- Who is known as the “Father of the Indian Constitution”?
Answer: Dr. B.R. Ambedkar
Explanation: Dr. B.R. Ambedkar was the Chairman of the Drafting Committee of the Indian Constitution and played a pivotal role in its formulation.
- Which planet is known as the “Red Planet”?
Answer: Mars
Explanation: Mars appears red due to the presence of iron oxide on its surface.
- What is the capital of Sikkim?
Answer: Gangtok
Explanation: Gangtok is the largest city and the capital of the northeastern state of Sikkim in India.
- Who was the first Governor-General of independent India?
Answer: Lord Mountbatten
Explanation: Lord Mountbatten served as the last Viceroy and the first Governor-General of independent India until June 1948.
- What is the SI unit of electric current?
Answer: Ampere
Explanation: The ampere is the SI unit used to measure electric current.
- Which is the longest river in India?
Answer: The Ganga
Explanation: The Ganga River is the longest river in India, stretching approximately 2,525 km.
- Who discovered the law of gravitation?
Answer: Sir Isaac Newton
Explanation: Newton’s law of gravitation explains the gravitational force between two masses.
- What is the currency of Japan?
Answer: Yen
Explanation: The yen is the official currency of Japan.
- Which gas is most abundant in Earth’s atmosphere?
Answer: Nitrogen
Explanation: Nitrogen constitutes approximately 78% of Earth’s atmosphere.
- Who was the first woman Prime Minister of India?
Answer: Indira Gandhi
Explanation: Indira Gandhi served as the Prime Minister of India from 1966 to 1977 and again from 1980 to 1984.
- What is the full form of CPU?
Answer: Central Processing Unit
Explanation: The CPU is the primary component of a computer that processes instructions.
- Who wrote the national song “Vande Mataram”?
Answer: Bankim Chandra Chatterjee
Explanation: “Vande Mataram” was composed in Sanskrit and appears in the novel Anandamath.
- Which Indian state is the largest by area?
Answer: Rajasthan
Explanation: Rajasthan covers an area of 342,239 square kilometers, making it the largest state in India.
- What is the chemical symbol for gold?
Answer: Au
Explanation: The symbol “Au” comes from the Latin word “Aurum,” meaning gold.
- Who is known as the “Missile Man of India”?
Answer: Dr. A.P.J. Abdul Kalam
Explanation: Dr. Kalam contributed significantly to India’s missile and space programs.
- What is the smallest bone in the human body?
Answer: Stapes
Explanation: The stapes is a bone in the middle ear and is the smallest in the human body.
- What is the boiling point of water at sea level?
Answer: 100°C
Explanation: Water boils at 100°C under standard atmospheric pressure.
- Which is the first biosphere reserve in India?
Answer: Nilgiri Biosphere Reserve
Explanation: Established in 1986, it covers parts of Tamil Nadu, Kerala, and Karnataka.
- Who invented the telephone?
Answer: Alexander Graham Bell
Explanation: Bell patented the telephone in 1876.
- What is the study of fossils called?
Answer: Paleontology
Explanation: Paleontology is the scientific study of life in the geologic past through fossils.
- Which Mughal emperor built the Taj Mahal?
Answer: Shah Jahan
Explanation: The Taj Mahal was built by Shah Jahan in memory of his wife Mumtaz Mahal.
- What is the capital of Australia?
Answer: Canberra
Explanation: Canberra is the political and administrative center of Australia.
- Who is known as the “Iron Man of India”?
Answer: Sardar Vallabhbhai Patel
Explanation: Patel was instrumental in the integration of princely states into India.
- Which is the largest organ in the human body?
Answer: Skin
Explanation: The skin is the body’s largest organ, serving as a protective barrier.
- Which Indian scientist won the Nobel Prize in Physics in 1930?
Answer: C.V. Raman
Explanation: He was awarded for his work on the scattering of light, known as the Raman Effect.
These questions cover a range of topics, including Indian history, geography, science, and current affairs, and are tailored to help aspirants prepare effectively for the RRB NTPC 2025 exam.