Railway NTPC and Group D: Topics That Come Back Often

Railway NTPC and Group D 2026. Old papers show the same thing. Many topics repeat. Number System. Simplification. Percentage. Polity. Current Affairs. Year after year.

Smart students do not treat every topic the same. They use this pattern. This post lists topics that appear very often and about how heavy each topic is. You can spend your time where marks really are.

At ACIselect, our SSC CGL/CHSL and Railways track covers each topic below with speed drills and mock tests. We help you get ready for government and banking exams at ACIselect in Guwahati. Only 30 students join each batch.**

Railway exam shape — quick look

Both NTPC and Group D cover four big areas:

Section	NTPC (CBT)	Group D (CBT)
Mathematics	✅ 30 questions	✅ 25 questions
General Intelligence & Reasoning	✅ 30 questions	✅ 30 questions
General Science	❌ (GK instead)	✅ 25 questions
General Awareness	✅ 40 questions	✅ 20 questions

Pattern based on recent RRB notifications; always verify latest official syllabus.

Mathematics — topics that repeat

Topic	Frequency	Approx. Weightage	Priority
Number System	Every paper	3–4 questions	Critical
Simplification	Every paper	3–4 questions	Critical
Percentage	Every paper	2–3 questions	Critical
Ratio & Proportion	Every paper	2–3 questions	Critical
Average	9/10 papers	1–2 questions	High
Time & Work	9/10 papers	2 questions	High
Time, Speed & Distance	8/10 papers	2 questions	High
Simple & Compound Interest	8/10 papers	1–2 questions	High
Profit & Loss	8/10 papers	1–2 questions	High
Data Interpretation (tables)	7/10 papers	3–4 questions	High
Algebra (basic)	6/10 papers	1–2 questions	Medium
Geometry (basic)	5/10 papers	1–2 questions	Medium
Mensuration	5/10 papers	1–2 questions	Medium

Takeaway: Get strong on Number System, Simplification, Percentage, and Ratio — that is about 12–15 math marks before you touch the rest.

Reasoning — the same kinds of questions

Topic	Frequency	Approx. Questions
Analogy	Every paper	2–3
Classification (Odd One Out)	Every paper	2–3
Series (Number/Letter)	Every paper	3–4
Coding-Decoding	Every paper	2–3
Blood Relations	9/10 papers	1–2
Direction Sense	9/10 papers	2–3
Syllogism	8/10 papers	2–3
Venn Diagrams	8/10 papers	1–2
Matrix / Figure Series	7/10 papers	2–3
Puzzle (seating arrangement)	7/10 papers	2–3
Statement & Conclusion	6/10 papers	1–2
Mirror/Water Image	6/10 papers	1–2

Plan: Reasoning gives many easy marks if you know patterns. Solve 30 questions each day. Use a timer.

General Science (Group D focus)

Subject	High-Frequency Topics
Physics	Motion, Force, Work-Energy, Light, Electricity
Chemistry	Acids-Bases, Metals, Periodic Table, Daily-life chemistry
Biology	Human body, Diseases, Nutrition, Plants, Cell structure

Note for Group D: Science can be easier than Math for students who did not pick science streams. Do not skip it. 25 marks sit in this section.

General Awareness — static plus current

Topic	Frequency	Notes
Indian History (Freedom struggle)	Every paper	3–4 Q
Indian Polity (Constitution)	Every paper	3–4 Q
Indian Geography	Every paper	2–3 Q
Current Affairs (6 months)	Every paper	5–8 Q
Awards & Honours	9/10 papers	2–3 Q
Sports	9/10 papers	1–2 Q
Books & Authors	7/10 papers	1–2 Q
Economics (basic)	7/10 papers	1–2 Q
Railway-specific GK	NTPC only	2–3 Q

How to divide your time

Section	Time Budget	Approach
Mathematics	25–30 min	Easy questions first, skip long sums
Reasoning	25–30 min	Pattern practice = faster work
General Science	15–20 min	Fact questions — trust what you studied
General Awareness	15–20 min	Answer what you know, guess wisely on the rest

4-week plan for repeating topics

Week 1: Number System + Simplification + Percentage + Ratio (50 Q/day) Week 2: Reasoning — Series, Coding, Analogy, Direction (40 Q/day) Week 3: GA static (History, Polity, Geography) + Science basics Week 4: Full mocks + Current Affairs sprint + error log review

Use Lifetime Test Support to make daily quizzes on your weakest repeating topics.

How ACIselect covers Railway prep

Our 90-Day Unified Bootcamp program (₹14,999 · 90-day classroom program + lifetime app access^) includes full SSC CGL/CHSL & Railways coverage within the unified batch:

• Specialized Quantitative Training — Simplification speed drills
• Small Batches (max 30) — individual weak-area tracking
• Lifetime Test Support (full access) — topic-wise micro-assessments after every lecture
• Premium AC Classrooms — Six Mile, Guwahati

90-Day Unified Bootcamp includes Lifetime Test Support^ — full Lifetime Test Support access for mocks until your final selection.

Batch timings: Dual Lecture Track 4:30 PM – 7:30 PM

The 80/20 rule for Railway exams

About 80% of your marks can come from about 20% of the topics above. That is not a guess — it follows patterns from more than ten years of papers.

Stop random study days. Study what comes back.

Join the SSC CGL/CHSL & Railways track →