Railway GK Questions 2026

Gravitational waves are ripples in space-time thrown out by violent events such as the merger of two black holes, and they follow from the general theory of relativity that Einstein published in 1915, with the prediction of the waves set out in 1916.

Fusion is the joining of two light nuclei into a heavier one, with a neutron or other products released and a large amount of energy appearing because the mass of the product is slightly less than the mass of the reactants; in ITER the reaction fuses deuterium and tritium into…

A hydrogen bomb, also called a thermonuclear bomb, uses a fission explosion only as a trigger; the main energy comes from the fusion of the heavy hydrogen isotopes deuterium and tritium into helium at temperatures of millions of degrees, which is why the process is described as thermonuclear or thermal…

This institute of the Department of Atomic Energy is the national centre for plasma and fusion research, it houses the domestic agency ITER-India that supplies India share of the machine, and it operates India own tokamaks Aditya and SST-1, the Steady State Superconducting Tokamak.

ITER is coming up at Saint-Paul-les-Durance in the Cadarache area of southern France, and its seven partners are the European Union, China, India, Japan, Russia, South Korea and the United States; the name is the Latin word for the way.

These are the two general purpose detectors on the LHC ring, and in July 2012 both independently reported a new particle of about 125 giga-electronvolts that matched the Higgs boson, the particle linked to the field that gives mass to other particles; the Nobel Prize in Physics of 2013 went…

The European Organization for Nuclear Research, founded in 1954, has its campus at Meyrin on the outskirts of Geneva in Switzerland, and because its tunnels run under the border, parts of the laboratory lie in France as well.

The Large Hadron Collider occupies a circular tunnel about 27 kilometres around, lying roughly 100 metres below the ground on the Swiss-French border near Geneva, and it is the largest and most powerful particle accelerator ever built; the tunnel was originally dug for an earlier CERN machine, the Large Electron-Positron…

Keoladeo Ghana National Park at Bharatpur, once the duck shooting reserve of the Bharatpur rulers, was listed in 1981 and is also a World Heritage Site famous for its winter migratory birds; the Sambhar salt lake was listed in 1990 and attracts flamingos.

Nakki lake lies at Mount Abu, the only hill station of Rajasthan, in Sirohi district, and the local story that it was dug out with nails gives it its name; Toad Rock stands on its edge and the ashes of Mahatma Gandhi were immersed in it.

The correct answer is A, Maharana Jai Singh of Mewar, who dammed the Gomti river in the late seventeenth century to make the lake in Udaipur district; it is the largest artificial freshwater lake of Rajasthan and is surrounded by the Jaisamand wildlife sanctuary, with marble pavilions and the Hawa…

The lake spreads over the districts of Jaipur, Nagaur and Ajmer, is fed by the Mendha, Rupangarh, Khari and Khandel streams, has been worked for salt for centuries and was declared a Ramsar site in 1990, drawing flamingos in winter.

The Mahi enters Rajasthan from Madhya Pradesh in Banswara district, where it is dammed as the Mahi Bajaj Sagar, a joint project of Rajasthan and Gujarat; the river is called the Ganga of Vagad and receives the Som, the Jakham and the Anas.

The Bisalpur dam stands on the Banas in Tonk district and supplies drinking water to Jaipur, Ajmer, Tonk and the towns between them, which makes it the most important water project of eastern Rajasthan.

It rises in the Shivalik hills near Kalka, enters Rajasthan at Talwara in Hanumangarh district and loses itself in the sands near Suratgarh and Anupgarh, so it never reaches the sea and is called the dead river; its dry bed is known locally as the Nali, and Harappan sites such…

The Luni begins in the Naga hills near Ajmer and is called the Sagarmati in its first stretch; after the Sarsuti joins it near Govindgarh the combined stream is called the Luni, and it finally spreads into the Rann of Kutch in Gujarat.

The Banas runs about 480 kilometres north-east across the state and joins the Chambal at Rameshwar Ghat in Sawai Madhopur, gathering the Berach, Kothari, Khari, Dai, Morel and Kalisil on the way, and its name means the hope of the forest.

It rises at Janapav hill near Mhow in the Vindhyan range of Madhya Pradesh, enters Rajasthan in Chittorgarh district and flows past Kota, Bundi, Sawai Madhopur, Karauli and Dholpur to join the Yamuna, and because it is fed by the heavier rainfall of the Malwa plateau it carries water through…

The three language formula, recommended by the Kothari Commission and adopted in the National Policy on Education, places the mother tongue or the regional language first, Hindi second and English third in Hindi-speaking states, while non-Hindi states teach the regional language, Hindi and English; in practice some states substitute another…

The movement forced the government to appoint the States Reorganisation Commission under Fazl Ali, whose report of 1955 led to the States Reorganisation Act of 1956 and to a map drawn largely along language lines.