50 RRB NTPC Graduate Level MCQs to Boost Your Exam Preparation
1. Which of the following rivers does not originate from the Himalayas?
A) Ganga
B) Yamuna
C) Godavari
D) Brahmaputra
Answer: C) Godavari
Explanation: Godavari originates from the Western Ghats in Maharashtra, unlike Ganga, Yamuna, and Brahmaputra, which originate from the Himalayas. This question tests your knowledge of Indian river systems.
2. The speed of sound is fastest in which medium?
A) Air
B) Water
C) Steel
D) Vacuum
Answer: C) Steel
Explanation: Sound travels fastest in solids due to closer particle arrangement. Steel allows sound waves to propagate faster than in air or water, while in a vacuum, sound cannot travel.
3. Who among the following was the first woman President of India?
A) Sarojini Naidu
B) Pratibha Patil
C) Indira Gandhi
D) Sonia Gandhi
Answer: B) Pratibha Patil
Explanation: Pratibha Patil became the first woman President of India in 2007, marking a historic milestone in Indian politics.
4. If the sum of the first 20 natural numbers is subtracted from the sum of the first 30 natural numbers, what is the result?
A) 210
B) 230
C) 255
D) 260
Answer: C) 255
Explanation: Using the formula n(n+1)/2, the sum of first 30 numbers is 465, first 20 numbers is 210. Subtracting gives 465 – 210 = 255.
5. Which element has the highest electronegativity?
A) Oxygen
B) Fluorine
C) Chlorine
D) Nitrogen
Answer: B) Fluorine
Explanation: Electronegativity measures the tendency of an atom to attract electrons. Fluorine has the highest electronegativity value of 3.98 on the Pauling scale.
6. The Treaty of Versailles was signed in which year?
A) 1918
B) 1919
C) 1920
D) 1921
Answer: B) 1919
Explanation: The Treaty of Versailles ended World War I between Germany and Allied Powers in 1919. It imposed heavy reparations on Germany.
7. In a class of 60 students, 40 like cricket, 30 like football, and 10 like both. How many like neither?
A) 10
B) 20
C) 15
D) 0
Answer: A) 10
Explanation: Using inclusion-exclusion principle: 40 + 30 – 10 = 60 liking at least one sport. Total students = 60 → 60 – 50 = 10 neither.
8. Which of the following is not a primary color of light?
A) Red
B) Blue
C) Green
D) Yellow
Answer: D) Yellow
Explanation: Primary colors of light are Red, Green, and Blue. Yellow is a secondary color formed by combining red and green light.
9. The Indian National Congress was founded in:
A) 1885
B) 1905
C) 1919
D) 1920
Answer: A) 1885
Explanation: Indian National Congress, the largest political party in India, was founded in 1885 by Allan Octavian Hume to promote political dialogue.
10. A train 120 m long crosses a platform 80 m long in 20 seconds. Find the speed of the train.
A) 45 km/h
B) 54 km/h
C) 60 km/h
D) 36 km/h
Answer: D) 36 km/h
Explanation: Total distance = 200 m, time = 20 s. Speed in m/s = 200/20 = 10 m/s. Converting to km/h: 10 × 18/5 = 36 km/h.
11. The chemical formula of Gypsum is:
A) CaSO₄·2H₂O
B) CaCO₃
C) CaO
D) Ca(OH)₂
Answer: A) CaSO₄·2H₂O
Explanation: Gypsum is a hydrated calcium sulfate with formula CaSO₄·2H₂O, widely used in cement and plaster.
12. Which planet has the shortest day in the solar system?
A) Jupiter
B) Mercury
C) Venus
D) Saturn
Answer: A) Jupiter
Explanation: Jupiter completes one rotation in about 10 hours, making its day the shortest among all planets.
13. Who wrote “The Discovery of India”?
A) Jawaharlal Nehru
B) Mahatma Gandhi
C) Subhash Chandra Bose
D) B.R. Ambedkar
Answer: A) Jawaharlal Nehru
Explanation: Jawaharlal Nehru wrote this book during his imprisonment in 1942–46, exploring India’s history, culture, and philosophy.
14. In a right-angled triangle, if one angle is 30°, the ratio of the sides opposite 30° and 60° is:
A) 1:√3
B) √3:1
C) 1:2
D) 2:1
Answer: A) 1:√3
Explanation: In a 30°-60°-90° triangle, sides are in ratio 1:√3:2 (opposite 30°, 60°, hypotenuse).
15. Which Indian state has the highest literacy rate?
A) Kerala
B) Maharashtra
C) Tamil Nadu
D) Goa
Answer: A) Kerala
Explanation: Kerala leads India in literacy with over 96% literacy rate due to strong educational policies.
16. 5 years ago, the ratio of A’s age to B’s age was 2:3. If A is now 30, find B’s present age.
A) 35
B) 43
C) 45
D) 50
Answer: B) 43
Explanation: Let B’s age 5 years ago = x. Then, A’s age 5 years ago = 2x/3. A now = 2x/3 + 5 = 30 → 2x/3 = 25 → x = 37.5. B now = 37.5 + 5 = 42.5, approx 43.
17. What is the SI unit of electric resistance?
A) Ohm
B) Volt
C) Ampere
D) Farad
Answer: A) Ohm
Explanation: Ohm (Ω) is the unit of resistance. 1 Ohm = 1 Volt/Ampere.
18. The capital of Australia is:
A) Sydney
B) Melbourne
C) Canberra
D) Brisbane
Answer: C) Canberra
Explanation: Canberra was selected as the capital in 1908 as a compromise between Sydney and Melbourne.
19. The smallest prime number greater than 50 is:
A) 51
B) 53
C) 55
D) 57
Answer: B) 53
Explanation: 53 is prime because it is divisible only by 1 and itself.
20. The currency of Japan is:
A) Yen
B) Yuan
C) Won
D) Ringgit
Answer: A) Yen
Explanation: The Japanese currency is Yen, denoted by ¥, and is widely used in international trade.
21. The atomic number of Carbon is:
A) 6
B) 12
C) 14
D) 8
Answer: A) 6
Explanation: Carbon has an atomic number of 6, meaning it has 6 protons in its nucleus, which defines the element.
22. The 42nd Amendment of the Indian Constitution is related to:
A) Fundamental Rights
B) Fundamental Duties
C) Directive Principles of State Policy
D) Judiciary
Answer: C) Directive Principles of State Policy
Explanation: The 42nd Amendment (1976) emphasized the Directive Principles of State Policy and made changes to strengthen the directive principles in governance.
23. If 5x – 7 = 3x + 9, what is the value of x?
A) 6
B) 7
C) 8
D) 9
Answer: A) 8
Explanation: Solving 5x – 7 = 3x + 9 → 2x = 16 → x = 8. Basic algebra is tested here.
24. Who among the following started the ‘Swadeshi Movement’ in India?
A) Bal Gangadhar Tilak
B) Bipin Chandra Pal
C) Lala Lajpat Rai
D) Mahatma Gandhi
Answer: B) Bipin Chandra Pal
Explanation: Bipin Chandra Pal, along with Bal Gangadhar Tilak and Lala Lajpat Rai, initiated the Swadeshi Movement (1905) to boycott British goods.
25. A clock is set at 6:00. What is the angle between the hour and minute hands at 6:30?
A) 15°
B) 165°
C) 180°
D) 90°
Answer: B) 165°
Explanation: Hour hand at 6 → 180°, hour hand moves 0.5° per minute, so at 6:30 it’s 180 + 15 = 195°, minute hand at 6:30 is 180°, angle = 195 – 180 = 15°, smaller angle = 165°.
26. Which gas is released during photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
Answer: A) Oxygen
Explanation: During photosynthesis, plants convert carbon dioxide and water into glucose and oxygen using sunlight. Oxygen is released as a by-product.
27. The first Indian to win a Nobel Prize was:
A) Rabindranath Tagore
B) C.V. Raman
C) Hargobind Khorana
D) Subrahmanyan Chandrasekhar
Answer: A) Rabindranath Tagore
Explanation: Rabindranath Tagore won the Nobel Prize in Literature in 1913 for his book “Gitanjali.”
28. A sum of money doubles itself in 8 years at simple interest. What is the rate of interest?
A) 12.5%
B) 10%
C) 15%
D) 8%
Answer: B) 12.5%
Explanation: Simple Interest (SI) formula: SI = PRT/100. Doubling → SI = P → P = PR8/100 → R = 12.5%.
29. Which is the largest gland in the human body?
A) Pancreas
B) Thyroid
C) Liver
D) Pituitary
Answer: C) Liver
Explanation: The liver is the largest gland, performing multiple vital functions like detoxification, bile production, and metabolism.
30. Who among the following is known as the ‘Father of the Indian Constitution’?
A) Jawaharlal Nehru
B) B.R. Ambedkar
C) Sardar Patel
D) Rajendra Prasad
Answer: B) B.R. Ambedkar
Explanation: Dr. B.R. Ambedkar chaired the drafting committee of the Constitution of India and is considered its principal architect.
31. The chemical formula of common salt is:
A) NaCl
B) KCl
C) Na₂CO₃
D) NaOH
Answer: A) NaCl
Explanation: Common salt is Sodium Chloride (NaCl), composed of sodium and chlorine in a 1:1 ratio.
32. The speed of light in vacuum is approximately:
A) 3 × 10⁵ km/s
B) 3 × 10⁸ m/s
C) 3 × 10⁶ m/s
D) 3 × 10⁷ m/s
Answer: B) 3 × 10⁸ m/s
Explanation: Light travels at a speed of 3 × 10⁸ m/s in vacuum, which is the maximum speed in the universe.
33. In which year did India conduct its first nuclear test ‘Smiling Buddha’?
A) 1972
B) 1974
C) 1976
D) 1980
Answer: B) 1974
Explanation: India conducted its first nuclear test at Pokhran in Rajasthan in 1974, codenamed ‘Smiling Buddha’.
34. If 7 people can complete a work in 12 days, how many people are required to complete the same work in 6 days?
A) 12
B) 14
C) 15
D) 16
Answer: B) 14
Explanation: Work ∝ number of people × time. 7 × 12 = x × 6 → x = 14.
35. Who proposed the theory of relativity?
A) Newton
B) Einstein
C) Galileo
D) Bohr
Answer: B) Einstein
Explanation: Albert Einstein proposed the Special and General Theory of Relativity, revolutionizing physics and the understanding of space-time.
36. The largest desert in the world is:
A) Sahara
B) Arabian
C) Gobi
D) Antarctic
Answer: D) Antarctic
Explanation: Antarctica is the largest desert by area due to its extremely low precipitation, despite being covered with ice.
37. In which organ of the human body is insulin produced?
A) Liver
B) Pancreas
C) Kidney
D) Gallbladder
Answer: B) Pancreas
Explanation: Insulin is a hormone secreted by beta cells in the pancreas to regulate blood sugar levels.
38. Who is the author of ‘India Wins Freedom’?
A) Jawaharlal Nehru
B) Maulana Abul Kalam Azad
C) Subhash Chandra Bose
D) Sardar Patel
Answer: C) Subhash Chandra Bose
Explanation: ‘India Wins Freedom’ is an autobiography of Subhash Chandra Bose, chronicling his role in India’s independence struggle.
39. If the probability of an event is 0.2, what are its odds in favor?
A) 1:4
B) 4:1
C) 1:5
D) 5:1
Answer: A) 1:4
Explanation: Odds in favor = P/(1–P) = 0.2/0.8 = 1:4.
40. Who discovered penicillin?
A) Marie Curie
B) Alexander Fleming
C) Louis Pasteur
D) Robert Koch
Answer: B) Alexander Fleming
Explanation: Alexander Fleming discovered penicillin in 1928, the first widely used antibiotic.
41. The highest mountain peak in India is:
A) Nanda Devi
B) Kanchenjunga
C) Everest
D) Kamet
Answer: B) Kanchenjunga
Explanation: Kanchenjunga, located in Sikkim, is the highest peak in India at 8,586 meters above sea level.
42. In the human body, red blood cells are produced in:
A) Liver
B) Bone marrow
C) Spleen
D) Kidney
Answer: B) Bone marrow
Explanation: Red blood cells are produced in the bone marrow through a process called erythropoiesis.
43. Who is known as the ‘Missile Man of India’?
A) A.P.J. Abdul Kalam
B) Vikram Sarabhai
C) Homi Bhabha
D) C.V. Raman
Answer: A) A.P.J. Abdul Kalam
Explanation: Dr. A.P.J. Abdul Kalam played a key role in India’s missile development program and is called the ‘Missile Man’.
44. A sum of ₹12,000 is lent at simple interest at 10% per annum. What will be the interest after 3 years?
A) ₹3,000
B) ₹3,200
C) ₹3,600
D) ₹4,000
Answer: C) ₹3,600
Explanation: SI = PRT/100 = 12000103/100 = ₹3,600.
45. Which vitamin is also called ascorbic acid?
A) Vitamin A
B) Vitamin B
C) Vitamin C
D) Vitamin D
Answer: C) Vitamin C
Explanation: Vitamin C, also known as ascorbic acid, is essential for growth, repair of tissues, and immune function.
46. The planet known as the ‘Red Planet’ is:
A) Venus
B) Mars
C) Jupiter
D) Mercury
Answer: B) Mars
Explanation: Mars appears red due to iron oxide (rust) on its surface, earning it the name ‘Red Planet’.
47. The largest ocean in the world is:
A) Atlantic
B) Pacific
C) Indian
D) Arctic
Answer: B) Pacific
Explanation: The Pacific Ocean is the largest, covering more than one-third of the Earth’s surface.
48. Who among the following is the founder of the Brahmo Samaj?
A) Raja Ram Mohan Roy
B) Dayanand Saraswati
C) Swami Vivekananda
D) Ishwar Chandra Vidyasagar
Answer: A) Raja Ram Mohan Roy
Explanation: Raja Ram Mohan Roy founded the Brahmo Samaj in 1828 to reform and modernize Indian society.
49. If a train running at 60 km/h crosses a pole in 18 seconds, its length is:
A) 180 m
B) 300 m
C) 360 m
D) 400 m
Answer: C) 300 m
Explanation: Speed = 60 km/h = 16.67 m/s. Distance = speed × time = 16.67 × 18 ≈ 300 m.
50. The process of conversion of solid directly into gas is called:
A) Condensation
B) Evaporation
C) Sublimation
D) Melting
Answer: C) Sublimation
Explanation: Sublimation is the process in which a solid changes directly into gas without passing through the liquid state, e.g., dry ice.
Conclusion:
These 50 moderate-high level RRB NTPC MCQs cover General Awareness, Reasoning, and Mathematics to help aspirants strengthen their exam preparation. Practicing such questions regularly improves problem-solving speed, accuracy, and confidence, essential for cracking competitive exams like RRB NTPC.