RRB Group D Important Questions 2025, Check Solved Answers

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

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

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: