Free NBDE Part II Oral Radiology Question Bank

Question 6: Out of the following which organ is most radio-resistant?

A. Lymphoid

B. Lungs

C. Gonads

D. Cartilage

Answer & Explanation

Answer: [D]

 

Question 7: What percentage of X-rays undergoes coherent scattering when interact with atoms of absorber?

A. 7 %

B. 23 %

C. 49 %

D. 70 %

Answer & Explanation

Answer: [A]

 

Question 8: Which of the following is an example of fixed post mitotic cell?

A. Muscle

B. Fibroblasts

C. Spermatocytes

D. Endothelial cell

Answer & Explanation

Answer: [A]

 

Question 9: Which of the following is least resistant to radiation induced malignancy?

A. Skin

B. Brain

C. Stomach

D. Liver

Answer & Explanation

Answer: [C]

 

Question 10: By how much does the rectangular collimator reduces patient’s exposure percentage?

A. 60%

B. 45%

C. 30%

D. 15%

Answer & Explanation

Answer: [A]

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