Q1 The power generating unit of a cell is ;
(A) Mitochondria (B) Endoplasmic reticulum
(C) Golgi complex (D) Centrosome
ANSWER- A
Q2. The white blood corpuscle which has multiple lobes is :
(A) Basophil (B) Lymphocyte (C) Neutrophil (D) Eosinophil
ANSWER-C
Q3. Highest area for perception of visual sensation 1s :
(A) Frontal lobe (B) Occipital lobe (C) Parietal lobe (D) ‘Temporal lobe
ANSWER-B
Q4. Bowman's capsule is located in :
(A) Kidney (B) Eye (C) Liver (D) Heart
ANSWER-A
Q5. Caseating granuloma is feature of :
(A) Pneumonia (B) Typhoid (C) Leptospirosis (D) Tuberculosis
ANSWER-D
Q6. The caloric value of carbohydrate is :
(A) 2 Keal/kg {B) 4 Keal/kg (C) 6 Kcal/kg (D) 9 Keal/kg
ANSWER-B
Q7. Right ventricle pumps blood into :
(A} Aorta (B) Pulmonary vein
(C) Superior vena cava (D) Pulmonary artery
ANSWER-D
Q8. Outermost coat of blood vessel is :
(A) Tunica media (B) Tunica albuginia
(C) Tunica intima (D) Tunica adventitia
ANSWER-D
Q9 Sensation mediated by nociceptors is :
(A) Touch (B) Temperature (C) Pain (D) Vibration
ANSWER-C
Q10 Acromegaly is due to excess secretion of :
(A) ACTH (B} TSH
(C) Growth hormone (D) Prolactin
ANSWER-C
Q11 Curie is the unit of :
(A) Energy of gamma rays (B) Half life
(C) Radioactivity (D) Intensity of X-rays
ANSWER-C
Q12. Ways of hardening the X-ray beam :
(A) Using filtration (B) Increasing the voltage
(C) Both of the above (D) None of the above
ANSWER-C
Q13. Thermions are :
(A) Protons {B) Electrons (C) Photons (D) Positrons
ANSWER-B
Q14. Isotopes are atoms having :
(A) Same number of protons, but different number of neutrons
(B) Same number of neutrons, but different number of protons
(C) Same number of protons and neutrons
(D) None of the above
ANSWER-A
Q15. Advantages of cancer screening include the following except :
(A) Reduction in mortality
(B) Reduced number of patients requiring radical treatment
(C) Over diagnosis of non-progressive lesions
(D) Reassurance of patients whose screening test is negative
ANSWER-C
16. Permissible annul radiation exposure limit for a radiation worker is -
(A) 1 mSv (B) 10 mSv (C) 20 mSv (D) 100 mSv
ANSWER-C
17. Which of the following is not a mode of radioactive decay ?
(A) Nuclear fusion (B) Positron emission
(C) Electron capture (D) Alpha decay
ANSWER-A
18. The definitive treatment of gastric cancer is :
{A) Surgery (B) Chemotherapy
(C) Radiotherapy (D) Hormone therapy
ANSWER-A
19. Alpha rays emitted from a radioactive substance are :
(A) Uncharged particles
(B) Mass and charge equal to that of a proton
(C) Negatively charged particle
(D) Doubly ionized Helium atom
ANSWER-D
Q20. A radioisotope has a half life of 75 years. The fraction of atoms of this element that will decay
in 150 years will be :
(A) 75% (B) 66.6% (C) 83.5% (D) 25%
ANSWER-A
Q21. The target material in.an X-ray tube must have :
(A) High atomic number (B) Low melting point
(C) High mass number (D) High cost
ANSWER-A
Q22. Radionuclides are produced by :
(A) Nuclear fission (B) Nuclear reactor
(C) Cyclotron (D) All of the above
ANSWER-D
Q23. Background radiation is contributed by the following except :
(A) Terrestrial radiation (B) Cosmic radiation
(C) Ultraviolet rays (D) Radioactive elements in our body
ANSWER-C
Q24. All are teletherapy sources except :
{A) Cobalt 60 (B) Cesium 137 (C) Iridium 192, (D) Radium 226
ANSWER-C
Q25. The following are electromagnetic radiation except :
(A) Characteristic radiation. (B) Beta radiation
(C) Bremsstrahlung radiation (PD) Annihilation radiation
ANSWER-B
Q26. Interactions of photons with matter include all except -
{A) Pair production (B) Leakage radiation
(C) Photoelectric effect (D) Compton scattering
ANSWER-B
Q27. X-ray beam quality depends on the :
(A) Accelerating voltage (B) Target material
(C) Inherent filtration (D) All of the above
ANSWER-D
Q28. D max for Cobalt 60 gamma rays is :
(A) 133 cm (B) 117 cm (C) 0.5m (D) 1.5 cm
ANSWER-C
Q29. Personal monitoring devices include all except :
(A) TLD (B) Film badge (C) Gun monitor (D) Pocket dosimeter
ANSWER-C
Q30. Advantage of diagnostic ultrasound over CT sean :
(A) No harmful side effects (B) Relatively cheap
(C) Non-invasive (D) All of the above
ANSWER-D
Q31. Gamma rays are deflected in:
(A) Magnetic field, but not in electric field
(B) Electric field, but not in magnetic field “
(C) Both magnetic and electric fields
(D) Neither magnetic nor electric fields
ANSWER-D
Q32. A radiotherapy simulator :
(A) Uses X-rays for imaging (B) Uses Gamma rays for therapy
(C) Isa brachytherapy machine (D) All of the above
ANSWER-A
Q33. Radiographic film is coated with gelatine layer containing :
(A) Silver halide crystals (B) Silver sulphide crystals
(C) Both of the above (D) None of the above
ANSWER-C
Q34. Radioisotopes used in brachytherapy include all except :
(A) Iodine 151 (B) Cesium 137
(C) Gold 198 (D) Radium 226
ANSWER-A
Q35. Beta rays emitted by a radioactive material are :
(A) Neutral particles
(B) Electrons orbiting around the nucleus
(C) Charged particles emitted by nucleus
(D) Electromagnetic radiations
ANSWER-C
Q36, Which of the following uses Gamma rays ?
(A) Simulator (B) Brachytherapy with iridium 192
(Cc) LINAC (D) IMRT
ANSWER-B
Q37, Principles of radiation protection include all except :
(A) Time (B) Distance (C) Shielding (D) Monitoring
ANSWER-D
Q38. in photoelectric emission, the velocity of electrons ejected from near the surface is:
{A} Same as those coming from interior of metal
(B) Less than those coming from interior of metal
(C) Larger than those coming from interior of metal
(D) None of the above
ANSWER-C
Q39. Radiation detecting instrument used in Nuclear Medicine :
(A) Gamma knife (B) Gamma camera
(C) Gamma zone monitor (D) Cyber knife
ANSWER-B
Q40. Isotope of iodine used in PET :
(A) I-123 (B) I-124 (C) I-127 (D) I-131
ANSWER-B
Q41. The half life of a radioactive element depends upon :
(A) Amount of element present (b) Temperature
(C) Pressure (D) None of the above
ANSWER-D
Q42. Mantle field radiotherapy is used in :
(A) Hodgkin's lymphoma (B) Non-Hodgkin's lymphoma
(C) Breast cancer (D) ‘Thyroid cancer
ANSWER-A
Q43. Scintillation crystals used in clinical PET imaging include all except :
(A) Bismuth germanium oxide (BGO)
(B) Gadolinium oxyorthosilicate (GSO)
(C) Sodium iodide (Thallium)
(D) Lattetium oxyorthosilicate {LSQ)
ANSWER-C
Q44. A moderator is used in Nuclear Reactor in order to:
(A) Accelerate the neutrons
(B) Slow down the speed of neutrons
(C) Increase the number of neutrons
(D) Decrease the number of neutrons
ANSWER-B
Q45. Pure Beta emitters include all except :
(A) -Phosphorous 32 (B) lodine 123
(C) Yttrium 90 (D) Strontium 89
ANSWER-B
Q46. Dose of palliative radiotherapy for brain metastases :
(A) 30 Gy in 10 fractions (B) 40 Gy in 10 fractions
(C) 60 Gy in 30 fractions (D) None of the above
ANSWER-A
Q47. Non-stochastic effect of radiation :
(A) Epilation (B) Carcinogenesis
(C) Genetic effect (D) All of the above
ANSWER-A
Q48. Cobalt 60 is produced from Cobalt 59 by :
(A) Proton bombardment (B) Deuteron bombardment
(C) Neutron bombardment (D) Electron bombardment
ANSWER-C
Q49. X-ray photons produced by an X-ray machine are :
(A) Heterogeneous in energy (B) Homogeneous in energy
(C) Both of the above (D) None of the above
ANSWER-A
Q50. Radioactivity is :
(A) An irreversible process (B) Self disintegrative process
(C) Spontaneous ‘ (D) All of the above
ANSWER-D
Q51. Linear accelerator is used in :
(A) Contact therapy (B) Superficial therapy
(C) Teletherapy (D) Grenz-Ray therapy
ANSWER-C
Q52. Which among the following is an electron accelerator ?
(A) Microtron (B) Betatron
(C) Linear Accelerator (D) All of the above
ANSWER-D
Q.53. Bragg peak characteristic is utilized in :
(A) Proton therapy (B) Neutron therapy
(C) Megavoltage therapy (D) Electron therapy
ANSWER-A
Q54. Phase of cell cycle most sensitive to radiation :
(A)M phase (B) Gl phase (C) Sphase (D)
ANSWER-A
Q55. Directly ionizing, radiation include ;
(A) Photons (B) Electrons (C) Neutrons (D)
ANSWER-B
Q56. Photoelectric attenuation is :
(A) Directly proportional to the cube of atomic number
(B) Directly proportional to the square of atomic number
(C) Inversely proportional to the square ol atomic number
(D) Inversely proportional to the cube of mass number
ANSWER-A
Q57. Minimum energy required for pair production :
(A) 0.51 MeV (B) 1.02 MeV (C) 10.2 Mev
ANSWER-B
Q58. Electron interact with matter by :
(A) Ionization (B) Excitation
(C) Both of the above (D) None of the above
ANSWER-C
Q59. Ideal radionuclide for imaging should be :
(A) Monoenergetic (B) Having short half life
(C) Pure Gamma emitter (D) All of the above
ANSWER-D
Q60. Indirectly ionizing, radiation include :
(A} X-rays (B) Gamma rays (C) Neutrons
ANSWER-D
Q61. The unit of exposure is :
(A) Curie (B) Roentgen (©) RAD
ANSWER- B
G? phase
None of the above
(D) 1.02 KeV
(D) All of the above
(D) Gray
Q62. Bolus is often used in electron beam thera py ta:
(A) Flatten out an irregular surface
(B) Reduce the penetration of electrons in parts of the field
(C) Increase the surface dose
(D) All of the above
ANSWER-D
Q63. Which among the following is not a permanent implant ?
(A) Palladium 103 (B) lodine 125 (C) Iridium 192 (D) Gold 198
ANSWER-C
Q64. Curable cancers include all except :
(A) Carcinoma of vocal cord
(B) Seminomia testis
(C) Metastatic pancreatic carcinoma
(D) Lymphoma
ANSWER-C
Q65. The following are brachytherapy applications except :
(A) Surface mold (B) Interstitial therapy
(C) Intraoperative therapy (D) Intracavitary therapy
ANSWER-C
Q66. Output of an X -ray machine is :
(A) Proportional to kilovoltage
(B) Proportional to square of kilovoltage
(C) Inversely proportional to square of kilovoltage
(D) None of the above
ANSWER-B
Q67. Quality factor (radiation weighting factor) for Alpha particle is :
(A) 1 (B) 4 (C) 5 (D) 20
ANSWER-D
Q68. Radiation Hormesis is :
(A) Beneficial effect of radiation
(B) Terratogenic effect of radiaton
(C) Radiation protection parameter
(D) None of the above
ANSWER-A
Q69 .Which among the following is stochastic effect of rachation ?
(A) Fibrosis (6) Cataract
(C) Genetic effect (D) Decrease in sperm count
ANSWER-C
Q70. Treatment of choice for small cell lung cancer ;
(A) Surgery (B) Radiotherapy
(C) Chemotherapy (D) Hormonal therapy
ANSWER-C
Q71. NICRP recommended annual radiation exposure limit for trainee radiation worker :
(A) 1 mSv (B) 5 mSv (C) 20 mSv (D) 50 mSv
ANSWER-A
Q72. Detectors most often used for X-ray measurements are ;
(A) lonization chamber
(B) Geiger counter
(C) Thermo Luminescent Dosimeter (TLD)
{(D} All of the above
ANSWER-D
Q73. Spread of cancer occur by the followmg ways :
(A) Local invasion (B) Lymphatic spread
(C) Haematogenous spread (D} All of the above
ANSWER-D
Q74. Output of an X-ray machine :
(A) Increases with tube current (B) Decreases with vollage
(C) Increases with filtration {(D) None of the above
ANSWER-A
Q75. Compton interaction is :
{A) Directly proportional to the square of atomic number
(B) Inversely proportional to the cube of atomic number
(C) Independent of atomic number
(D) None of the above
ANSWER-C
Q76. Highly radiosensitive tissue among the following is:
(A) Muscle (B) Bone (C) Epidermis (Dy) Nerve
ANSWER-C
Q77. Cancer of which among the following organs is likely to spread to bone ?
(A) Lip (B) Nasopharynx (C) Tongue (D} Maxilla
ANSWER-B
Q78. Radioiodine is used in the treatment of all except :
(A) Differentiated thyroid cancer (B) Medullary thyroid cancer
(C) Grave's disease (D) Multinodular goitre
ANSWER-B
Q79. PET scan :
(A) Is used in staging evaluation of lymphoma
(B) Is expensive
(C) 38F-FDG is the tracer used
(D) All of the above
ANSWER-D
Q80. In radioactive equilibrium :
(A) The parent and daughter elements are stable
(B) The parent element is radioactive, the daughter is always stable
(C) The parent and daughter nuclide will decay at the same rate
(D) None of the above
ANSWER-C
Q81. The approximate energy of the radiation emitted from tungsten target when an electron falls
from M shell to the K shell is :
(A) 70 KeV (B) 59 KeV (C) 67.5 KeV (D) 8.5 KeV
ANSWER-C
Q82. Isomers are :
(A) Atoms with same atomic number, different number of neutrons
(B) Atoms with same number of neutrons, different atomic mumber
(C) Atoms with same mass number, different number of neutrons
(D) Atoms with same mass number, same atomic number, different number of nuclear
energy levels
ANSWER-D
Q83. In photon beam interaction with matter the process in which there is no net loss of energy
is’:
(A) Coherent scattering (B) Photo electric effect
(C) Compton effect (D) Pair production
ANSWER-A
Q84. The unit of KERMA is:
(A) Roentgen (B) Gray (C) Sievert (D) Joule
ANSWER-B
Q85. Most commonly used radioactive source in modern brachytherapy is :
(A) Ra-226 (B) Ir-192 (C) 1-137 (D) Te 99™
ANSWER-B
Q86. The annual dose limit for general public as per Atomic Energy Regulatory Board (AERB)
puideline is :
(A) 20 mSv (B) 5 mSv (C) 1 mSv (D) 2mSv
ANSWER-C
Q87. The emulsion in a radiographic film contains :
(A) Caesium halide crystals (B) Calcium tungstate crystals
(C) Silver halide crystals (D) Silver atoms
ANSWER-C
Q88. When grids are used in radiography, the radiation dose to the patient :
{A) increases (B) decreases
(C) may or may not increase (D) remains same
ANSWER-A
Q89. In mammography the filter material used is :
(A) Aluminium (B) Tungsten (C) Copper (D) Molybdenum
ANSWER-D
Q90. The principle of Photostimulable phosphor luminescence is used in :
(A) Computed Radiography (CR) (B) Digital Radiography (DR)
(C) Image Intensifier (D) Darkroom Fluoroscopy
ANSWER-A
Q91. Among the following, which is not a component of Image Intensifier tube :
(A) Input sereen (B) Photomultiplier tube
(C) Photo cathede (D) Output screen
ANSWER-B
Q92. The factor which does not affect subject contrast is :
(A) Tissuedensity (B) KVp (C) Atomic number (D) mA
ANSWER-D
Q93. Protective apron used by radiation workers in radiography should have a minimum lead
equivalence of :
(A) 0.5 mm lead (B) 1mm lead (C) 2mm lead (D) 0.25 mm lead
ANSWER-D
Q94. The TLID badges used in India are made from }
(A) CaSo,: Dy (B) LiF (C) La,B,O, (D) CaF,: Mn
ANSWER-A
Q.95. A Co-60 source is having an activity of 10000 Ci. What will be its activity after an interval of
time equal to its average life ?
(A) 2369 Ci (B) 100 Ci (C) 5000 Ci (D) 10000 Ci
ANSWER-A
Q96. A photon of 2.5 MeV undergoes pair production. The pair of electron and positron possesses
equal kinetic energy of :
(A) 1.25 MeV each (B) 0.74 MeV each (C) 2.5MeVeach (D) 148 MeV each
ANSWER-B
Q97. What is the approximate ratio of bremsstrahlung to characteristic radiation coming out of an
X-ray tube with tungsten target if it is operated at 7) KVp ?
(A) 1:1 (B) 1:0 (c) 0:1 (D) 1:10
ANSWER-B
Q98. Adjacent regions of a radiograph have optical censities of 1.0 and 2.0. The differences in the
transmission of light through these two regions are :
(A) 1% and 2% (B} U% and 05% (C} 10% and 20% (D) 10% and 1%
ANSWER-D
Q99. Ultrasound waves are propagated through tissue as :
(A) Transverse waves (B) Electromagnetic waves
(C) Longitudinal waves (D) Hlectrical waves
ANSWER-C
Q100. Noise in a radiographic film is not caused by :
(A) Quantum mottle (B) Focal spot size
(C) Film graininess (D) Structure motile
ANSWER-B
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