Strategy guides for NDA Maths, English, Physics, Chemistry, Biology, Geography, History, Polity, Economics and Current Affairs

A 2,160-question analysis of every Mathematics paper from 2017 to 2026. Principles, strategy, compound tricks, year-on-year drift, and the distractor traps.

• 11 cross-chapter principles with DB-tagged drill links
• Tier A / B / Skip strategy backed by per-chapter %HARD
• Year-by-year drift across 15 principles
• Distractor traps measured against the live bank

A 900-question analysis of the English half of GAT, 2017–2026. Recall vs Rule vs Reason buckets, 16 chapter playbooks, vocabulary word families, and the trap shapes NDA reuses.

• Recall (Vocab + Idioms) / Rule (Grammar + Errors) / Reason (RC + Cloze + PQRS + FIB) strategy
• 16 chapter-and-subtopic playbooks with worked PYQs
• Vocabulary word families mined from 270 PYQ-tested words
• Trends: Grammar exploded post-2024, Spotting Errors went quiet

A 449-question analysis of every PART B Physics paper, 2017–2026. Recall vs Apply vs Reason strands with a %HARD-aware drill posture, 14 chapter playbooks, formula compendium, and the trap shapes NDA reuses.

• Recall (Sound + Modern + Astronomy) / Apply (Light + Mechanics + Gravity) / Reason (E&M + Heat + Fluids) strands
• 14 chapter playbooks — one per chapter with worked PYQs
• 32-formula single-page revision compendium
• Trends: paper hardened 22× per question 2021→2026 (2% → 44% HARD)

A 262-question analysis of every PART B Chemistry paper, 2017–2026. Recall vs Rule vs Calculate strands matched to a Recall-heavy bank, 12 chapter playbooks, 50-compound reference, and the trap shapes NDA reuses.

• Recall (Carbon + Matter + Industrial + Metals + Hydrogen + Everyday) / Rule (Atomic Structure + Acids/Bases + Reactions + Bonding) / Calculate (Mole) strands
• 12 chapter playbooks — one per chapter with worked PYQs
• 50-compound name↔formula↔use reference in 6 themed clusters
• Trends: paper has NOT hardened (UNLIKE Physics) — drill all 10 years equally

A 190-question analysis of every PART B Biology paper, 2017–2026. Recall vs Apply vs Verify strands matched to an 82%-recall bank, 9 chapter playbooks, 50-fact reference, and the trap shapes NDA reuses.

• Recall (Human Physiology + Cell Biology + Microbiology + Biodiversity + Genetics) / Apply (Plant Biology + Reproduction) / Verify (Ecology + Biochemistry) strands
• 9 chapter playbooks — one per chapter with worked PYQs
• 50-fact reference (diseases ↔ pathogens, vitamins ↔ deficiencies, hormones ↔ glands, scientists ↔ discoveries)
• Trends: paper has NOT hardened — only 4 HARDs across 190 q over 10 years

A 345-question analysis of every PART A Geography paper, 2017–2026. Recall vs Apply vs Verify strands, 7 chapter playbooks, 62-fact reference, and the trap shapes NDA reuses.

• Recall (Indian Geography Economy + Indian Geography Physical + World/Human) / Apply (Climatology + Earth's Structure) / Verify (Earth in Space + Oceanography) strands
• 7 chapter playbooks — one per chapter with worked PYQs
• 62-fact reference (Indian rivers ↔ states, mountain peaks ↔ ranges, mineral/crop ↔ producer states, local winds ↔ regions)
• Trends: paper has NOT consistently hardened — drill all 10 years equally

A 260-question analysis of every PART A History paper, 2017–2026. Cornerstone vs Foundation Recall vs Quick-Win chapter-tier strands, 4 chapter playbooks, ~95-entry timeline + named-pair reference, and the trap shapes NDA reuses.

• Cornerstone (Modern India alone — 47% of bank) / Foundation Recall (Ancient + Medieval India) / Quick-Win (World History) tier-strands
• 4 chapter playbooks — one per chapter with worked PYQs
• ~95-entry timeline + named pairs (Era timeline, Rulers ↔ dynasty, Reformers ↔ movement, Scholars ↔ texts, British Acts ↔ year)
• Trends: paper has NOT consistently hardened, but chapter mix shifted (Modern dominated 2017–20, Ancient surged 2022–24)

A 90-question analysis of every PART A Polity paper, 2017–2026. Cornerstone vs Foundation Recall vs Specialist Wildcard tier-strands, 4 chapter playbooks, ~80-entry Articles + Amendments + Bodies + Schedules reference, and the trap shapes NDA reuses.

• Cornerstone (Government Structure — 40% of bank) / Foundation Recall (Indian Constitution + FR/DPSP) / Specialist Wildcard (World Polity — 42% HARD) tier-strands
• 4 chapter playbooks — one per chapter with worked PYQs
• ~80-entry reference (Key Articles ↔ subject, Constitutional Amendments ↔ year ↔ theme, Constitutional Bodies ↔ function ↔ Article, Parts ↔ Schedules ↔ content)
• Trends: paper has NOT consistently hardened, but 2026 NDA-1 was the hardest (50%) and most Govt-Structure-heavy (7 of 10 q)

A 24-question analysis of every PART A Economics paper, 2017–2026. The smallest GAT topic — about 1.5 q/paper, ~6 marks max. The honest stance, the Five Year Plans timeline, on a single page.

• Single-page guide — bank too thin for a multi-route structure
• 75% of bank is Five Year Plans — 12-plan timeline as the recall anchor
• 41.7% HARD bank-wide — densest of any NDA subject, distractors are engineered
• Honest cap: ~6 marks/paper, target 3–4. Don't let it eat time from Geography/History.

A 180-question shape analysis of NDA Current Affairs across every paper 2017–2026. 90% of questions reference events within 12 months of their paper — so this guide teaches the recurring question SHAPES, not the historical facts. Eight anchor themes with prep checklists.

• Single-page Template D — theme-prep-checklist for a short-half-life subject
• 8 anchor themes (5+ year recurrence) + 16 recurring + 7 occasional
• Drill the bank for SHAPE; harvest THIS YEAR's facts from an external compendium
• ~10 q/paper · ~40 marks max · target ~24 marks at 80% on 7 attempts