The RRB Radiographer / X-Ray Technician Question Paper 2025 with the official answer key is now available. Railway Recruitment Boards conducted the CBT for Paramedical Categories, CEN No. 04/2024 from 28 to 30 April 2025. This post covers the 30 April 2025 morning shift (9:00 AM – 10:30 AM) paper of Radiographer X-Ray Technician — question paper PDF with answer key, section-wise and topic-wise analysis, 30 important questions with answers, the official RRB exam pattern and syllabus, and the official RRB-wise cut off.
Quick Answer: The RRB Radiographer X-Ray Technician paper of 30 April 2025 had 100 questions of 100 marks in 90 minutes — 70 Professional Ability plus 30 General Ability (General Science 11, General Awareness 9, Arithmetic & Reasoning 10) — with 1/3 negative marking. Radiographic positioning (14), radiation physics (12) and X-ray equipment & QA (11) were the top technical topics. The official cut off for this post (Category No. 10) went up to 84.01 in RRB Mumbai (Central Railway).
RRB Radiographer X-Ray Technician Exam 2025 – Key Highlights
Exam Date
30 Apr 2025
Total Questions
100
Radiographer Posts
64
Highest UR Cut Off
84.01
RRB Radiographer X-Ray Technician Exam 2025 – Quick Overview
| Recruiting Body | Railway Recruitment Boards (RRBs), Ministry of Railways |
| Notification | CEN No. 04/2024 – Paramedical Categories (1,376 posts) |
| Post Name | Radiographer X-Ray Technician (Category No. 10) |
| Vacancies | 64 posts |
| Pay Level | Level 5 – Initial pay ₹29,200 |
| Age Limit | 19 to 36 years (as per CEN 04/2024) |
| CBT Dates | 28, 29 and 30 April 2025 |
| Paper Analysed | 30 April 2025, morning shift (9:00 AM – 10:30 AM) |
| Questions / Marks | 100 questions / 100 marks |
| Duration | 90 minutes (120 minutes for PwBD candidates using a scribe) |
| Negative Marking | 1/3 mark for each wrong answer |
| Result & Official Cut Off | Declared on 11 August 2025 |
| Selection Process | CBT → Document Verification → Medical Examination |
RRB Radiographer X-Ray Technician Eligibility (Official – CEN 04/2024)
As per the official Centralised Employment Notice, the eligibility for Radiographer X-Ray Technician (Category No. 10) is as follows.
| Educational Qualification | "10+2 with Physics and Chemistry and Diploma in Radiography / X Ray Technician / Radiodiagnosis Technology (2 years course) from recognized Institute. Science graduates with Diploma in Radiography / X Ray Technician / Radiodiagnosis Technology (2 years course) shall be preferred." |
| Age Limit | 19 to 36 years (age relaxation as per rules for OBC, SC, ST, Ex-Servicemen, PwBD and other eligible categories) |
| Pay Level | Level 5 – Initial pay ₹29,200 (7th CPC) plus allowances |
| Medical Standard | B-1 |
| Vacancies | 64 posts in CEN 04/2024 |
Note: The qualification above is quoted from the official CEN 04/2024 notification. Students with DRT / B.Sc. Radiology / BRIT should check the exact wording of the new CEN before applying, because RRB can change the qualification or the age limit in a new notification.
RRB Radiographer X-Ray Technician Question Paper 2025 PDF Download
Download the complete RRB Radiographer X-Ray Technician question paper of the 30 April 2025 morning shift below. The PDF has all 100 questions with the correct answers marked as per the official RRB answer key. Solve it in 90 minutes and calculate your score with 1/3 negative marking.
RRB Radiographer X-Ray Technician Question Paper 2025 PDF
CEN 04/2024 – CBT held on 30 April 2025 (9:00 AM – 10:30 AM) – 100 Questions with Answer Key
⬇ Download Question Paper PDFFree PDF for practice by Testpaperlive Classes. Correct answers as per the official RRB answer key.
RRB Radiographer Paper Analysis 2025 (30 April, Morning Shift)
After checking all 100 questions, the Testpaperlive faculty team rates the paper as moderate. The General Ability part was direct — Class 10 level science, simple arithmetic and reasoning, and current affairs of 2024–25. The Professional Ability part was concept plus practice based: radiographic positioning and central-ray questions, radiation physics, X-ray tube and generator, darkroom work, and a good number of questions from CT, MRI and ultrasound. With 1/3 negative marking, accuracy decided the score.
| Section | Questions | Difficulty Level | Good Attempts |
|---|---|---|---|
| General Science | 11 | Easy | 9–10 |
| General Awareness | 9 | Moderate | 6–7 |
| General Arithmetic & Reasoning | 10 | Easy to Moderate | 7–8 |
| Professional Ability (Radiography) | 70 | Moderate | 50–55 |
| Total | 100 | Moderate | 72–80 |
🦴 Positioning rules
14 questions on Water's view, lateral skull, AP hip, calcaneum, foot, lumbar spine, mammography and bitewing.
⚛️ Physics is unavoidable
12 questions on heel effect, filters, scattering, HVL, transformer law, isotopes and atomic structure.
🛡️ Protection & AERB
7 questions on ICRP, NCRP fetal dose, gonad shielding, lead aprons, free radicals and fractionation.
🖥️ Modern imaging
13 questions from CT, MRI and ultrasound — pitch, window width, DICOM, gradient echo and artifacts.
RRB Radiographer Topic-wise Weightage 2025
1. Professional Ability – 70 Questions
Radiographic Positioning & Techniques – 14 Qs (20%)
Radiation Physics & X-Ray Production – 12 Qs (17%)
X-Ray Equipment & Quality Assurance – 11 Qs (16%)
Radiation Protection & Radiobiology – 7 Qs (10%)
Darkroom & Film Processing – 7 Qs (10%)
CT & Digital Imaging (PACS / DICOM) – 5 Qs (7%)
MRI – 5 Qs (7%)
Ultrasound – 3 Qs (4%)
Contrast Studies, Fluoroscopy & Theatre Work – 3 Qs (4%)
Patient Care & Ethics – 3 Qs (4%)
| Topic | Questions | Concepts Asked |
|---|---|---|
| Radiographic Positioning & Techniques | 14 | Water's view for maxillary sinuses, erect skull PA, lateral skull beam direction, axial calcaneum, dorso-plantar foot, AP hip central ray, pelvis ASIS positioning, PA lumbar spine, TMJ open & closed mouth, neonatal chest exposure time, skull clamp, transverse plane, mammography cleavage view, bitewing radiography |
| Radiation Physics & X-Ray Production | 12 | Heel effect, thermionic emission, compound Cu-Al filter, aluminium layer function, coherent (Thomson & Rayleigh) scattering, field size & scatter, HVL, three-phase generator (120°), transformer law, atomic number, isotopes, absorbed dose concepts |
| X-Ray Equipment & Quality Assurance | 11 | Anode heat storage & fluoroscopy, focusing cup, circuit breaker, beam alignment test, tube leakage limit (100 mR/hr), cylinder vs cone, linear tomography, scintillation detector & PMT, mobile X-ray units, AERB CT room size |
| Radiation Protection & Radiobiology | 7 | ICRP role, NCRP fetal dose limit (0.5 mSv/month), gonad shielding in KUB, lead aprons & shields, absorbed dose, free radicals, fractionation in radiotherapy |
| Darkroom & Film Processing | 7 | Rinsing after development, replenishment in automatic processor, emulsion layer, film hanger & metal hangers, darkroom hopper, darkroom floor requirements |
| CT & Digital Imaging | 5 | Window width control, pitch in spiral CT, Flash CT, CT pulmonary angiography (CTPA), DICOM standard |
| MRI | 5 | Gradient echo & susceptibility artifact, balanced gradient echo, high-velocity signal loss, odd mass number nuclei, phase mismapping (ghosting) |
| Ultrasound | 3 | Achilles tendon scanning position, acoustic enhancement artifact, reducing attenuation artifacts |
| Contrast Studies, Fluoroscopy & Theatre | 3 | Effervescent powder in double contrast barium swallow, intelligent collimation on C-arm, sterile covers on mobile fluoroscopy units |
| Patient Care & Ethics | 3 | Communication with A&E staff, body mechanics while lifting, informed consent |
2. General Ability – 30 Questions
| Section | Questions | Topics Asked |
|---|---|---|
| General Science | 11 | Biodegradable & non-biodegradable substances, decomposers, disease-causing agents, reflex action, spherical mirror & focus, atmospheric refraction, current in nichrome wire, homologous series, mixtures & compounds, Plaster of Paris, ozone depletion |
| General Awareness | 9 | Fundamental Rights vs DPSP, 73rd Amendment reservation, State Reorganisation Commission, MGNREGA, Delhi Assembly election 2025, Brihadeshwara temple, Laureus Comeback nomination, Exercise Harimau Shakti, Narmada rift valley |
| General Arithmetic & Reasoning | 10 | Bricks (mensuration), linear equations, successive profit, divisibility rule, time & work, direction sense, box arrangement, alphabet series, letter-number series, mathematical operations |
Important Questions Asked in RRB Radiographer Exam 2025 (with Answers)
Selected questions from the 30 April 2025 morning shift with answers as per the official RRB answer key. These concepts repeat in almost every Radiographer and X-Ray Technician exam.
| SN | Question (in short) | Correct Answer |
|---|---|---|
| 1 | What is the heel effect in X-ray production? | Variation in beam intensity based on the emission angle from the focal spot |
| 2 | What limits continuous fluoroscopy when the tube is started from a cold state? | The anode's heat storage capacity |
| 3 | Cathode part that directs the electron beam towards the anode | Focusing cup |
| 4 | What is thermionic emission? | Escape of electrons from a metal surface due to heat energy |
| 5 | Phase lag in a three-phase generator | 120° |
| 6 | What does the transformer law state? | Voltage is proportional to the number of turns in the coils |
| 7 | Atomic number (Z) of an atom represents | The number of protons in the nucleus |
| 8 | True statement about isotopes | Same atomic number but different atomic masses |
| 9 | True statement about coherent scattering | It includes Thomson and Rayleigh types and does not change the wavelength |
| 10 | Why is coherent scattering unimportant in diagnostic imaging? | It contributes less than 5% of total interactions |
| 11 | Most important factor in the production of scatter radiation | Field size |
| 12 | Why is Half Value Layer (HVL) used in fluoroscopy systems? | For beam penetration and total filtration |
| 13 | Purpose of the aluminium layer in a copper-aluminium compound filter | To absorb the characteristic radiation produced by copper |
| 14 | Advantage of a cylinder over a cone for beam restriction | Beam restriction occurs at the far end, reducing penumbra |
| 15 | Tolerance limit for tube leakage radiation during QA | 100 mR/hr |
| 16 | Minimum dimension of any one side of a CT scan room as per AERB | 4 metres |
| 17 | Radiation absorbed per unit mass by the patient is called | Absorbed dose |
| 18 | Main role of the ICRP | To give recommendations for radiation protection and dose limits |
| 19 | NCRP monthly equivalent dose limit for the embryo-fetus after declared pregnancy | 0.5 mSv |
| 20 | Why are free radicals highly reactive? | They have unpaired electrons |
| 21 | Role of fractionation in beam therapy | To divide the total dose into multiple smaller doses over time |
| 22 | Patient position in Water's view for maxillary sinuses | Chin touching the receptor with the orbitomeatal line at 45° |
| 23 | Direction of the beam in a lateral skull projection | Parallel to the interpupillary line and at right angles to the median sagittal plane |
| 24 | Central ray for an AP single hip radiograph | 2.5 cm distal along the perpendicular bisector between the ASIS and the symphysis pubis |
| 25 | Structures seen in a correct axial calcaneum radiograph | Subtalar joint and sustentaculum tali |
| 26 | Purpose of the cleavage view (CV) in mammography | To image the posterior medial tissue of both breasts |
| 27 | Primary purpose of bitewing radiography | To detect dental caries and assess restorations in premolar and molar teeth |
| 28 | Use of effervescent powder in a double contrast barium swallow | To create gas for oesophageal distension |
| 29 | What does pitch mean in spiral / helical CT? | Ratio of table travel per rotation to the total collimated beam width |
| 30 | Phase mismapping (ghosting) artifact in MRI | Replication of moving anatomy along the phase encoding direction |
RRB Radiographer X-Ray Technician Official Cut Off 2025 (CEN 04/2024)
Railway Recruitment Boards published the official cut off marks with the CBT result of CEN 04/2024 on 11–12 August 2025, under the title "Cut off Marks (out of 100 marks) of Candidates shortlisted for Document Verification". In CEN 04/2024, Radiographer X-Ray Technician is Category No. 10. The official Category 10 cut off published by the RRBs is given below (normalised marks out of 100).
| RRB | Railway Unit | UR | SC | ST | OBC | EWS | ESM |
|---|---|---|---|---|---|---|---|
| RRB Mumbai | CR (Central Railway) | 84.01360 | 73.80952 | – | 82.31293 | 78.23130 | 47.61905 |
| RRB Ajmer | NWR (North Western Railway) | 81.29252 | 67.68707 | 63.60544 | 79.93197 | – | – |
| RRB Mumbai | WR (Western Railway) | 78.23130 | 72.78911 | – | 74.48980 | – | – |
| RRB Guwahati | NFR (Northeast Frontier Railway) | 65.98640 | – | – | – | – | – |
Note: "–" means no cut off was published in that category for that railway unit (no vacancy or no candidate shortlisted). RRB Mumbai also published a cut off of 42.85714 for the R-LD (PwBD) category under Central Railway. For other RRBs, check the CEN 04/2024 result & cut off PDF on the official website of your RRB.
What the Official Cut Off Tells You
- The highest official UR cut off was 84.01 in RRB Mumbai (Central Railway) — the toughest zone for this post.
- The UR–OBC gap was small everywhere: 84.01 vs 82.31 (CR), 81.29 vs 79.93 (NWR), 78.23 vs 74.49 (WR).
- Radiographer cut off stayed much higher than Lab Assistant Grade II in the same CEN, so for RRB CEN 05/2026 aim for a normalised score of 85+ in the UR category.
RRB Radiographer Exam Pattern (Official – CEN 04/2024)
As per the official Centralised Employment Notice, the recruitment has a single stage CBT with the following scheme.
| Subject | Questions | Marks |
|---|---|---|
| Professional Ability | 70 | 70 |
| General Awareness | 10 | 10 |
| General Arithmetic, General Intelligence & Reasoning | 10 | 10 |
| General Science | 10 | 10 |
| Total | 100 | 100 |
- Duration: 90 minutes for 100 questions; 120 minutes for PwBD candidates availing the scribe facility.
- Negative marking: 1/3 of the marks allotted for each question is deducted for every wrong answer.
- Minimum qualifying marks: UR / EWS 40%, OBC & SC 30%, ST 25% (relaxable by 2% for PwBD candidates where applicable).
- Normalisation: if the CBT is held in multiple sessions, marks are normalised and shortlisting for DV is done on normalised marks.
- Question type: objective multiple choice with four options, only one correct.
RRB Radiographer X-Ray Technician Syllabus (Official)
RRB gives the detailed Professional Ability syllabus in Annexure-C of the CEN, and the General Ability part covers General Awareness, General Arithmetic, General Intelligence & Reasoning and General Science. Below is the topic list of the official syllabus, arranged the way it is actually asked in the paper.
Part A: Professional Ability (70 Marks)
- Radiation Physics: structure of the atom, atomic number & isotopes, electromagnetic radiation, production of X-rays, bremsstrahlung & characteristic radiation, interaction of X-rays with matter (photoelectric, Compton, coherent), attenuation, half value layer, filtration
- X-Ray Equipment: X-ray tube (cathode, focusing cup, anode, heat storage), transformers & rectification, three-phase generators, exposure timers & circuit breakers, beam limiting devices (cone, cylinder, collimator), grids, tomography, mobile units and C-arm, fluoroscopy and image intensifier
- Radiographic Positioning & Techniques: planes and positioning terminology, skull and facial bones (Water's view, lateral skull, TMJ), chest, abdomen and KUB, upper and lower limbs, pelvis and hip, vertebral column, dental and mammography views, paediatric and neonatal radiography
- Darkroom & Film Processing: darkroom design, safelight, hopper and ventilation, film construction & emulsion, cassettes and screens, manual and automatic processing, replenishment, film faults and artifacts
- Radiation Protection & Radiobiology: ALARA, ICRP, NCRP and AERB guidelines, dose limits for workers, public and pregnancy, personal monitoring devices, protective devices, quality assurance tests, biological effects of radiation and free radicals
- Contrast Media & Special Procedures: barium studies, IVU, MCU, HSG, angiography and interventional procedures, contrast reactions and patient preparation
- Modern Imaging: CT (pitch, window width, reconstruction, CTPA), MRI (sequences, artifacts, safety), ultrasound (principles and artifacts), PACS and DICOM
- Patient Care & Professional Ethics: patient communication and consent, infection control, vital signs, patient transfer and body mechanics, first aid, medico-legal aspects
Part B: General Ability (30 Marks)
- General Awareness (10): current affairs of the last one year, Indian polity and Constitution, history, geography, economy, government schemes, sports, awards and defence exercises
- General Arithmetic, Intelligence & Reasoning (10): number system, percentage, profit & loss, time & work, mensuration, linear equations, series, analogy, classification, direction sense, puzzles and mathematical operations
- General Science (10): Physics, Chemistry and Life Sciences up to Class 10 CBSE level
Tip: Always download the syllabus from the official CEN PDF on your RRB's website (for example rrbajmer.gov.in, rrbmumbai.gov.in, rrbguwahati.gov.in) and check Annexure-C before starting preparation, because RRB may revise topics in a new CEN.
How to Prepare for RRB Radiographer / X-Ray Technician 2026
- Finish the 70-mark professional part first — positioning, physics and equipment alone gave 37 of 70 questions in this paper.
- Learn positioning with the central ray — most questions ask about patient position, baseline and where the central ray enters.
- Keep a formula & value sheet — HVL, leakage 100 mR/hr, 2.5 mm Al filtration, AERB room sizes, fetal dose 0.5 mSv/month, pitch formula.
- Do not skip darkroom — 7 easy marks came from processing, hangers, hopper and floor requirements.
- Add CT, MRI and USG — 13 marks came from modern imaging, which most old books skip.
- Practise with negative marking — solve full-length mocks in 90 minutes and target 80+ attempts with 90% accuracy.
Prepare for RRB Radiographer & X-Ray Technician with Testpaperlive Classes
RRB CEN 05/2026 brings fresh Radiographer / X-Ray Technician vacancies. Join our Radiographer (DRT / BRIT) online batches — daily live classes at 3 PM, RRB previous year papers with solutions, positioning and physics revision series, and full-length mock tests with 1/3 negative marking. Call or WhatsApp us at +91-8078686728 for free counselling.
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- DRT 2nd Year Syllabus 2026
Conclusion
The RRB Radiographer X-Ray Technician paper of 30 April 2025 was a moderate, well-balanced paper where positioning, radiation physics and equipment decided the score. The official cut off went up to 84.01 normalised marks in RRB Mumbai (Central Railway), so a target of 85+ is safe for the UR category in the upcoming RRB CEN 05/2026 exam. Download the question paper PDF with answer key, follow the official syllabus, and practise previous year papers with negative marking.
