Railway GK Questions 2026

The Orange River is the longest river of South Africa, about 2,200 km long. It rises in the Drakensberg mountains of Lesotho, flows west across South Africa and falls into the Atlantic Ocean at Alexander Bay.

The Panama Canal cuts across the narrow Isthmus of Panama in Central America and joins the Atlantic Ocean, through the Caribbean Sea, with the Pacific Ocean.

Indira Point, the southernmost point of India, lies at the southern tip of Great Nicobar Island in the Andaman and Nicobar Islands.

Guru Shikhar, about 1,722 m high on Mount Abu in the Sirohi district of Rajasthan, is the highest peak of the Aravalli Range.

King George V announced at the Delhi Durbar on 12 December 1911 that the capital of British India would move from Calcutta to Delhi.

The Jama Masjid of Delhi was built by Shah Jahan between 1650 and 1656 as the main mosque of his new capital, Shahjahanabad.

Under the tinkathiya system, European planters forced the peasants of Champaran in Bihar to grow indigo on 3 out of every 20 katthas (one bigha) of their land.

Potential difference is the work done to move a unit charge between two points, and its SI unit is the volt.

An iron, toaster, oven, kettle and heater all turn electrical energy into heat when current flows through a coil of high resistance.

A concave lens spreads the light rays slightly before they enter the eye, so the image moves back onto the retina.

Adrenaline is made by the adrenal glands, which sit like caps on top of the two kidneys. It is released in fear, anger or sudden danger, so it is called the "fight or flight" hormone.

The nucleus is called the master or control centre of the cell because it directs all the activities of the cell.

Brass is an alloy of copper and zinc, usually about 70 per cent copper and 30 per cent zinc. Adding zinc makes brass harder than pure copper, gives it a golden-yellow shine and helps it resist corrosion.

Bleaching powder gives off chlorine when it reacts with water, and this chlorine does the bleaching and kills germs. Bleaching powder is calcium oxychloride, CaOCl2, made by passing chlorine gas over dry slaked lime, Ca(OH)2.

Carbon dioxide reacts with lime water to form calcium carbonate, which does not dissolve, and its fine white particles make the water look milky.

Vitamin K is needed to make the clotting proteins, so without it even a small cut keeps bleeding. The liver uses vitamin K to make prothrombin and other clotting factors that turn blood into a clot at a wound.

The medulla oblongata is the breathing centre of the brain, which is why we keep breathing even while asleep. It is the lowest part of the hindbrain and joins the brain to the spinal cord.

The Great Stupa at Sanchi, in the Raisen district of Madhya Pradesh, is one of the oldest Buddhist monuments in India.

Ghoomar is a folk dance of Rajasthan performed by women in long, flared skirts called ghaghras, who spin gracefully in circles.

Article 84 lists who can become a Member of Parliament. A candidate must be a citizen of India, must make an oath or affirmation in the form set out in the Third Schedule before a person authorised by the Election Commission, must be at least 30 years old for the…