Defence GK Questions 2026

The Census defines a literate as a person aged seven or above who can both read and write with understanding in any language, so someone who can only read does not qualify.

A zeugen is a tabular ridge carved by wind abrasion in deserts, while a cirque is glacial and a stack is made by sea waves.

Free legal aid is a Directive Principle under Article 39A, and the Supreme Court has made it the duty of the police to inform the nearest Legal Aid Committee as soon as a person is arrested.

X-rays can pass through solid materials and their wavelength is close to the spacing of atoms, so they serve both purposes.

This is the statement that is not correct; the other three describe the benzene molecule correctly, and UPSC's official key also gives D. Benzene, C6H6, is a flat ring of six carbon atoms.

Statement 2 is the only incorrect one, because a compound always has a fixed composition, not a variable one. An element is the simplest form of matter and cannot be broken down into simpler substances by chemical reactions, so statement 1 is correct.

It is the Finance Ministry's nodal department for economic policy, at home and abroad, including the management of foreign exchange.

A cosmic ray physicist who founded the Physical Research Laboratory at Ahmedabad, he persuaded the government that a poor country needed space technology for communication, weather and education, set up the rocket launching station at Thumba and built the organisation that became the Indian Space Research Organisation.

Raman announced in 1928 that light scattered by a transparent medium contains components of changed wavelength, a shift that reveals the energy levels of the scattering molecules, and the Nobel Prize in Physics followed in 1930, making him the first Asian to receive a Nobel in a science.

His study of the characteristic X-rays of the elements showed that the nuclear charge, the atomic number, is the quantity that rises regularly from element to element, and the modern periodic law therefore states that properties are a periodic function of atomic number.

Ohm found that for a metallic conductor at a steady temperature the ratio of potential difference to current is a constant, the resistance, which is written as V equals I into R, so doubling the voltage doubles the current.

His experiments on garden pea, in which he followed single characters such as seed shape and flower colour through generations, gave the laws of dominance, segregation and independent assortment, and showed that inheritance works through discrete factors rather than a blending of parental traits.

Pressure applied to an enclosed liquid is transmitted equally and undiminished in every direction, so a small force on the narrow master cylinder of a brake creates a much larger force on the wide piston at each wheel, which is also how a hydraulic press and a hydraulic lift work.

Working on the observations of Tycho Brahe he found that a planet moves in an ellipse with the sun at one focus, that the line from the sun to the planet sweeps equal areas in equal times, and that the square of the orbital period is proportional to the cube…

By bombarding beryllium with alpha particles he obtained a penetrating radiation that could not be bent by electric or magnetic fields, and he showed it to consist of neutral particles of about the mass of a proton, for which he received the Nobel Prize in Physics.

Thomson. Working with cathode rays in a discharge tube in 1897, he showed that the rays were a stream of negatively charged particles far lighter than any atom, and he measured their charge to mass ratio, which established the electron as the first known subatomic particle.

In Einstein's special theory of 1905 the energy required to accelerate a body with mass rises without limit as its speed approaches that of light, so such a body can come close to but never reach the speed of light in vacuum, which is the same for every observer.

In Mughal times a mauza was a village, the basic unit of revenue records, not a rebellious territory. Mughal revenue records were kept village by village, and each village was called a mauza.

Statements 1, 2 and 4 are correct; tropical cyclones form in tropical, not middle, latitudes. Tropical cyclones form over warm seas with surface temperatures above about 27°C, which supply heat and moisture through evaporation and condensation.

Phreatophytes are deep-rooted plants that survive in dry regions by drawing water from the water table. The name comes from the Greek for 'well plant'.