C) can abduct the eye.
The superior oblique muscle (choice D) can depress and abduct the eye from the neutral position.
From the adducted position, it is the only muscle that can depress the eye

480.Hirschsprung's disease indicates a developmental abnormality in which of the following embryonic tissues?

 A. Ectoderm
B. Endoderm
C. Neural crest
D. Neural ectoderm

Ans-c.Neural crest

The baby has Hirschsprung's disease, which is due to an absence of
ganglion cells in the wall of the colon. Neural crest cells contribute to the formation of many adult
structures. Among these are all of the postganglionic neurons of the autonomic nervous system and
the sensory neurons of the peripheral nervous system.

479.At which of the following ages does fetal movement first occur?

A. 1 month
B. 2 months
C. 4 months
D. 6 months

Ans-B.2months
Neuromuscular development is sufficient to allow fetal movement in the
eighth week of life. Other features of Week 8 include the first appearance of a thin skin, a head as
large as the rest of the body, forward-looking eyes, appearance of digits on the hands and feet,
appearance of testes and ovaries (but not distinguishable external genitalia), and a crown-rump length
of approximately 30 mm. By the end of the eighth week, nearly all adult structures have at least begun
to develop, and the fetus "looks like a baby.

478 :Bleeding joints is a characteristic feature of:

  1. Vitamin C deficiency.
  2. Hemophilia.  
  3. Vitamin K deficiency. 
  4. Thrombocytopenia.

Ans-2.Hemophilia

477:Auspitz’s sign is seen in:

  A. Lupus erythematosus 
  B Pemphigold  
  C. Lichen planus 
  D. None of the above

   Ans-D.None of the above

476.Chemfill is

a.Compomer
b.Resin modified GIC
c.GIC
d.Composite

Ans-b.Resin modified GIC




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


474.Auditory centre for hearing lies in the

a.Precentral gyrus
b.Post central gyrus
c.Temporal lobe
d.Occipital lobe



Ans-c.Temporal lobe

Ref -BDC 4TH ED VOL III PG 351











473.Cranium development is started at the age of

a.11 days
b.21 days
c.31 days
d.41 days



Ans-b.21 days 







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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




471.Denaturation of double stranded DNA results in

a.It gets broken down to nucleotides.
b.It becomes single stranded reversibly.
c.Becomes single stranded iireversibly.
d.Becomes double stranded permanently.

Ans-b.It becomes single stranded reversibly.


470.All potentiate digoxin toxicity except

a.Hyperkalemia
b.Hypomagnesia
c.Hypercalcemia
d.Renal failure

Ans-a.Hyperkalemia
 Ref-Katzung pg 54-55   10th ed
Hyperkalemia is a protective factor as in the presence of hyperkalemia,the binding of digoxin becomes less



469.Substance P is released in response to pain in periphery

a.Nerve terminalis
b.Mast cells
c.Endothelium
d.Plasma

Ans-a.Nerve terminalis

Ref -Ganong's review of medical physiology 23 rd ed pg 112




468.The sulcular epethilium acts as a semipermeable membrane through which

a.Bacterial products pass into the gingiva.
b.Fluids from the gingiva seep into the sulcus.
c.Both of the above.
d.None of the above.


Ans-c. Both of the above
Ref-Caranza 9 th ed pg 23








467.Etiology of multiple neurofibromatosis is

a.Genetic
b.Viral
c.Injury
d.Endocrine


Ans-a.Genetic

Reference-Shafer's 5th ed pg 280










466.Keratocanthoma most commonly occurs on

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

Ans-a.Lips

465.Sarcoma of the soft tissues spread by

1.Blood vessels
2.Lymphatics
3.Direct invasion
4.Local infiltration

Ans-1.Blood vessels
 Ref -Shafer 4th ed pg 169 /5th ed pg 220




464.Induction effect is characterstic of which of the following conditions

a.Cementoblastoma
b.Ameloblastoma
c.Ameloblastic fibro-odontome
d.Odontogenic adenomatoid tumour

Ans-Ameloblastoma

463.The mucogingival line in the incisor and canine areas are located approximately

a.3mm apical to the crest of alveolar bone
b.10 mm apical to crest of alveolar bone
c.12 mm apical to crest of alveolar bone
d.12mm incisal to alveolar bone

Ans-3mm apical to the crest of alveolar bone

462.Advantages of Mcspaden technique are all except

a.economy of time
b.rapid filling of canals apically and laterally
c.ease of selection and treatment
d.can be used in narrow canals

Ans-d.can be used in narrow canals

461.Etiology of mongolism

a.trisomy 21
b.congenital syphillis
c.disomy 21
d.nutritional deficiency


Ans-a.trisomy 21

460.In T and Y bar clasps,retention terminals

a.are both located in the undercut
b.only one  terminal is placed in the undercut
c.none is located in  the undercut
d.one is located in near undercut and other in far undercut

Ans-b.only one terminal is placed in the undercut.

459.Bald tongue of sandwith is seen in

a.Perinicious anaemia
b.Niacin deficiency
c.Riboflavin defeciency
d.Scarlet fever

Ans-b.Niacin deficiency

458.Pseudorhagades are seen in

a.Ectodermal dysplasia
b.Congenital Syphillis
c.Scleroderma
d.Oral sub mucous fibrosis

Ans-a.Ectodermal dysplasia

457.Coup-de -sabre appearance is seen in

a.Scleroderma
b.SLE
c.Rhinoscleroma
d.Solar elastosis

Ans-a.Scleroderma

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