Defence GK Questions 2026

The Rihla, meaning journey, is the Arabic travel book of Ibn Battuta, the Moroccan traveller from Tangier who reached India in 1333.

As one climbs, air pressure falls, so each breath delivers oxygen at a lower partial pressure and less of it passes from the lungs into the blood.

A compound always has a fixed composition by mass, so a variable composition is a property of mixtures, not compounds.

The remark that the commerce of India is the commerce of the world, and that whoever commands it exclusively is the dictator of Europe, is attributed to Peter the Great, Tsar of Russia from 1682 to 1725.

Greta Thunberg, born in Stockholm in 2003, is a Swedish climate activist who became the face of the youth climate movement.

Under Article 243D, seats for Scheduled Castes and Scheduled Tribes in every Panchayat are reserved in proportion to their share of the population of that Panchayat area, so the statement that reservation has nothing to do with population is wrong.

Gopal Hari Deshmukh (1823–1892) of Maharashtra wrote under the pen name Lokahitawadi, meaning one who works for the good of the people, and the name stuck to him.

India follows a single standard time, Indian Standard Time, for the whole country, and it is ahead of GMT, not behind it.

During El Nino the trade winds of the Pacific weaken or even reverse, so a steady flow of these winds is not one of its results.

The munjaniq, also written manjaniq, was a siege engine that hurled heavy stones at fort walls, that is, a catapult.

Bhutan is the country that officially adopted Gross National Happiness, rather than economic output alone, as the measure of its progress.

The Amsterdam-St. Paul Plateau is a raised area of the ocean floor in the southern Indian Ocean, named after the French islands of Amsterdam and Saint-Paul that rise from it.

Gupta inscriptions show the kings using grand imperial titles and also religious epithets that linked them with the gods.

The magnetic force on a moving charge is F = q(v × B), and only an upward field turns a westward-moving positive charge towards the north.

Chemical weathering is the breakdown of rocks through reactions such as solution, oxidation, carbonation and hydration, and all of these need water.

The law of conservation of mass, stated by Antoine Lavoisier in 1789, says that in a chemical reaction mass is neither created nor destroyed.

When copper is left in moist air for a long time, it slowly reacts with oxygen, water vapour and carbon dioxide.

The South Atlantic Drift is part of the West Wind Drift, the cold eastward flow that circles Antarctica in the belt of the westerlies, around 40° to 50° south.

The Charter of the United Nations was drawn up at the United Nations Conference on International Organization held in San Francisco, USA, from April to June 1945, and was signed there on 26 June 1945.

On a hot day the air just above a road or desert sand is much hotter, and so optically rarer, than the air higher up.