Defence GK Questions 2026

Walls are whitewashed with a solution of slaked lime, calcium hydroxide, which is an inorganic compound; quicklime itself is not applied, and the shiny layer comes from Ca(OH)₂, not CaO.

The monks who went south were the followers of Bhadrabahu, who later became the Digambaras, not the Shvetambaras.

Magnesium ribbon burns in air with a dazzling white flame, giving off heat and light and leaving a white powder of magnesium oxide.

Amuktamalyada was written in Telugu by Krishnadevaraya, the greatest ruler of the Tuluva dynasty of Vijayanagara. Krishnadevaraya ruled from 1509 to 1529.

Both statements reverse the two approaches: empirical knowledge aims to be value-free, while normative knowledge is value-loaded. The empirical approach studies politics as it is.

An atomic clock keeps time by locking onto the fixed frequency of radiation that makes atoms such as cesium-133 or rubidium jump between two energy levels.

Lithium is so light that it floats on kerosene or paraffin oil, so it is kept coated in petroleum jelly or paraffin wax, or under an inert gas, instead of under oil.

A Van de Graaff generator is an electrostatic machine that builds up a very large static charge on a hollow metal sphere, raising it to millions of volts.

Jordan grew out of the British Mandate after the First World War, but it is not landlocked because it touches the Gulf of Aqaba.

Starlight is bent again and again by layers of air of changing density, so its path and brightness keep shifting and the star seems to twinkle.

The focal length is 10 cm, and an object between F and C of a concave mirror gives a real image beyond C, in front of the mirror.

X-rays are electromagnetic waves made of photons, which carry no electric charge, so electric and magnetic fields cannot bend them.

The Committee on Welfare of Other Backward Classes is a joint committee whose Chairperson is appointed by the Speaker of the Lok Sabha from among its members.

The TDB works under the Department of Science and Technology and it is the body that signed the agreement with ideaForge Technology Limited of Mumbai for support under the Research Development and Innovation Fund.

YETI is designed for an operating altitude of up to 6,500 metres above mean sea level, which is what allows it to be considered for high-altitude work in the mountains, and its weather-resistant build is also meant for deserts and marine conditions.

YETI is designed to lift payloads of up to 200 kg, and by a neat coincidence the same figure is its targeted range in kilometres, which makes the pair easy to remember together.

That is the support the Technology Development Board has agreed to extend to ideaForge Technology Limited under the Research Development and Innovation Fund, and it comes in the form of debt financing.

Across the Indian Navy's tenure, the activities of CTF 154 added up to more than 7,800 hours of training, with personnel from 39 countries taking part.

India's association with the Combined Maritime Forces came in two steps: it first joined as an Associate Partner in 2022 and then took up full membership in 2023.

The Combined Maritime Forces is a partnership of 47 nations, and CTF 154 is the one task force within it that is given over wholly to training, running professional courses and capacity building so that member navies can work with one another at sea.