Radiation Exposure and Protection
- Previous year questions on Radiation Exposure and Protection for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Radiology section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 54 live questions in Radiation Exposure and Protection.
- 8 of 54 questions carry a verified exam year: 2018, 2019, 2020.
- Radiology is worth about 6 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 20 Aug 2026.
Q1.The Hematopoietic syndrome results when acute whole-body radiation exposure is above
- A50 rad
- B100 rad
- C200 rad✓ Correct answer
- D400 rad
Q2.Radiation exposure occurs in all except:
- ACT scan
- BPlain X-ray
- CFluoroscopy
- DMRI✓ Correct answer
Q3.A 7 week pregnant lady underwent a Chest X ray by mistake, what is to be done?
- AImmediate Termination of Pregnancy
- BDo Preinvasive Test
- CDo Chromosomal Testing
- DContinue Pregnancy✓ Correct answer
Q4.Radiation dose monitoring in occupational personal is done by
- ATLD Badge✓ Correct answer
- BLinear accelerator
- CCollimators
- DGrid
Q5.Ionising radiation acts on tissue depending upon:
- ALinear acceleration energy
- BExcitation of electron from orbit✓ Correct answer
- CFormation of pyrimidine dimers
- DThermal injury
Q6.True regarding permissible radiation
- AFor public - 0.5 mSv /year
- BFor radiation workers - 0.5 mSv / year
- CFor public 50 mSv /year
- DFor radiation workers - 50 mSv / year✓ Correct answer
Q7.Radiation Dose Monitoring in Occupational Workers is done by
- ATLD Badge✓ Correct answer
- BLinear Accelerator
- CCollimators
- DGrid
Q8.Maximum radiation exposure is by
- ARadiography
- BCT abdomen✓ Correct answer
- CRadionuclide scan
- DX-ray Abdomen
Q9.One gray equals
- A10 RAD
- B100 RAD✓ Correct answer
- C1000 RAD
- D10000RAD
Q10.24 yr old mother with 7 week POG presents to ANC OPD with accidental exposure to radiation. What is to be done?
- AImmediate termination of pregnancy
- BDo Preinvasive Test
- CDo chromosomal Testing
- DContinue Pregnancy✓ Correct answer
Answer key
Q1: C. 200 rad; Q2: D. MRI; Q3: D. Continue Pregnancy; Q4: A. TLD Badge; Q5: B. Excitation of electron from orbit; Q6: D. For radiation workers - 50 mSv / year; Q7: A. TLD Badge; Q8: B. CT abdomen; Q9: B. 100 RAD; Q10: D. Continue Pregnancy.
Other topics in Radiology
- Basic Principles of Medical Imaging
- Contrast Agents and Patient Preparation
- Identifying Imaging Modalities
- Chest Radiograph Fundamentals
- Chest Imaging: Pulmonary Disease
- Chest Imaging: Pleural and Mediastinal Disease
- Chest Imaging: Cardiovascular Disease
- Neuroimaging: Neurovascular Disease, Trauma and CT Brain
- Neuroimaging: CNS Tumours, Infections and Neurocutaneous Syndromes
- Neuroimaging: MRI of Neurodegenerative and Other CNS Disorders
- Imaging of the Head and Neck
- GI Imaging: Upper Tract Disorders and Pneumoperitoneum
- GI Imaging: Lower Tract Disorders
- Imaging of the Liver, Biliary Tract and Pancreas
- Renal and Urinary Tract Imaging
- Imaging in Women's Health
- Bone and Joint Imaging
- Nuclear Medicine Imaging
- Radiotherapy
- Interventional Procedures and Emergency Imaging