Static general knowledge fills most of Paper-I in UPSC CAPF. Of the six areas the CAPF (ACs) 2026 notice lists for General Ability and Intelligence, four are static: General Science; Indian Polity and Economy; History of India; and Indian and World Geography. The notice's wording shows the depth expected. Polity covers the political system and the Constitution of India, social systems, public administration, security issues and human rights with their indicators. Economy covers economic development in India. History covers social, economic and political aspects, including the growth of nationalism and the freedom movement. Geography covers physical, social and economic aspects of India and the world. General Science asks about everyday scientific phenomena and new areas such as Information Technology, Biotechnology and Environmental Science. This page holds GK24's topic-wise GK notes for UPSC CAPF, in English and Hindi, written as short facts and tables so that a topic can be revised in one sitting: Indian Polity, Indian History, Geography, Indian Economy, General Science, Environment and Ecology, Computer, and Art and Culture. The same notes serve Paper-II, whose essay part suggests modern Indian history, the freedom struggle, geography, polity and economy as topics. Read one topic at a time, then solve its quiz and the CAPF previous-year questions on this site to check what you have retained. General Mental Ability, the sixth area, is reasoning and arithmetic, and needs separate practice.
Pollens are produced in
The anther is the top part of the stamen, the male organ of a flower, and pollen grains form inside it.
Read the full explanation →During respiration in human beings, the actual place of gaseous exchange is
The alveoli are tiny air sacs at the end of the smallest airways, and oxygen and carbon dioxide pass through their walls.
Read the full explanation →Which one of the following is an example of endothermic reaction?
Breaking calcium carbonate into quicklime and carbon dioxide needs a steady supply of heat, so the reaction absorbs energy. An endothermic reaction takes in heat from its surroundings, while an exothermic reaction gives heat out.
Read the full explanation →Which one of the following metals does not react with oxygen directly?
Platinum is a noble metal and does not combine with oxygen even when heated in air. Metals low in the reactivity series, such as gold and platinum, hold on to their electrons very firmly, so oxygen cannot pull them away under ordinary conditions.
Read the full explanation →Which among the following regarding the nature of goods and income elasticity are correctly matched? (Nature of Goods : Income Elasticity) 1. Necessity : Between 0 and 1 2. Luxury : More than 1 3. Inferior : More than 0 Select the answer using the code given below.
Necessities and luxuries are matched correctly, but an inferior good has a negative income elasticity, not a positive one. Income elasticity of demand is the percentage change in quantity demanded divided by the percentage change in income.
Read the full explanation →Who chaired the second working session of the seminar, on air power as a strategy of national power?
That session treated air power as an instrument of national power and covered deterrence, coercion, escalation control and human capital development.
Read the full explanation →In which year was the Centre for Aerospace Power and Strategic Studies established?
CAPSS was set up in that year as an autonomous research and analysis body working on national security, nuclear and aerospace questions, which is why the year 2026 marks its Silver Jubilee.
Read the full explanation →The CAPSS-IAF seminar held in New Delhi was organised on the sidelines of which exercise?
The seminar was held on 9 October 2026 at the Air Force Auditorium, Subroto Park, New Delhi, while this multinational flying exercise was under way, so the participating teams moved from flying sorties to a conceptual discussion on doctrine.
Read the full explanation →Which one of the following acids is produced in human stomach?
The parietal (oxyntic) cells in the lining of the stomach secrete hydrochloric acid into the gastric juice. Hydrochloric acid makes the stomach strongly acidic, with a pH of roughly 1.5 to 3.5.
Read the full explanation →The percentage by which the money the borrower pays back exceeds the money that was borrowed is called as
The nominal interest rate is simply the percentage by which the amount repaid exceeds the amount borrowed, with no adjustment for inflation.
Read the full explanation →When copper reacts with moist carbon dioxide (CO2) in air, it forms a green coating of which one of the following compounds ?
Copper exposed to moist air slowly gains a green layer of basic copper carbonate, a form of cupric carbonate. Copper does not rust like iron, but it corrodes.
Read the full explanation →A boy completes one round of a circular track of diameter 200 m in 30 s. What will be the displacement at the end of 3 minutes and 45 seconds ?
After 3 minutes 45 seconds the boy has completed seven and a half rounds, so he stands at the point exactly opposite his starting point.
Read the full explanation →Which one of the following statements regarding bile secreted by liver is not correct?
Bile has no digestive enzymes at all; it only prepares fats for digestion by other enzymes. Bile is made by the liver, stored and concentrated in the gall bladder, and poured into the duodenum through the bile duct.
Read the full explanation →How much percentage of carbon dioxide is present in the atmosphere of Venus and Mars ?
Carbon dioxide makes up about 96.5% of the atmosphere of Venus and about 95% of the atmosphere of Mars. The two neighbours of the Earth have atmospheres dominated by carbon dioxide, with nitrogen and argon making up most of the rest.
Read the full explanation →Halophytes are the plants that grow on which one, among the following categories of soil ?
Halophytes are plants adapted to grow in soil or water with a high salt content. The word comes from the Greek 'halos', meaning salt.
Read the full explanation →Which of the following statements with reference to Surface inversion of temperature is/are correct ? 1. It causes instability in the lower layers of the atmosphere. 2. This inversion commonly lasts for a few hours until the Sun comes up. Select the answer using the code given below :
A surface inversion makes the lower air stable, not unstable, and it usually breaks up a few hours after sunrise.
Read the full explanation →Who among the following was India's first Woman Chief Minister ?
She became Chief Minister of Uttar Pradesh in October 1963, the first woman to head a state government in India.
Read the full explanation →Which one of the following is not a function of the pigment carotenoid ?
The reaction centre of a photosystem is a special chlorophyll a molecule, not a carotenoid. In photosynthesis, pigments are grouped into photosystems.
Read the full explanation →Which of the following statements about National Human Rights Commission, India is/are correct ? 1. It can intervene in court proceedings involving human rights violations with the approval of the court 2. It can undertake research in the field of human rights 3. It cannot investigate human rights violation on its own initiative Select the answer using the code given below :
The NHRC can join court cases on human rights with the court's approval and can promote research, but statement 3 is wrong because it can act on its own.
Read the full explanation →Which one of the following is most sensitive to environmental change?
Frogs, toads and salamanders react quickly to changes in water, air and temperature, which makes them the classic indicator animals.
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