Defence GK Questions 2026

Renukoot in Sonbhadra district of Uttar Pradesh is known for aluminium, not for iron and steel. Renukoot is home to the Hindalco aluminium smelter, set up in the early 1960s near the Rihand dam, whose cheap hydroelectric power suits the huge electricity needs of aluminium smelting.

For a real object anywhere in front of it, a convex mirror always gives a virtual, erect and diminished image.

Red light has the longest wavelength in the visible spectrum, so glass slows it the least and bends it the least.

Maulana Azad was India's first Education Minister, serving in Jawaharlal Nehru's Cabinet from 1947 until his death in 1958. Azad was a scholar, journalist and Congress leader who had been the youngest president of the Indian National Congress in 1923 and its president again from 1940 to 1946.

Indian Standard Time is based on 82.5° E, and a place 5 hours behind lies 75° to the west of it, at 82.5° − 75° = 7.5° E. The Earth turns 360° in 24 hours, so local time changes by one hour for every 15° of longitude, or four minutes…

For three equal resistors R in parallel, 1/Rp = 1/R + 1/R + 1/R = 3/R, so Rp = R/3.

The brothers Harihara I and Bukka Raya I founded the Vijayanagara Empire in 1336, with its capital on the banks of the Tungabhadra at Hampi.

The force needed equals the rate at which the belt must give horizontal momentum to the falling sand: F = v × (dm/dt) = 2 × 0.1 = 0.2 N. Newton's second law, in its general form, says force equals the rate of change of momentum.

Fuji. Mount Fuji in Japan is a volcanic mountain, built up by layers of lava and ash, not by the folding of rock layers.

The rulers of Vijayanagara claimed to rule on behalf of the god Virupaksha, a form of Shiva and the guardian deity of Hampi.

These six ceremonial gates belong to the new Parliament House of India in New Delhi. The new Parliament building, part of the Central Vista project, was inaugurated in May 2023.

The four terrestrial planets do lie between the Sun and the asteroid belt, but they are dense, not light, and their weak gravity could not hold on to escaping gases.

Oyashio, Kuroshio, Alaska and Humboldt are currents of the Pacific Ocean, while Canaries, Labrador and Benguela flow in the Atlantic.

The Italian scientist Amedeo Avogadro proposed in 1811 that equal volumes of all gases, at the same temperature and pressure, hold the same number of molecules.

The Purga is a cold, snow-laden local wind of Siberia and the tundra of northern Russia. In winter, a strong high-pressure area builds over Siberia, which becomes one of the coldest places on Earth.

A plane mirror always forms an image that stands upright, cannot be caught on a screen, and has its left and right sides swapped.

A black hole forms when a very massive star collapses under its own gravity, and its pull becomes so strong that not even light can escape.

Article 46 asks the State to promote with special care the educational and economic interests of the weaker sections, in particular the Scheduled Castes and Scheduled Tribes.

All three projects, Baglihar, Dulhasti and Salal, stand on the Chenab river in Jammu and Kashmir. The Chenab is formed by the Chandra and Bhaga rivers, which meet at Tandi in Himachal Pradesh, and it flows through Jammu and Kashmir into Pakistan.

The 0° latitude is the Equator, the largest circle that can be drawn on the globe, so it is the longest parallel.