Static general knowledge makes up about 90% of Part B of the NDA General Ability Test, about 360 of its 400 marks. The NDA & NA (II) 2026 notice divides it into five sections: Physics (about 25%), Chemistry (about 15%), General Science (about 10%), History, Freedom Movement etc. (about 20%) and Geography (about 20%). Half of Part B is science. Physics covers matter, motion, gravitation, heat, sound, light, magnetism, electricity and the working of everyday devices such as the siphon, pressure cooker, periscope and safety fuse. Chemistry covers changes of matter, elements and compounds, common gases, acids, bases and salts, carbon, fertilizers and the materials used to make soap, glass, cement and gunpowder. General Science covers cells, the human body, diseases, diet, the solar system and eminent scientists. Section D spans Indian history and culture, the freedom movement, the Constitution, Five Year Plans, Panchayati Raj and world history from the Renaissance to the Russian Revolution. Geography covers the Earth, rocks, oceans, the atmosphere and climate, and India's resources, industries, ports and trade. This page holds GK24's topic-wise GK notes for NDA, in English and Hindi, written as short facts and tables. Read a topic, then solve its quiz and previous-year questions on this site.
After fertilization, the fruit and the seed are produced by
After fertilisation the ovary of the flower grows into the fruit, and each ovule inside it develops into a seed.
Read the full explanation →Which one among the following districts of Eastern India held a referendum in 1947 to decide whether or not to join Pakistan ?
Sylhet, then a Muslim-majority district of Assam, held a referendum in July 1947, and its people voted to join East Bengal, which became part of Pakistan.
Read the full explanation →Which among the following statements with respect to carbon is/are correct?
1. Carbon forms the basis for all living organisms and many things we use
2. Carbon shows tetra-valency and the property of catenation
3. Carbon forms covalent bonds with itself and other elements
4. Carbon forms compounds containing triple and tetra bonds between carbon atoms
Select the correct answer using the code given below :
Statements 1, 2 and 3 are true, but carbon never forms a quadruple, or tetra, bond between two carbon atoms.
Read the full explanation →Which one among the following is an example of chemical change ?
Sodium hydroxide and hydrochloric acid react to form new substances, sodium chloride and water, so this is a chemical change.
Read the full explanation →Which is the correct base pairing found in a normal DNA molecule ?
In the DNA double helix, adenine on one strand always pairs with thymine on the other, and guanine always pairs with cytosine.
Read the full explanation →Consider the following statements :
I. In a seismograph, P waves are recorded earlier than S waves.
II. In P waves, the individual particles vibrate to and fro in the direction of wave propagation whereas in S waves, the particles vibrate up and down at right angles to the direction of wave propagation.
Which of the statements given above is/are correct?
P waves are the fastest earthquake waves and reach a seismograph first, and they are longitudinal, while S waves are transverse.
Read the full explanation →The temperate forests in the Nilgiris, Anaimalai and Palani hills are called :
The patches of evergreen temperate forest in the high valleys of the Nilgiri, Anaimalai and Palani hills of the Western Ghats are called sholas.
Read the full explanation →Which one of the following is NOT a target of the 12th Five-Year Plan ?
The Twelfth Five-Year Plan (2012–17) aimed at 4 per cent growth in agriculture, not 5 per cent. The Twelfth Plan, titled Faster, More Inclusive and Sustainable Growth, was the last five-year plan; after it the Planning Commission was replaced by NITI Aayog in 2015.
Read the full explanation →Which one of the following metals is alloyed with sodium to transfer heat in a nuclear reactor ?
An alloy of sodium and potassium, called NaK, stays liquid at room temperature and carries heat away from the core of some nuclear reactors.
Read the full explanation →Which one of the following greenhouse gases is in largest concentration in the atmosphere?
Among the gases listed, carbon dioxide is present in by far the largest amount, about 0.04 per cent of the air, which is roughly two hundred times the amount of methane.
Read the full explanation →What is the time gap in occurrence of two successive tides at a given place on the ocean surface ?
Most places have two high tides a day, and because the moon rises about 52 minutes later each day, each high tide comes about 12 hours 26 minutes after the last.
Read the full explanation →According to the Köppen climatic classification, the letter code Cfa denotes
In Köppen's code, C means a warm temperate climate, f means rain in all seasons with no dry season, and a means a hot summer.
Read the full explanation →Which one of the following is a cold local wind?
The mistral is a cold, dry northerly wind that blows from the Alps down the Rhone valley of France to the Mediterranean coast.
Read the full explanation →Which one of the following is the correct meaning of ziyarat ?
Ziyarat means a visit to a sacred place, and in India it came to mean the pilgrimage to the dargah of a sufi saint to seek blessings.
Read the full explanation →Different varieties of the same gene are called
An allele is one of the alternative forms of the same gene, found at the same place on a pair of matching chromosomes.
Read the full explanation →Which one of the following is not a Constitutional Commission of India?
It was set up in 1992 under the National Commission for Women Act, 1990, so it is a statutory body, not a constitutional one.
Read the full explanation →The digestive enzymes are present in
Lysosomes are small sacs bound by a membrane that are filled with digestive enzymes able to break down almost any material in the cell.
Read the full explanation →Airbags work on the principle of a chemical reaction triggered by the impact producing a gaseous product that causes a sudden volume change. Which one among the following chemical conversions is responsible for this ?
In a crash a sensor fires an igniter, and sodium azide breaks down almost instantly into sodium and a large volume of nitrogen gas that fills the bag.
Read the full explanation →Kerosene and petrol mixture can be best separated by
Kerosene and petrol mix completely with each other, and their boiling points are close, so they are separated by fractional distillation.
Read the full explanation →Which of the following statements regarding the given rivers is/are correct ?
1. Tsangpo crosses over into India under the name of Dihang.
2. Godavari has the second largest river basin covering about 10 percent of the area of India.
3. Rivers Chambal and Betwa are the important tributaries of river Ganga which join river Ganga directly in Uttar Pradesh.
Select the answer using the code given below :
The Tsangpo enters India as the Dihang and the Godavari has the second largest basin, but the Chambal and Betwa join the Yamuna, not the Ganga.
Read the full explanation →