Complete Guide to NDA chemistry syllabus class 11 12 2026

The NDA chemistry syllabus primarily covers fundamental concepts from Class 11 and 12, including physical, inorganic, and organic chemistry. Topics like atomic structure, chemical bonding, redox reactions, and states of matter are high-weightage. We at Exam Bhai emphasize mastering NCERT textbooks to secure maximum marks in the General Ability Test (GAT).

What is the Exam?

The National Defence Academy (NDA) examination is a prestigious gateway for young aspirants seeking a career in the Indian Army, Navy, and Air Force. Conducted twice a year by the Union Public Service Commission (UPSC), the exam tests candidates on their aptitude, intelligence, and personality. The selection process involves a written examination followed by the highly rigorous Services Selection Board (SSB) interview process.

The written exam is divided into two papers: Mathematics and the General Ability Test (GAT). Chemistry, as a subset of the GAT paper, plays a vital role in determining a candidate's merit. Because the GAT covers a vast range of subjects, having a specialized strategy for the chemistry portion is what separates successful candidates from the rest.

Key Highlights 2026

• Exam Conducting Body: UPSC (Union Public Service Commission)
• Exam Frequency: Twice a year (NDA I and NDA II)
• Paper Mode: Offline (Pen and Paper)
• Question Type: Objective (Multiple Choice Questions)
• Chemistry Weightage: Approximately 15-20 questions in the GAT section
• Negative Marking: 0.33 marks deducted for each wrong answer
• Difficulty Level: Moderate to High (Conceptual based on NCERT)

Syllabus 2026

The chemistry syllabus for the NDA exam is specifically designed to assess a candidate's grasp of general science. While it is based on the Class 11 and 12 curriculum, the focus is on practical applications rather than purely theoretical memorization. Below is the breakdown of the essential topics.

Exam Pattern

The GAT paper is where your knowledge of chemistry is tested. It is crucial to understand the distribution of marks to manage your time effectively during the exam. You can practice free mock tests for Defence on Exam Bhai to get familiar with this pattern.

Eligibility Criteria

According to the official notifications released by upsc.gov.in, candidates must meet specific criteria to be eligible for the NDA exam:

• Age Limit: Candidates must be between 16.5 and 19.5 years old as of the start of the course.
• Educational Qualification:
  • For Army Wing: 12th pass under the 10+2 pattern of School Education or equivalent examination.
  • For Air Force and Naval Wings: 12th pass with Physics, Chemistry, and Mathematics.
• Nationality: Citizen of India, subject of Nepal, or a Tibetan refugee who came to India before January 1, 1962, with the intention of permanently settling in India.

Application Process

1. Visit the official UPSC website at upsc.gov.in.
2. Fill out the Part I registration (Candidate details).
3. Proceed to Part II registration (Fee payment, exam center selection, and photo/signature upload).
4. Review all details carefully before final submission.
5. Download and print the confirmation page for future reference.

Preparation Strategy

Success in the NDA chemistry section requires a disciplined approach. We at Exam Bhai suggest the following roadmap:

1. Master the NCERTs: Treat your Class 11 and 12 chemistry NCERT books as your bible. UPSC questions are frequently lifted or adapted from the exercises and boxes within these texts.
2. Focus on Concepts: Do not rote-learn. Understand the 'why' behind reactions. For example, understand why certain metals are more reactive than others.
3. Active Practice: Regular assessment is the only way to retain information. You should attempt curated mock papers for Defence on Exam Bhai to test your speed and accuracy.
4. Previous Year Papers: Analyze the last 5 years of UPSC question papers to identify recurring themes and frequently asked chemical formulas.
5. Subject-Wise Revision: Use our personalized study planners for Defence on Exam Bhai to ensure you dedicate equal time to Physical, Organic, and Inorganic sections.

Cut-Off Trends

Cut-offs are determined by the UPSC based on the difficulty level of the exam and the number of candidates appearing. Based on data from upsc.gov.in, the qualifying marks for the written exam generally fluctuate between 340 to 360 out of 900. Chemistry contributes to the GAT score, which often requires a strong performance to offset the toughness of the English or Geography sections.

Frequently Asked Questions

Q1: Is the Class 12 chemistry syllabus fully included in NDA? A1: No, the NDA chemistry syllabus covers a selection of topics from both Class 11 and 12, focusing on general science applications rather than advanced theoretical concepts.

Q2: Are there numerical questions in the chemistry section? A2: Yes, you may encounter basic numerical problems related to mole concepts, stoichiometry, or gas laws, but they are rarely overly complex.

Q3: Is the NCERT book enough for NDA chemistry? A3: Yes, NCERT is sufficient for conceptual clarity, but you must supplement it with practice questions to improve your exam-taking speed.

Q4: Does the chemistry section have negative marking? A4: Yes, as part of the GAT paper, every incorrect answer in the chemistry section attracts a penalty of 0.33 marks.

Q5: Which topics in Chemistry are most important for NDA? A5: Atomic structure, chemical bonding, oxidation-reduction reactions, and properties of common substances (acids, bases, and salts) are consistently high-weightage areas.

Q6: Can I skip Chemistry if I am strong in Physics? A6: We at Exam Bhai strongly advise against this. Every mark counts toward the final cutoff; skipping an entire subject significantly lowers your probability of clearing the written stage.