NDA GK Questions 2026

Many sellers of an identical product, none of whom can change the price, is the definition of a perfectly competitive market.

The International Labour Organisation put it forward in the 1970s, asking that every person first have the essentials of a decent life.

Khema was a Buddhist nun, not a Jain teacher; the other three are well-known Jain acharyas. Khema was a queen of King Bimbisara of Magadha who became a disciple of the Buddha and joined the order of nuns.

Farming needs large areas of land, while most non-farm work, such as a shop, a dairy, transport or small manufacturing, can be carried out on very little land.

The pull of the Sun and Moon raises the tides, the regular rise and fall of the sea, but it is not counted among the forces that drive ocean currents.

In grasses the intercalary meristem lies at the base of the leaf blades and internodes, between tissues that are already mature.

Evaporation from the leaves pulls a continuous column of water up the xylem, and cohesion and adhesion keep that column from breaking.

Global dimming is the drop in sunlight reaching the ground, and the cooling that follows, caused by particles in the air.

The words 'ascending sense of reverence and descending sense of contempt' are Ambedkar's own description of how the caste order works.

In Sanskrit 'ishu' means arrow, and 'krit' and 'kara' mean one who makes, so both words name the arrow maker.

Both men were local leaders of 1857, one among the peasants of western Uttar Pradesh and the other among the tribals of Chotanagpur.

A green bond is a debt instrument whose money can be spent only on projects that help the environment or the climate.

It is the only set in which each organism eats the one before it, so energy passes along a single feeding line.

A water molecule has two hydrogen atoms of atomic mass one and one oxygen atom of atomic mass sixteen, so the masses are two and sixteen, which is a ratio of one to eight; this fixed ratio in every sample of water, whatever its source, is the classic illustration of…

Cholera is caused by the bacterium Vibrio cholerae and spreads through water and food contaminated with faecal matter, which is why it breaks out after floods and wherever sewage mixes with the water supply; typhoid, hepatitis A, dysentery and polio spread the same way.

Soap is the sodium or potassium salt of a long chain fatty acid.

A moderator slows down the fast neutrons released by fission so that they can cause further fission, and heavy water is the best of them because it slows neutrons well while absorbing very few; in Indian pressurised heavy water reactors it also serves as the coolant that carries heat away…

In reverse osmosis the water is pushed through a semi-permeable membrane at a pressure greater than its osmotic pressure, so the flow runs opposite to natural osmosis; the membrane lets water molecules through and holds back dissolved salts, heavy metals and most microbes, which is why reverse osmosis is also…

Bleaching powder is prepared by passing chlorine over dry slaked lime and is written as calcium oxychloride; in water it releases chlorine, which kills bacteria and other pathogens, and that is why it is used both for disinfecting water supplies and for bleaching cloth and paper.

Alum, that is aluminium sulphate or potash alum, is a coagulant: in water it forms a gelatinous hydroxide that gathers the fine clay and colloidal particles into heavier flocs, which then settle in the sedimentation tank and are removed, leaving clear water for filtration.