Question1:-For heavier nuclei, stability requires :
A:-Fewer neutrons than protons
B:-Equal neutrons and protons
C:-More neutrons than protons
D:-No neutrons
Correct Answer:- Option-C
Question2:-The half-life of cobalt-60 is approximately 5.26
years. Its mean life is
approximately :
A:-3.5 years
B:-5.26 years
C:-7.6 years
D:-10 years
Correct Answer:- Option-C
Question3:-A generator operating at 100 kV and 500 mA has a
capacity of :
A:-5 kW
B:-50 kW
C:-500 kW
D:-0.5 kW
Correct Answer:- Option-B
0.01 (1%)?
Question4:-For a tungsten target (Z = 74), what voltage is
required to get
efficiency
A:-100 kV
B:-150 kV
C:-200 kV
D:-250 kV
Correct Answer:- Option-B
Question5:-Added filtration results in a beam with :
A:-Lower energy
B:-Higher average energy
C:-No energy change
D:-Reduced penetration
Correct Answer:- Option-B
Question6:-The ions considered in exposure are :
A:-Both positive and negative together
B:-Only neutral atoms
C:-Ions of one sign only
D:-Only electrons
Correct Answer:- Option-C
Question7:-The special unit of equivalent dose is :
A:-Gray (Gy)
B:-Sievert (Sv)
C:-Roentgen (R)
D:-Becquerel (Bq)
Correct Answer:- Option-B
Question8:-Kerma measures
A:-Ionization in air
B:-Energy transferred to charged particles
C:-Energy absorbed in tissue only
D:-Energy absorbed in air only
Correct Answer:- Option-B
Question9:-The TLD material developed and used by BARC for
Personnel
Monitoring Service is
A:-LiF : Dy
B:-LiF : Mn
C:-CaSO4 : Dy
D:-CaSO4 : Mn
Correct Answer:- Option-C
Question10:-Photoelectric effect results a small changes in
Z result in large
change in absorption due to its
A:-Z dependence
B:-1/Z dependence
C:-Z2 dependence
D:-Z3 dependence
Correct Answer:- Option-D
Question11:-At which vertebral level is the manubriosternal
joint usually found?
A:-T2 - T3
B:-T4 - T5
C:-T6 - T7
D:-T8 - T9
Correct Answer:- Option-B
Question12:-Which carpal bone lies in the proximal row on
the radial side?
A:-Lunate
B:-Scaphoid
C:-Triquetrum
D:-Pisiform
Correct Answer:- Option-B
Question13:-The obturator foramen is formed by
A:-Ilium and Sacrum
B:-Pubis and Ischium
C:-Ilium and Pubis
D:-Sacrum and Coccyx
Correct Answer:- Option-B
Question14:-The main function of the pectoral girdle is to :
A:-Protect the heart
B:-Attach the upper limb to the axial skeleton
C:-Support the lower limb
D:-Aid in digestion
Correct Answer:- Option-B
Question15:-The lymphatic system plays an important role in
:
A:-Digestion
B:-Respiration
C:-Defense against pathogens
D:-Bone formation
Correct Answer:- Option-C
Question16:-The respiratory center is located in the :
A:-Cerebrum
B:-Cerebellum
C:-Medulla oblongata
D:-Spinal cord
Correct Answer:- Option-C
Question17:-Which gland is the largest salivary gland?
A:-Sublingual gland
B:-Submandibular gland
C:-Parotid gland
D:-Buccal gland
Correct Answer:- Option-C
Question18:-Which enzyme is present in the stomach and
contributes to chyme
formation?
A:-Amylase
B:-Lipase
C:-Pepsin
D:-Trypsin
Correct Answer:- Option-C
Question19:-Which pancreatic hormone is secreted by beta (
A:-Glucagon
B:-Insulin
C:-Somatostatin
D:-Pancreatic polypeptide
Correct Answer:- Option-B
Question20:-Which valve closes at the beginning of systole?
A:-Aortic valve
B:-Pulmonary valve
) cells?
C:-Mitral valve
D:-Both mitral and tricuspid
Correct Answer:- Option-D
Question21:-The test to determine adequate filtration of an
X ray beam is by
measuring
A:-Exposure output
B:-Half Value Layer (HVL)
C:-Kilovoltage (kV)
D:-Patient exposure
Correct Answer:- Option-B
Question22:-When the distance from the X ray source is
doubled, the beam
intensity is
A:-Reduced by half
B:-Increased by half
C:-Reduced by one fourth
D:-Increased by one fourth
Correct Answer:- Option-C
Question23:-X rays were discovered by
A:-Madam Curie
B:-Henri Bequerel
C:-Roentgen
D:-Hounsfield
Correct Answer:- Option-C
Question24:-In intravenous urography (IVU) the first image
taken after contrast injection is
A:-Urogram
B:-Nephrogram
C:-Pyelogram
D:-Venogram
Correct Answer:- Option-B
Question25:-Ball Catcher's view is
A:-Both hands lateral
B:-Both hands anterior oblique
C:-Both hands posterior oblique
D:-Both hands PA view
Correct Answer:- Option-C
Question26:-Anterior superior iliac spine is related to
which part of the body ?
A:-Knee
B:-Skull
C:-Chest
D:-Hip
Correct Answer:- Option-D
Question27:-In radiography, Water’s projection is used to
image
A:-Sacroiliac joint
B:-Paranasal sinuses
C:-Mastoid air cells
D:-Patella
Correct Answer:- Option-B
Question28:-In radiography, the radiographic base line is
A:-Interpupillary line
B:-Infraorbital line
C:-Orbitomeatal line
D:-Auricular line
Correct Answer:- Option-C
Question29:-The following are properties of X rays, EXCEPT
A:-Ionise gases
B:-Electrically neutral
C:-Highly penetrating invisible rays
D:-Can be focussed by lens
Correct Answer:- Option-D
Question30:-A developer solution for manual processing
contain all the following, EXCEPT
A:-Sodium sulphite
B:-Sodium thiosulphate
C:-Sodium Carbonate
D:-Metol
Correct Answer:- Option-B
Question31:-In a film badge, the filter used for detecting
neutrons is
A:-Lead
B:-Copper
C:-Cadmium
D:-Plastic
Correct Answer:- Option-C
Question32:-Regarding Computed tomography (CT), table
movement per gantry
rotation is called
A:-Voxel
B:-Window level
C:-Pixel
D:-Pitch
Correct Answer:- Option-D
Question33:-Effective shielding material for beta radiation
is
A:-Lead
B:-Paper
C:-Perspex
D:-Copper
Correct Answer:- Option-C
Question34:-Thermoluminiscent dosimeter (TLD) to measure
effective body dose should
be worn
A:-Inside the lead apron stomach position
B:-Outside the lead apron chest position
C:-Outside the lead apron stomach position
D:-Inside the lead apron chest position
Correct Answer:- Option-D
Question35:-The effective dose from a PA chest examination
is typically
A:-0.02 mSv
B:-2 mSv
C:-0.2 mSv
D:-20 mSv
Correct Answer:- Option-A
Question36:-The radiographic procedure to visualise
intracranial vessels is called
A:-Perfusion scintigraphy
B:-Myelography
C:-Cisternography
D:-Cerebral angiography
Correct Answer:- Option-D
Question37:-The CT number of water is
A:--1000 HU
B:-+ 1000 HU
C:-0 HU (zero HU)
D:-100 HU
Correct Answer:- Option-C
Question38:-The regulatory board for radiation installations
in India is
A:-Bhabha Atomic Research Centre
B:-Atomic Energy Regulatory Board
C:-Board of Radiation and Isotope Technology
D:-Indian Association of Medical Physicists
Correct Answer:- Option-B
Question39:-DEXA is used for
A:-CT scan
B:-MRI
C:-Cardiac catheterisation
D:-Bone Mineral Densitometry
Correct Answer:- Option-D
Question40:-In MRI , TR and TE are expressed in
A:-Minutes
B:-Seconds
C:-Milli seconds
D:-Microseconds
Correct Answer:- Option-C
Question41:-Which principle of medical ethics ensures that
the patient is the primary
decision-maker in their own care?
A:-Beneficence
B:-Justice
C:-Respect for Autonomy
D:-Non-maleficence
Correct Answer:- Option-C
Question42:-According to AERB, what is the annual radiation
dose limit for occupational
workers, averaged over five consecutive years?
A:-1 mSv
B:-5 mSv
C:-10 mSv
D:-20 mSv
Correct Answer:- Option-D
Question43:-According to AERB guidelines, where is the
safest place for a technologist
to store their TLD badge after completing their routine
work?
A:-On the X-ray control panel
B:-Inside the X-ray installation room
C:-In a radiation-free area outside the X-ray room
D:-In the darkroom
Correct Answer:- Option-C
Question44:-In a radiology department, who bears the
ultimate responsibility for
obtaining informed consent, even if the task is delegated to
a technologist?
A:-The referring physician
B:-The radiologist
C:-The hospital administrator
D:-The lead technologist
Correct Answer:- Option-B
Question45:-Which fundamental principle of radiation
protection states that all
exposures should be kept as low as reasonably achievable
(ALARA)?
A:-Justification
B:-Optimization
C:-Limitation
D:-Accountability
Correct Answer:- Option-B
Question46:-A common gap in radiotherapy delivery in
resource-limited settings is:
A:-Excess availability of machines
B:-Lack of trained personnel
C:-Overuse of imaging
D:-High patient compliance
Correct Answer:- Option-B
Question47:-Which ethical principle is most important while
taking informed consent?
A:-Justice
B:-Autonomy
C:-Non-maleficence
D:-Confidentiality
Correct Answer:- Option-B
Question48:-When a patient is anxious before treatment, the
best initial approach is to:
A:-Ignore the anxiety
B:-Increase sedation immediately
C:-Delay treatment indefinitely
D:-Provide clear explanation and reassurance
Correct Answer:- Option-D
Question49:-In Image-Guided, Radiotherapy, the main
advantage is:
A:-Reduced treatment cost
B:-Real-time verification of target position
C:-Elimination of planning CT
D:-No need for immobilization
Correct Answer:- Option-B
Question50:-The typical energy range of megavoltage beams
used in external
beam radiotherapy is :
A:-50 — 150 kVp
B:-200 — 400 kVp
C:-1 — 25 MV
D:-100 — 200 MeV
Correct Answer:- Option-C
Question51:-The SI unit of absorbed dose is
A:-Roentgen
B:-Gray
C:-Sievert
D:-Curie
Correct Answer:- Option-B
Question52:-Which of the following is used as the source in
a conventional
telecobalt unit?
A:-Iridium - 192
B:-Cesium - 137
C:-Cobalt - 60
D:-Iodine - 125
Correct Answer:- Option-C
Question53:-The "D-max" (Depth of maximum dose)
for a 6 MV photon beam is
approximately
A:-0.5 cm
B:-1.5 cm
C:-2.5 cm
D:-3.0 cm
Correct Answer:- Option-B
Question54:-The half-life of Cobalt-60 is approximately :
A:-30 years
B:-5.26 years
C:-74 days
D:-1600 years
Correct Answer:- Option-B
Question55:-Inverse square law states
A:-Dose
B:-Dose
C:-Dose
distance
1/distance2
distance2
D:-Dose independent
Correct Answer:- Option-B
Question56:-The half-value layer (HVL) is the thickness of
material required to
reduce the beam intensity by
A:-25%
B:-50%
C:-75%
D:-100%
Correct Answer:- Option-B
Question57:-Thermoluminescent Dosimeters (TLD) commonly use
which material?
A:-Silver bromide
B:-Lithium Fluoride (LIF)
C:-Silicon
D:-Lead
Correct Answer:- Option-B
Question58:-Isocenter is defined as
A:-The center of the tumor
B:-The intersection point of the gantry, collimator and
couch axes
C:-The point of maximum dose
D:-The surface of the patient
Correct Answer:- Option-B
Question59:-The target in a high-energy Linear Accelerator
is typically made of :
A:-Copper
B:-Tungsten
C:-Aluminum
D:-Lead
Correct Answer:- Option-B
Question60:-Branchytherapy "High Dose Rate" (HDR)
usually refers to a dose rate
of
A:-> 12 Gy/hour
B:-< 2 Gy/hour
C:-5 Gy/year
D:-1 Gy/day
Correct Answer:- Option-A
Question61:-Which of the following is a common screening
test for Cervical Cancer?
A:-Mammography
B:-PSA test
C:-Pap Smear
D:-Colonoscopy
Correct Answer:- Option-C
Question62:-The biological mechanism by which cancer spreads
from the primary site to
distant organs is:
A:-Mitosis
B:-Metastasis
C:-Apoptosis
D:-Hypertrophy
Correct Answer:- Option-B
Question63:-Which of the following is a radio-resistant
tumor?
A:-Seminoma
B:-Osteosarcoma
C:-Lymphoma
D:-Small cell lung cancer
Correct Answer:- Option-B
Question64:-Etiology of Mesothelioma is strongly linked to:
A:-Tobacco
B:-Alcohol
C:-Asbestos exposure
D:-High fat diet
Correct Answer:- Option-C
Question65:-The term “Adjuvant Radiotherapy” refers to
treatment given:
A:-Before surgery
B:-During surgery
C:-After the primary treatment (like surgery)
D:-Instead of surgery
Correct Answer:- Option-C
Question66:-The "TNM" staging system is maintained
by:
A:-WHO
B:-AJCC/UICC
C:-Red Cross
D:-UNESCO
Correct Answer:- Option-B
Question67:-The anatomical landmark 'Carina' is located at
the level of:
A:-C4
B:-T4-T5
C:-T10
D:-L1
Correct Answer:- Option-B
Question68:-The ‘Sentinel Lymph Node’ is:
A:-The largest node in the body
B:-The first node to receive lymphatic drainage from a tumor
C:-A node in the groin only
D:-A node that is never cancerous
Correct Answer:- Option-B
Question69:-The most common histological type of Head and
Neck cancers is:
A:-Adenocarcinoma
B:-Squamous Cell Carcinoma
C:-Small Cell Carcinoma
D:-Sarcoma
Correct Answer:- Option-B
Question70:-Which virus is strongly associated with
Nasopharyngeal Carcinoma?
A:-HPV
B:-Epstein-Barr Virus (EBV)
C:-HIV
D:-Hepatitis B
Correct Answer:- Option-B
Question71:-D0 represents the dose required to reduce the
surviving fraction of cells to
____________ % of cells.
A:-63%
B:-50%
C:-0%
D:-37%
Correct Answer:- Option-D
Question72:-Intensity Modulated Radiotherapy differs from
3DCRT because:
A:-It uses higher energy beams
B:-It modulates beam intensity across the field
C:-It does not require planning
D:-It is less precise
Correct Answer:- Option-B
Question73:-The most aggressive form of Thyroid cancer is
A:-Papillary Thyroid Cancer
B:-Follicular Thyroid Cancer
C:-Medullary Thyroid Cancer
D:-Anaplastic Thyroid Cancer
Correct Answer:- Option-D
Question74:-According to AJCC 9th edition, Ca breast cT3
represents
A:-Size of the lesion more than or equal to 2 cm
B:-Size of the lesion is less than 2 cm
C:-Tumour size more than 5 cm
D:-Tumour size more than 4 cm
Correct Answer:- Option-C
Question75:-The 4 Rs of Radiobiology include all except
A:-Repair
B:-Regeneration
C:-Reassortment
D:-Reoxygenation
Correct Answer:- Option-B
Question76:-Example for a high LET radiation
A:-X-ray
B:-Alpha particle
C:-Electron
D:-Gamma rays
Correct Answer:- Option-B
Question77:-Conventional fractionation in radiotherapy means
A:-1.3 Gy
B:-2 Gy
C:-3 Gy
D:-4 Gy
Correct Answer:- Option-B
Question78:-The primary purpose of fractionation in
radiotherapy is to:
A:-Increase tumour hypoxia
B:-Reduce normal tissue damage
C:-Eliminate all tumour cells instantly
D:-Avoid use of high-energy beams
Correct Answer:- Option-B
Question79:-Short-course radiotherapy schedule for rectal
cancer
A:-20 Gy/5 fractions
B:-25 Gy/5 fractions
C:-30 Gy/10 fractions
D:-50 Gy/25 fractions
Correct Answer:- Option-B
Question80:-The commonest site of metastasis in carcinoma of
the prostate is
A:-Lung
B:-Brain
C:-Liver
D:-Bone
Correct Answer:- Option-D
Question81:-The Imaging technique most useful for soft
tissue delineation in brain
radiotherapy is
A:-MRI scan
B:-CT scan
C:-PET scan
D:-X-ray
Correct Answer:- Option-A
Question82:-The target volume that includes setup
uncertainties and internal organ
motion added to the CTV is
A:-GTV
B:-CTV
C:-PTV
D:-ITV
Correct Answer:- Option-C
Question83:-Following radiation exposure, the skin reaction
after 2 to 3 weeks is
A:-Fibrosis
B:-Necrosis
C:-Erythema
D:-Ulceration
Correct Answer:- Option-C
Question84:-Which immobilisation device is commonly used in head and neck
radiotherapy?
A:-VacLoc
B:-Thermoplastic mould
C:-Breast board
D:-Belly board
Correct Answer:- Option-B
Question85:-Radiation myelopathy is injury to which organ?
A:-Spleen
B:-Skin
C:-Parotid
D:-Spinal cord
Correct Answer:- Option-D
Question86:-A field technique with a lateral parallel
opposed lateral beam arrangement
is commonly used in
A:-Larynx
B:-Oesophagus
C:-Breast
D:-Prostate
Correct Answer:- Option-A
Question87:-An X-ray Machine which can reproduce radiation
treatment conditions is
called
A:-Cyclotron
B:-Magnetron
C:-Linear accelerator
D:-Simulator
Correct Answer:- Option-D
Question88:-The Primary treatment for locally advanced
cervical cancer is
A:-Surgery alone
B:-Concurrent chemoradiation
C:-Chemotherapy alone
D:-Immunotherapy alone
Correct Answer:- Option-B
Question89:-Half-life of lridium-192 is
A:-6 hours
B:-74 days
C:-9 hours
D:-5 years
Correct Answer:- Option-B
Question90:-The technique of delivering radiotherapy where
the gantry continuously
rotates while modulating beam intensity is
A:-IMRT
B:-2 D RT
C:-Hyperfractionated RT
D:-VMAT
Correct Answer:- Option-D
Question91:-Which of the following techniques uses daily
imaging to verify patient
positioning before
treatment?
A:-Conventional Radiotherapy
B:-Image-Guided Radiotherapy
C:-Orthovoltage therapy
D:-Teletherapy without imaging
Correct Answer:- Option-B
Question92:-The main purpose of immobilization devices in
radiotherapy is to:
A:-Reduce cost
B:-Improve patient comfort only
C:-Ensure reproducibility of treatment position
D:-Decrease machine time
Correct Answer:- Option-C
Question93:-Which of the following is a basic principle of
radiation protection?
A:-Increase exposure time
B:-Decrease distance from source
C:-Use shielding
D:-Avoid documentation
Correct Answer:- Option-C
Question94:-The unit of absorbed radiation dose is:
A:-Sievert (Sv)
B:-Gray (Gy)
C:-Becquerel (Bq)
D:-Coulomb (C)
Correct Answer:- Option-B
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