Defence GK Questions 2026

In uniform circular motion the speed stays the same, but the direction changes at every point, so the velocity keeps changing.

Antibodies are made by B-lymphocytes, a kind of white blood cell, after they meet a foreign antigen. When a germ or other foreign substance enters the body, B-lymphocytes that recognise its antigen multiply and turn into plasma cells.

Vitamin B1 is the chemical called thiamin (also spelt thiamine), the first of the B-complex vitamins to be identified. Thiamin is a water-soluble vitamin that helps the body turn carbohydrates into energy and keeps nerves and the heart working properly.

Statements III and IV describe the ionosphere and the mesosphere correctly, while I and II mix up facts about the troposphere and the ozone layer.

The Caucasus Mountains run for about 1,100 kilometres from the eastern shore of the Black Sea to the western shore of the Caspian Sea, forming a wall across the isthmus between the two seas.

The limestone hills around Sukkur and Rohri in Sindh contain rich beds of fine chert, a hard, flint-like stone. Excavations there have found hundreds of Harappan quarry and workshop sites, where long, sharp chert blades were struck in large numbers and sent to towns across Sindh, including Mohenjodaro.

Ayodhya is not counted among the centres of the Revolt of 1857; in Awadh the rising was centred on Lucknow, the capital.

This statement is incorrect because the Constitution places no bar on re-electing a Vice-President; he may be elected any number of times.

Korkai, near the mouth of the Tamraparni river in the present Thoothukudi district of Tamil Nadu, was the chief port of the early Pandyas.

This statement is incorrect because a Constitution Amendment Bill must be passed by each House of Parliament separately by the special majority, and Article 108 joint sittings do not apply to it.

A bicameral state legislature has two Houses: the Legislative Assembly (Vidhan Sabha) and the Legislative Council (Vidhan Parishad). Andhra Pradesh, Telangana, Bihar and Uttar Pradesh all have a Legislative Council, along with Maharashtra and Karnataka.

The Kushanas, who ruled a vast empire from Central Asia to the Ganga valley in the first centuries CE, presented their kings as god-like figures, and the clearest evidence of this comes from their coins and statues.

Mercury is small and very close to the Sun, so its weak gravity and the intense solar heat and wind have stripped away almost all gas; it has only a trace exosphere, which is why it is described as having no atmosphere.

The Union excise levied on petrol and diesel has three parts. Basic Excise Duty is an ordinary Union tax, so it goes into the divisible pool and a share of it reaches the states as recommended by the Finance Commission under Article 270.

Point Calimere, also called Kodiakkarai, lies in the Nagapattinam district of Tamil Nadu, a state, where the Coromandel Coast turns west towards Palk Strait.

The National Institute of Disaster Management grew out of the National Centre for Disaster Management, set up in 1995 at the Indian Institute of Public Administration in New Delhi, which was renamed NIDM in 2003.

The winter solstice of the Northern Hemisphere falls on about 22 December. On that day the Sun's rays fall vertically on the Tropic of Capricorn, and the North Pole is tilted away from the Sun.

The India Integrated Coastal Zone Management Project was launched by the Ministry of Environment and Forests in 2010 with World Bank support.

Colostrum is the thick, yellowish first milk a mother produces in the first few days after childbirth.

When a magnet moves inside a coil, the magnetic flux linked with the coil changes, and this change produces an electromotive force and a current.