RRB Group D Important Questions 2026: Candidates preparing for the Group D exam, must go through the important questions from the previous year papers. In case you are aspiring to join the Indian Railways for the Group D position, you should have a solid preparation strategy to crack the exam on your first attempt. In this article, we have provided some of the top RRB Group D important questions with answers for the candidates. This will provide them with an idea about the type of questions asked and the difficulty level of the examination.
Download Most Repeated Questions for RRB Group D PDF
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RRB Group D Important Questions
We have given below the most repeated RRB Group D important questions. Candidates will get an idea of the difficulty level from these questions:
1. Find the next number in the series: 2, 6, 12, 20, 30
a) 36
b) 40
c) 42
d) 48
Answer: c) 42
2. If 15% of a number is 360, what is the number?
a) 2400
b) 2200
c) 2600
d) 2000
Answer: a) 2400
3. Find the missing number: 7, 14, 28, ?, 112
a) 42
b) 49
c) 56
d) 64
Answer: c) 56
4. A train running at 72 km/h crosses a pole in 5 seconds. What is the length of the train?
a) 90 m
b) 100 m
c) 110 m
d) 120 m
Answer: b) 100 m
5. The ratio of ages of A and B is 4:5. After 6 years, it becomes 5:6. What is A’s present age?
a) 24
b) 28
c) 32
d) 36
Answer: c) 32
6. If x + 1/x = 5, find x² + 1/x².
a) 21
b) 23
c) 25
d) 27
Answer: a) 23
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7. Find the odd one out:
a) Iron
b) Copper
c) Mercury
d) Aluminium
Answer: c) Mercury
8. The HCF of two numbers is 18 and their LCM is 1800. If one number is 180, find the other number.
a) 180
b) 90
c) 120
d) 360
Answer: a) 180
9. Which gas is used in welding?
a) Oxygen
b) Nitrogen
c) Acetylene
d) Carbon dioxide
Answer: c) Acetylene
10. If the cost price of 15 articles equals the selling price of 12 articles, find the profit percent.
a) 20%
b) 22%
c) 25%
d) 30%
Answer: c) 25%
11. Find the next term: AZ, BY, CX, DW, ?
a) EV
b) EU
c) FV
d) FU
Answer: a) EV
12. A sum becomes ₹8000 in 2 years and ₹9680 in 4 years at simple interest. Find the principal.
a) 6000
b) 6400
c) 6800
d) 7200
Answer: b) 6400
13. Which vitamin deficiency causes night blindness?
a) Vitamin B
b) Vitamin C
c) Vitamin D
d) Vitamin A
Answer: d) Vitamin A
14. If sin A = 3/5, then cos A is:
a) 4/5
b) 5/4
c) 3/4
d) 1/5
Answer: a) 4/5
15. Find the incorrect pair:
a) Newton – Force
b) Watt – Power
c) Ohm – Resistance
d) Joule – Voltage
Answer: d) Joule – Voltage
16. A man walks 5 km north, then 3 km east, then 5 km south. How far is he from the starting point?
a) 3 km
b) 4 km
c) 5 km
d) 8 km
Answer: a) 3 km
17. Which metal is liquid at room temperature?
a) Lead
b) Mercury
c) Zinc
d) Sodium
Answer: b) Mercury
18. Find the next number: 1, 4, 9, 16, 25, ?
a) 30
b) 35
c) 36
d) 49
Answer: c) 36
19. The average of 8 numbers is 15. If one number is excluded, the average becomes 14. Find the excluded number.
a) 20
b) 21
c) 22
d) 23
Answer: b) 21
20. Which river is known as the “Sorrow of Bihar”?
a) Ganga
b) Kosi
c) Gandak
d) Son
Answer: b) Kosi
21. Find the missing number: 3, 11, 19, 27, ?
a) 33
b) 34
c) 35
d) 36
Answer: c) 35
22. The SI unit of pressure is:
a) Joule
b) Pascal
c) Newton
d) Watt
Answer: b) Pascal
23. If 40% of a number is 320, what is the number?
a) 640
b) 720
c) 800
d) 900
Answer: c) 800
24. Who discovered gravity?
a) Galileo
b) Newton
c) Einstein
d) Kepler
Answer: b) Newton
25. Find the next number: 5, 10, 20, 40, ?
a) 60
b) 70
c) 80
d) 100
Answer: c) 80
26. Which instrument measures atmospheric pressure?
a) Thermometer
b) Barometer
c) Hygrometer
d) Anemometer
Answer: b) Barometer
27. A can do a work in 10 days and B in 15 days. How many days will they take together?
a) 5
b) 6
c) 7
d) 8
Answer: b) 6
28. The chemical formula of washing soda is:
a) NaHCO₃
b) Na₂CO₃·10H₂O
c) NaCl
d) CaCO₃
Answer: b) Na₂CO₃·10H₂O
29. Find the odd one out:
a) Square
b) Rectangle
c) Triangle
d) Cube
Answer: d) Cube
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30. Which blood group is known as universal donor?
a) A
b) B
c) AB
d) O
Answer: d) O
31. The angle between the hour and minute hand at 3:30 is:
a) 45°
b) 60°
c) 75°
d) 90°
Answer: c) 75°
32. The longest bone in the human body is:
a) Tibia
b) Humerus
c) Femur
d) Radius
Answer: c) Femur
33. If x:y = 5:7 and y:z = 7:9, then x:z = ?
a) 5:9
b) 7:9
c) 35:63
d) 5:7
Answer: a) 5:9
34. Which planet is known as the Red Planet?
a) Venus
b) Jupiter
c) Mars
d) Saturn
Answer: c) Mars
35. The LCM of 12 and 18 is:
a) 24
b) 36
c) 48
d) 72
Answer: b) 36
36. Find the next number: 8, 27, 64, 125, ?
a) 144
b) 196
c) 216
d) 256
Answer: c) 216
37. Which gas is essential for photosynthesis?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
38. A man buys an article for ₹600 and sells it for ₹750. Find profit percent.
a) 20%
b) 22%
c) 25%
d) 30%
Answer: c) 25%
39. The smallest prime number is:
a) 0
b) 1
c) 2
d) 3
Answer: c) 2
40. Find the missing term: 1, 3, 6, 10, ?
a) 13
b) 14
c) 15
d) 16
Answer: c) 15
41. Which vitamin is produced by the human skin in sunlight?
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin D
Answer: d) Vitamin D
42. If the perimeter of a square is 48 cm, find its area.
a) 144
b) 156
c) 196
d) 256
Answer: a) 144
43. Who is known as the “Father of Indian Constitution”?
a) Mahatma Gandhi
b) B. R. Ambedkar
c) Jawaharlal Nehru
d) Rajendra Prasad
Answer: b) B. R. Ambedkar
44. Find the odd one out:
a) Cuboid
b) Cube
c) Sphere
d) Square
Answer: d) Square
45. If the radius of a circle is doubled, its area becomes:
a) Double
b) Triple
c) Four times
d) Eight times
Answer: c) Four times
46. Which acid is present in lemon?
a) Acetic acid
b) Citric acid
c) Lactic acid
d) Tartaric acid
Answer: b) Citric acid
47. The SI unit of work is:
a) Watt
b) Joule
c) Newton
d) Pascal
Answer: b) Joule
48. Find the next number: 11, 22, 44, 88, ?
a) 166
b) 176
c) 188
d) 198
Answer: b) 176
49. Which organ purifies blood in the human body?
a) Liver
b) Heart
c) Kidney
d) Lungs
Answer: c) Kidney
50. If the speed of a train is 54 km/h, find its speed in m/s.
a) 12
b) 13
c) 14
d) 15
Answer: d) 15
RRB Group D Syllabus 2026
The RRB Group D syllabus consists of subjects like Mathematics, General Intelligence and Reasoning, General Science and General Awareness. Check out the details below:
| Subject | Topics / Sub-Topics |
|---|---|
| Mathematics | Number System (LCM, HCF), BODMAS, Decimals, Fractions, Ratio & Proportion, Percentages, Mensuration, Time & Work, Time & Distance, Simple & Compound Interest, Profit & Loss, Algebra, Geometry & Trigonometry, Elementary Statistics, Square Root, Age Calculations, Calendar & Clock, Pipes & Cisterns |
| General Intelligence & Reasoning | Analogies, Alphabet & Number Series, Coding & Decoding, Mathematical Operations, Relationships, Syllogism, Jumbling, Venn Diagrams, Data Interpretation & Sufficiency, Conclusions & Decision Making, Similarities & Differences, Analytical Reasoning, Classification, Directions, Statement-Arguments & Assumptions |
| General Science | Physics, Chemistry, Life Sciences (Class 10th level concepts) – includes basics of matter, force & laws of motion, energy & power, heat, electricity, periodic table, human body, ecology & environment |
| General Awareness & Current Affairs | National & International Current Affairs, Art & Culture, Awards & Honors, Sports, Geography (Indian), History, Polity, Economy, Government Schemes, Days & Events, Capitals & Currencies, Science & Technology, Environment, Banking Awareness( |
How to prepare for RRB Group D Exam?
To prepare effectively for the exam, candidates must understand the proper RRB Group D Exam Pattern. We have mentioned below the topper’s strategy to succeed in the examination:
| Section | Focus Areas | Preparation Strategy |
|---|---|---|
| Mathematics | Arithmetic & basic concepts | Understand fundamentals first, especially Number System, Percentages, Ratio & Proportion, Average, Time & Work, Speed & Distance |
| Speed & accuracy | Use shortcut tricks and mental math techniques to save time in the exam | |
| Practice | Practice daily question sets and previous year questions to improve speed and accuracy | |
| Performance analysis | Take regular mock tests to identify weak areas and track improvement | |
| Reasoning | Scoring topics | Start with easy topics like Coding-Decoding, Analogy, Number/Letter Series, Classification |
| Logical thinking | Gradually move to puzzles such as Venn Diagrams, Blood Relations, and Direction Sense | |
| Pattern recognition | Observe repeated question patterns, as many reasoning questions follow similar logic every year | |
| Exam readiness | Attempt reasoning-focused mock tests to improve accuracy and decision-making under time pressure | |
| General Awareness | Current affairs | Read newspapers or use current affairs apps daily for national and international updates |
| Static GK & Railways | Focus on Railway-related news, government schemes, national events, capitals, awards, and sports | |
| Revision | Prepare short notes and revise them weekly for better retention |
Check:
RRB Group D Preparation Strategy and RRB Group D Study Plan
We hope the above-mentioned questions gave you an idea about the difficulty level of the exam. To read more such articles, visit the Oliveboard website.
FAQs
Questions are asked about subjects like Mathematics (25 questions, 25 marks), General Intelligence and Reasoning (30 questions, 30 marks), General Science (25 questions, 25 marks), and General Awareness and Current Affairs (20 questions, 20 marks).
The qualifying mark for the RRB Group D examination varies according to the category of the applicant. The General and EWS candidates require around 40% marks to qualify, whereas the SC, ST, and OBC applicants require 30% marks to qualify.
The most demanding posts are Assistant Signal and Telecom, and Assistant Depot.
To qualify for the RRB Group D Examination in the first attempt, candidates must follow a perfect preparation strategy. The preparation tips are discussed in the article.
- RRB Group D Vacancy 2026, Know the Posts Available
- RRB Group D Study Plan for 15 Days, Check Daily Schedule
- RRB Group D Books For Preparation, Check Subject Wise Books
- High Scoring RRB Group D Mathematics Topics, Check Details
- Important Maths Questions for RRB Group D Exam, Check Details
- RRB Group D City Intimation Slip 2025-26 Out, Check rrb.digialm.com
Hello! This is Arijit Dutta. I am a skilled Content Writer at Oliveboard with nearly 3+ years of experience in crafting engaging, informative, and exam-focused content for the Railways Domain. With a strong command of language and a keen understanding of learner needs, I contribute significantly to Oliveboard’s mission of delivering high-quality educational resources. Passionate about clear communication and continuous learning, I consistently create content that helps government job aspirants achieve their goals. Outside of work, I enjoy playing cricket and listening to music, which helps me stay balanced and creative in my professional journey.