The General Knowledge paper in the CDS examination is often considered unpredictable due to its vast syllabus and changing trends. However, among all GK subjects, Science has consistently remained the most reliable and scoring area. Despite variations in question patterns and difficulty levels, Science continues to provide stability and clarity. For serious CDS aspirants, prioritising Science is therefore a strategic necessity rather than an option.

1. Role of Science in Clearing GK Sectional Cutoff
The GK sectional cutoff in CDS generally remains around 20 marks.
Science alone is capable of helping an average aspirant cross this cutoff comfortably.
Strong performance in Science reduces dependence on volatile areas like current affairs and static polity.
2. High and Consistent Question Weightage
In almost every CDS attempt, candidates can expect 25+ questions from Science.
Physics, Chemistry, and Biology together form one of the largest components of the GK paper.
This high weightage makes Science a high-impact scoring subject.
3. Limited and Well-Defined Syllabus
CDS Science questions are predominantly based on Class 9 and Class 10 NCERT textbooks.
No advanced theories, complex numericals, or higher-level concepts are required.
Questions focus on basic concepts, definitions, and real-life applications.
4. Stability Despite Changing Exam Patterns
While the weightage of current affairs, history, and polity fluctuates, Science remains constant.
Even analytical or statement-based questions are rooted in fundamental scientific principles.
Once prepared, Science remains relevant across multiple CDS attempts.
5. Frequently Repeated Core Topics
- Physics: Motion, work and energy, electricity, heat, sound.
- Chemistry: Acids and bases, metals and non-metals, fuels, chemical reactions.
- Biology: Human physiology, nutrition, diseases, environment, plant life.
6. Time-Efficient and High-Return Subject
Science can be prepared effectively in a short time span with focused NCERT study.
It offers maximum marks with minimum time investment.
Ideal for aspirants managing English, Mathematics, and GK simultaneously.
7. Long-Term Utility Across Attempts
Once prepared thoroughly, Science content remains valid for future CDS attempts.
Unlike current affairs, it does not require frequent updates or revisions.
One-time preparation yields long-term benefits.
8. Confidence Booster in the GK Paper
Science questions are objective and concept-based, reducing ambiguity.
Strong preparation lowers guesswork and negative marking.
Builds confidence and improves overall exam temperament.
Final Takeaway
- 25+ questions in every CDS attempt
- NCERT Class 9–10 based syllabus
- Capable of clearing GK cutoff independently
In an examination defined by uncertainty, Science remains the most dependable scoring constant for CDS aspirants.
Author: By Akshay Pathania Cleared CDS 7 Times in a Row
