Railway GK Questions 2026

The packet’s density is 800 g divided by 1,000 cm³, which is 0.8 g/cm³, less than the density of both liquids.

For any position of a real object in front of a convex mirror, the image forms behind the mirror between P and F. A convex mirror bulges outward, and its focus and centre of curvature lie behind it.

The World Meteorological Organization has its headquarters in Geneva, Switzerland. The WMO is a specialised agency of the United Nations for weather, climate, water resources and related sciences.

The mascot of the 2018 FIFA World Cup, held in Russia, was a wolf named Zabivaka, a Russian word meaning "the one who scores".

Particles in a colloid are large enough to scatter a beam of light, which makes the path of the beam visible.

Refractive index is the ratio of the speed of light in air to its speed in the medium, so the speed in glass is c divided by 3/2, which is (2/3)c. The absolute refractive index of a medium is n = c/v, where c is the speed of light in…

The English naturalist published this book in London on 24 November 1859, setting out his theory of evolution by natural selection.

In 1913 the English physicist Henry Moseley showed that atomic number, not atomic mass, is the fundamental property of an element.

The 103rd Amendment Act, 2019 allowed reservation of up to 10 percent for the Economically Weaker Sections in educational institutions and in government jobs.

Relative humidity compares the water vapour actually present in the air with the most the air could hold at that temperature, so both figures are needed.

Parts of all three states drain into the Ganga through its tributaries. The Ganga basin is the largest river basin of India, covering about a quarter of the country's area.

Pyruvate, the ion of pyruvic acid (CH3COCOOH), is a three-carbon molecule. It is formed at the end of glycolysis, the first stage of respiration, which takes place in the cytoplasm of every living cell.

For a photon, energy equals momentum multiplied by the speed of light, E = pc, so a momentum of 10 MeV/c gives an energy of exactly 10 MeV.

In Census 2011, Scheduled Tribes made up about 94.4 percent of Mizoram's population, the highest share among all the states.

The Eight Degree Channel runs roughly along the 8 degree north latitude in the Arabian Sea and separates Minicoy, the southernmost island of Lakshadweep, from the Maldives.

Cotton soaks up sweat well, and as that sweat evaporates from the cloth it takes heat away from the body and keeps us cool.

The Portuguese were the first Europeans to reach Africa's coasts as traders, and their trading posts began the long story of European colonisation of the continent.

Citizenship is dealt with in Part II of the Constitution, Articles 5 to 11, and any citizenship law, including the Citizenship (Amendment) Act, falls under it.

Human cells, like all animal cells, have only a flexible plasma membrane on the outside and no rigid cell wall.

Article 21A, the right to education, was inserted by the Constitution (Eighty-sixth) Amendment Act, 2002, not by the Eighty-fifth.