CDS GK Questions 2026

Mass is the same everywhere, but weight changes with g, so only statement II holds. Inertial mass measures how much a body resists a change in motion (F = ma); gravitational mass measures how strongly gravity pulls it.

A mirage forms when light from the sky bends through hot, less dense air near the ground and is finally totally internally reflected.

Bose wrote The Indian Struggle, 1920–1934 in Europe, where he lived in the mid-1930s for medical treatment. The book was first published in London in 1935.

Constant velocity means both the speed and the direction stay the same, so the speed cannot change. Velocity is a vector: it has a magnitude, the speed, and a direction.

The pericycle is a layer of cells around the vascular cylinder of the root and stem; it is not part of xylem or phloem.

Radiant heat is infrared electromagnetic radiation, so it travels in straight lines at the speed of light. Heat moves in three ways.

Article 79 says that there shall be a Parliament for the Union which shall consist of the President and two Houses.

Marie Curie discovered radium; the first two pairs have their discoveries swapped. Marie Curie and Pierre Curie discovered the radioactive elements polonium and radium in 1898, and Marie Curie went on to win Nobel Prizes in both physics (1903) and chemistry (1911).

A playa is the flat, fine-grained floor of a shallow desert basin that holds water only for a short time after rain.

Both changes let more molecules escape from the surface each second. Evaporation is a surface process: only molecules at the surface with enough energy break away into the air.

In 1639 the English Company obtained a grant of land at Madraspatam on the Coromandel coast and built Fort St. George there.

Nichrome has a high resistivity and does not oxidise easily when red hot, so it is the standard heating element.

Charge equals current multiplied by time, and here that is 15 A × 600 s = 9000 C. Electric current is the rate of flow of charge, I = Q/t, so Q = I × t. The SI unit of charge, the coulomb, is the charge carried by one ampere…

Ligaments are bands of dense connective tissue that join one bone to another at a joint. Ligaments are rich in tough, slightly elastic fibres, so they hold the bones of a joint together while still allowing movement.

The Vajji mahajanapada was a gana-sangha, ruled by an assembly of clan chiefs rather than by a single king. Of the sixteen mahajanapadas named in Buddhist texts such as the Anguttara Nikaya, most were monarchies, but Vajji and Malla were ganas or sanghas.

One parsec equals about 2,06,265 astronomical units, which rounds to 2 × 10⁵ A.U.

At the top of its flight all the kinetic energy of the ball has turned into gravitational potential energy. The mass is 350 g, that is 0·35 kg.

This is the declared theme of the ninth edition of the India-Brazil-South Africa Maritime Exercise, which aims at collective maritime security and at preparing the three navies to deal with challenges at sea.

IBSAMAR has been held once in two years since that year, under the India-Brazil-South Africa framework, and has become a settled platform for joint training and for sharing operational practices among the three navies.

INS Tarkash, a frontline guided missile stealth frigate of the Indian Navy, has been sent on an overseas deployment to South Africa to join the ninth edition of the India-Brazil-South Africa Maritime Exercise.