931. Leukoplakia with the worst prognosis is seen on the?
A. Dorsum of tongue
B. Floor of mouth
C. Buccal mucosa
D. Palate

932. In which of the following type of tumour the HPV-6 can be detected ?
A. Papilloma
B. CEOT
C. Sarcoma
D. Pyogenic Granuloma

933. Which of the following epithelial changes commonly signify precancerous condition?
A. Dyskeratosis
B. Hyperkeratosis
C. Parakeratosis
D. Acanthosis

934. Which of the following is not a feature of torus mandibularis ?
A. Common in Mongoloids
B. Present on the lingual surface of mandible below the mylohyoid line
C. Usually Bilateral
D. May or may not associated with torus palatinus

935. Which of the following does not have a viral etiology ?
A. Burkitt’s lymphoma
B. Nasopharyngeal carcinoma
C. Hodgkin’s lymphoma
D. Hepatocellular carcinoma

936. Increased incidence of squamous cell carcinoma of the skin is due to all except?

A. Ultraviolet radiation
B. Actinic keratitis
C. Alcohol
D. None of the above

937. Kaposi’s sarcoma is a tumour of?
A. Blood vessels
B. Reticuloendothelial system
C. Striated muscles
D. Smooth muscles

938. Which of the following is most likely to be fatal ?
A. Osteochondroma
B. Giant cell tumour
C. Paget’s disease
D. Multiple myeloma

939. The most common malignancy of the oral cavity is?
A. Basal cell carcinoma
B. Transitional cell carcinoma
C. Melanoma
D. Squamous cell carcinoma

940. A man who had suffered from displaced fracture of mandible complains of pain in-old fracture site near mental foramen. There is a movable tender mass on palpation in the area The best preoperative diagnosis is?
A. Neuroleiomyoma
B. Neurofibroma
C. Trigeminal neuralgia
D. Traumatic neuroma 

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