Defence GK Questions 2026

The earth is flattened at the poles, so the distance from the centre is least there, and since g varies inversely as the square of that distance, g is largest at the poles.

Pressure is thrust per unit area, so its unit is one newton per square metre, and this unit is named the pascal after Blaise Pascal.

Sambhar Lake lies west of Jaipur in Rajasthan, has no outlet to the sea and loses water only by evaporation, so salts brought in by seasonal streams accumulate in it.

The Montreux Record names sites already on the Ramsar list where the ecological character has changed, is changing or is likely to change because of pollution, drainage, encroachment or other human interference.

Designated in 2008 in Gujarat, it covers the largest area of any biosphere reserve in India, taking in the marine national park and sanctuary of the gulf together with its islands, coral reefs, mangroves and mudflats, which support corals, dugongs, dolphins and large numbers of migratory shorebirds.

The core zone is the innermost and the only strictly protected part of a biosphere reserve, usually already notified as a national park or a wildlife sanctuary.

Both were placed on the Ramsar list in 1981 and were the first Indian wetlands to be so recognised.

The United Nations Educational, Scientific and Cultural Organization launched the Man and the Biosphere Programme in 1971 as an intergovernmental scientific programme to improve the relationship between people and their environment, and the sites recognised under it form the World Network of Biosphere Reserves.

Loktak, in Manipur, is the largest freshwater lake of north-east India, and its surface carries phumdis, thick floating mats of vegetation, soil and organic matter that rise and fall with the water level.

The Nilgiri Biosphere Reserve, spread across Tamil Nadu, Kerala and Karnataka in the Western Ghats, was designated in 1986 as the first biosphere reserve of India, and in 2000 it also became the first Indian reserve to be included in the UNESCO World Network of Biosphere Reserves.

The Ramsar Convention was signed on 2 February 1971, and that anniversary is observed each year as World Wetlands Day to draw attention to the services wetlands provide, such as flood control, groundwater recharge, water purification and habitat for migratory birds.

The Convention on Wetlands of International Importance was signed on 2 February 1971 in the Iranian city of Ramsar, on the shore of the Caspian Sea, which gave the treaty its popular name.

The Integrated Guided Missile Development Programme was approved in 1983 and run by the DRDO under Dr A.P.J. Abdul Kalam, which is why he is called the Missile Man of India.

Because of the gravitational pull of the moon and the sun, together with the centrifugal effect of the earth's rotation, most coasts see the sea rise and fall twice in a day.

In the summer months the tropical easterly jet stream blows over peninsular India at about 14°N, some 15 km above the ground, and it moves from east to west.

Ceres is the only dwarf planet that orbits inside the main asteroid belt, the ring of rocky bodies between Mars and Jupiter.

The correct answer is Brigadier Sanjay Kumar Mishra, Head of Ophthalmology at the Army Hospital (Research and Referral), Delhi Cantonment, whose team carried advanced phacoemulsification, vitreoretinal and glaucoma equipment across mountainous terrain to reach Tangdhar.

Tangdhar lies in Kupwara district of Jammu and Kashmir, a shelling-prone area close to the Line of Control, and the camp there had to be run from an underground operation theatre for that reason.

Surgeons of the Armed Forces Medical Services completed 220 sight-restoring surgeries during the two-day mega eye surgical camp at Tangdhar in Kupwara district of Jammu and Kashmir, held on 24 and 25 September 2026 under Operation Drishti.

MAHASAGAR is the name given to India's maritime vision, and the QUAD-at-Sea Ship Observer Mission is described as an expression of it, alongside the Indian Coast Guard's own commitment to collective engagement and a secure maritime environment in the Indo-Pacific.