Defence GK Questions 2026

These are the only two elements that are liquid at standard room temperature and pressure: mercury is a metal and bromine is a non-metal.

Sodium carbonate, called washing soda in its hydrated form Na₂CO₃·10H₂O, removes both temporary and permanent hardness of water. Hard water contains dissolved calcium and magnesium salts, which stop soap from lathering.

The Social Market Economy, Soziale Marktwirtschaft, was the model on which West Germany rebuilt its economy after the Second World War.

Castro came to power in Cuba only in 1959 and was not among the founders of the Non-Aligned Movement; he became prominent in it later and chaired the 1979 Havana summit.

Abhinav Bindra won the men's 10 m air rifle event at the 2008 Beijing Olympics on 11 August 2008, India's first individual Olympic gold.

Retired Karnataka High Court judge K. S. Puttaswamy challenged the Aadhaar scheme in 2012, and his petition led to the 2017 ruling that privacy is a Fundamental Right.

The famous line opens the Preamble to the Constitution of UNESCO, adopted in London in November 1945.

H₂S is a colourless gas with the familiar smell of rotten eggs, and the human nose can detect it even in very small amounts.

This statement is wrong: Shola forests grow in the high hills of South India, in the Western Ghats, not in the Himalaya.

The Gandatindu Jataka is one of the Jataka tales, the stories of the Buddha's earlier births, which were composed in Pali and preserved in the Buddhist canon.

Nylon 6 is made from a single monomer, caprolactam, whose ring opens on heating and joins up into long polyamide chains.

This Act provided for a Federal Court, which was set up at Delhi in October 1937 to settle disputes between the Centre and the provinces.

The Swedish chemist Berzelius proposed around 1813–1814 that each element be written with one or two letters taken from its name, the system still used today.

A soda-acid extinguisher holds a solution of sodium hydrogen carbonate (baking soda) and a small bottle of sulphuric acid; when the two mix, carbon dioxide is released.

Article 51 says nothing about UN peacekeeping forces; it is a Directive Principle on the promotion of international peace and security.

India signed a contract worth about 5.4 billion US dollars with Russia in October 2018 for five squadrons of the S-400 Triumf long-range surface-to-air missile system.

Dr. B. R. Ambedkar called Article 32 the very soul and heart of the Constitution because it makes the Fundamental Rights enforceable.

By the law of demand, a normal good is bought less when its own price rises, while the effect on the other good depends on two forces pulling in opposite directions.

This statement is wrong: in 1956 Dr. Muthulakshmi Reddy received the Padma Bhushan, not the Bharat Ratna. Muthulakshmi Reddy (1886–1968) of the Madras Presidency broke several barriers.

Nitrogen gas is the element itself in a very stable form, and plants cannot take it up directly from the soil or the air, so it is not used as a fertilizer.