These essential MCQ questions are selected from the most important topics in Railways RRB Group D examinations 2026. Sections include General Science, Indian History, Geography, Current Affairs and General Awareness. For truely unlimited daily MCQ practice, visit Vooo AI Education.
🚂 Railways Group D General Knowledge
1Indian Railways is owned and operated by whom?
Answer: B — Government of India
Indian Railways is owned and operated by the Government of India under the Ministry of Railways. It is one of the world's largest railway networks by size and passenger volume.
Indian Railways is owned and operated by the Government of India under the Ministry of Railways. It is one of the world's largest railway networks by size and passenger volume.
2Which is the hardest natural substance on Earth?
Answer: A — Diamond
Diamond is the hardest known natural material, scoring 10 on the Mohs hardness scale. It is a form of carbon where atoms are arranged in a diamond cubic crystal structure.
Diamond is the hardest known natural material, scoring 10 on the Mohs hardness scale. It is a form of carbon where atoms are arranged in a diamond cubic crystal structure.
3The first Indian to go to space was:
Answer: B — Rakesh Sharma
Rakesh Sharma was the first Indian citizen to travel to space. He flew aboard the Soviet Soyuz T-11 spacecraft on 3 April 1984 as part of the Soviet Interkosmos programme.
Rakesh Sharma was the first Indian citizen to travel to space. He flew aboard the Soviet Soyuz T-11 spacecraft on 3 April 1984 as part of the Soviet Interkosmos programme.
4Water boils at what temperature at sea level?
Answer: B — 100°C
Water boils at 100°C (212°F) at standard atmospheric pressure (1 atm) at sea level. At higher altitudes where air pressure is lower, water boils at a lower temperature.
Water boils at 100°C (212°F) at standard atmospheric pressure (1 atm) at sea level. At higher altitudes where air pressure is lower, water boils at a lower temperature.
5Which state has the longest coastline in India?
Answer: C — Gujarat
Gujarat has the longest coastline among Indian states at approximately 1,600 km. India's total coastline is about 7,516 km including the mainland and island territories.
Gujarat has the longest coastline among Indian states at approximately 1,600 km. India's total coastline is about 7,516 km including the mainland and island territories.
6Who invented the telephone?
Answer: B — Alexander Graham Bell
Alexander Graham Bell is credited with inventing and patenting the first practical telephone in 1876. He made the first successful call to his assistant Thomas Watson.
Alexander Graham Bell is credited with inventing and patenting the first practical telephone in 1876. He made the first successful call to his assistant Thomas Watson.
7Dandi March was led by which leader?
Answer: A — Mahatma Gandhi
Mahatma Gandhi led the Dandi March (Salt March) from 12 March to 5 April 1930. He marched 241 miles to protest against British salt tax laws.
Mahatma Gandhi led the Dandi March (Salt March) from 12 March to 5 April 1930. He marched 241 miles to protest against British salt tax laws.
8The chemical symbol for gold is:
Answer: C — Au
The chemical symbol for gold is Au, from the Latin word "Aurum." Gold has atomic number 79 and is a dense, soft, shiny and malleable metal used in jewellery and electronics.
The chemical symbol for gold is Au, from the Latin word "Aurum." Gold has atomic number 79 and is a dense, soft, shiny and malleable metal used in jewellery and electronics.
9Which organ filters blood in the human body?
Answer: C — Kidney
The kidneys filter blood and remove waste products and excess water as urine. Each human kidney contains about one million tiny filtering units called nephrons.
The kidneys filter blood and remove waste products and excess water as urine. Each human kidney contains about one million tiny filtering units called nephrons.
10India's national animal is the:
Answer: C — Bengal Tiger
The Bengal Tiger (Panthera tigris tigris) is India's national animal. It was chosen in 1973 when Project Tiger was launched to protect the endangered species across India's tiger reserves.
The Bengal Tiger (Panthera tigris tigris) is India's national animal. It was chosen in 1973 when Project Tiger was launched to protect the endangered species across India's tiger reserves.
Ready to crack Railways Group D 2026?
Get free daily RRB Group D GK MCQs. Unlimited practice starts from just ₹120/month.
See Plans — Starts at ₹120