NPCIL Scientific Assistant study guide
NPCIL Scientific Assistant · Work through your exam, one topic at a time.
The NPCIL Scientific Assistant recruitment examination is the written screening stage used by Nuclear Power Corporation of India Limited when it hires Scientific Assistants and related Category II technical posts at its nuclear power stations and support facilities. Candidates typically hold a diploma or science degree in physics, chemistry, or a related discipline, and the written test checks whether that technical foundation is intact alongside the general skills expected in a plant environment. The NPCIL Scientific Assistant study guide has 10 sections and about 2,662 words.
01Physics
Physics in the NPCIL Scientific Assistant exam tests mechanics, electricity and magnetism, waves, optics, heat, and modern physics, usually through short numericals and unit-based concepts. Questions often combine two ideas, such as a resistor network with power dissipation or a photoelectric cell with stopping potential.
268 words, about 1 min02Chemistry
Chemistry tests atomic structure, periodic trends, chemical bonding, the mole concept, solutions, equilibrium, electrochemistry, corrosion, and basic nuclear and water chemistry relevant to a power plant. The exam favours calculation-based stoichiometry and concept comparisons over long descriptive answers.
266 words, about 1 min03Mathematics
Mathematics covers algebra, trigonometry, coordinate geometry, calculus, vectors, matrices, sequences and series, probability, and statistics. The paper rewards formula recall plus the ability to simplify before substituting numbers.
249 words, about 1 min04General English and Comprehension
General English tests grammar, vocabulary, error spotting, sentence improvement, antonyms and synonyms, idioms, para jumbles, and reading comprehension. Comprehension passages reward locating the author's main claim and the evidence for it rather than matching single words.
262 words, about 1 min05General Awareness
General Awareness covers static Indian polity, geography, history, economy, awards, sports, and international organisations. For NPCIL, questions may also touch on Indian energy institutions and public-sector undertakings, so link static facts to national infrastructure where possible.
266 words, about 1 min06Current Affairs and General Knowledge
Current Affairs tests recent national and international developments, government schemes, appointments, space and defence missions, awards, and sports results. Because news dates quickly, prepare against the recruitment notification's cut-off date and prefer official sources: PIB, ministry releases, ISRO, RBI, and Supreme Court or Election Commission announcements.
259 words, about 1 min07Reasoning, Aptitude and Quantitative Ability
This domain tests verbal and non-verbal reasoning plus arithmetic aptitude: series, coding-decoding, blood relations, syllogisms, puzzles, percentages, ratio and proportion, time and work, speed and distance, averages, interest, and mensuration. Speed comes from choosing the shortest valid method.
266 words, about 1 min08Computer Knowledge and Basic IT Skills
Computer Knowledge tests hardware, operating systems, MS Office, internet and networking basics, databases, and cybersecurity awareness. Questions are often shortcut- or terminology-based, so precise definitions matter more than long explanations.
243 words, about 1 min09Radiation Safety
Radiation Safety tests dose quantities and units, biological effects, ALARA, shielding, contamination control, radioactive waste, and the regulatory role of AERB. NPCIL expects a plant-aware understanding: dose is controlled by time, distance, and shielding, and contamination is prevented from spreading.
291 words, about 1 min10Nuclear Science Awareness and Industrial Safety
Nuclear Science Awareness covers fission, fusion, reactor components, the fuel cycle, criticality, and PHWR fundamentals. Industrial Safety covers permit-to-work, PPE, fire, electrical, confined-space, and lockout/tagout controls.
292 words, about 1 min