Patna: Mastering general science in competitive exams requires a balanced mix of conceptual clarity and smart test-taking strategies. The core subjects tested are physics, chemistry, and biology (typically of 10th-grade NCERT-level), alongside recent scientific discoveries.
Most competitive examinations include some questions on general science. In general, the questions asked vary by exam type:
- BPSC and other state PSCs: Emphasize factual recall—human biology and deficiency diseases.
- SSC and Railways: Focus on pattern recognition—SI units, everyday mechanics, optics, and common compounds—treating previous years’ questions as the de facto syllabus.
- UPSC: Shift to applied science and current affairs—space, biotech, public health, and societal impacts of technology—rather than deep equations.
The Four Pillars of General Science
1. Human Biology & Public Health
Emphasize human physiology, nutrition and vitamins, plant anatomy, diseases, pathogens, vectors (examples such as kala-azar and dengue).
2. Chemistry
Concentrate on chemical formulas, acid-base-salt concepts, the reactivity series of metals, carbon compounds, metals and corrosion, and kitchen chemistry.
3. Physics and Mechanics
Focus on SI units, energy basics, Newtonian motion, optics, waves and sound (Doppler effect, ultrasound), and electricity.
4. Modern Science and Technology
Understand space orbits, GPS, ISRO missions, CRISPR and biotech basics, AI, IoT, 5G, and the societal impact of technologies.
Focus on Fundamentals
General science questions are largely application-based. Instead of memorizing facts, understand the underlying principles of phenomena (e.g., how laws of reflection shape acoustics, the periodic table, or cell biology).
Relate to Daily Life
Notice how scientific theories translate into daily occurrences, such as why a pencil bends in water (refraction) or how vitamins impact health.
Practice and Revision
Previous Year Questions (PYQs)
Approximately 80-90% of general science questions are repeated or slightly modified from past exams. Regularly solve PYQs to understand the exact exam pattern.
Mock Tests
Take timed sectional and full-length mock tests to manage your time and improve your guesswork.
(The writer, Ashok Kumar Jha, is an assistant professor of physics at Patna University.)
