Railway GK Questions 2026

A body that slides down a smooth slope turns all of its potential energy mgh into translational kinetic energy and reaches the bottom with a speed equal to the square root of 2gh.

The force on a current carrying conductor kept in a magnetic field is given by F equal to B I L sin theta, where theta is the angle between the direction of the current and the direction of the field.

The Irula, also written Irular, are one of the main tribal communities of Tamil Nadu and live mostly in the Nilgiri hills and in the districts along the border with Kerala.

The law of conservation of linear momentum follows straight from Newton's second law: the rate of change of the momentum of a system equals the net external force acting on it, so when that force is zero the total momentum stays the same in size and in direction.

Dynamic viscosity measures how strongly a fluid resists flowing, and in the centimetre gram second system it is measured in poise, a unit named after the French physician Jean Louis Marie Poiseuille, who studied the flow of blood in narrow tubes.

In 1820 the Danish scientist Hans Christian Oersted saw that a compass needle kept near a wire swung aside the moment a current flowed through the wire, and swung the other way when the current was reversed.

The Jammu and Kashmir Official Languages Act, 2020 gives the union territory five official languages: Kashmiri, Dogri, Urdu, Hindi and English.

Once the athlete's feet leave the ground they move as a projectile, and the horizontal distance covered, called the range, is given by R equal to u squared into sin 2 theta divided by g. The range is largest when sin 2 theta has its greatest value of one, which…

In early Buddhist art the Buddha was never shown in human form, so the events of his life were carved as symbols, and the stupa stands for his mahaparinirvana, that is his death at Kushinagar.

The loudness or intensity level of sound is measured in decibels (dB), a unit named after Alexander Graham Bell.

C. R. Das was the Calcutta barrister who defended Aurobindo Ghosh in the Alipore bomb case, gave up a large practice for the non-cooperation movement, and founded the Swaraj Party with Motilal Nehru to contest the legislative councils.

Milkha Singh was a sprinter who won the four hundred metres gold at the Commonwealth Games of 1958 and at the Asian Games, and who finished fourth in the four hundred metres final at the Rome Olympics of 1960.

Kurien built the cooperative dairy at Anand in Gujarat, gave the country the Amul brand and headed the National Dairy Development Board, whose Operation Flood turned India into a large milk producer.

Sarabhai set up the Physical Research Laboratory at Ahmedabad, persuaded the government that a developing country needed space technology for communication and weather, and built the Thumba Equatorial Rocket Launching Station in Kerala, so he is called the father of the Indian space programme.

Kalam worked on the SLV-3 launch vehicle and then led the Integrated Guided Missile Development Programme, out of which the Agni, Prithvi, Trishul, Akash and Nag missiles came, and that work gave him the name Missile Man of India.

The historian V. A. Smith first described Samudragupta as the Napoleon of India, because of the long list of kings and republics he subdued, recorded in the Allahabad pillar inscription, or Prayag Prashasti, composed by his court poet Harisena.

He organised the Khudai Khidmatgar, the servants of God, also known as the Red Shirts, in the North West Frontier Province, and he held to non-violence so completely that he became known as the Frontier Gandhi, or Sarhadi Gandhi.

Valentine Chirol, a British journalist, used the phrase Father of Indian Unrest for Tilak in his writing on Indian politics, and Tilak sued him for libel in England.

Naoroji was a founder of the Indian National Congress, its President three times, and the first Indian to be elected to the British House of Commons.

Naidu was a poet in English whose collections include The Golden Threshold and The Bird of Time, and the lyrical quality of her verse earned her the name Nightingale of India, or Bharat Kokila.