Static GK carries most of the General Knowledge marks in the defence exams, and science carries the largest share of it. In NDA & NA, Physics, Chemistry and General Science are about half of the 400 marks of Part B, and History, the freedom movement and Geography are about 20% each, as per the notice. In the CDS (II) 2026 General Knowledge paper, GK24 counted about 37 science questions, about 20 each on Polity and History, about 15 on Geography and environment and about 10 on the Economy; this count is guidance, not an official break-up. The Army's Agniveer CEE gives 15 of its 50 General Duty questions to General Knowledge and 15 to General Science, which covers cells, the human body, plants and animals and common epidemics. Its GK list names history, culture and geography of India and its neighbours, the Constitution, inventions and discoveries, books and authors, and the Indian Armed Forces. This page holds GK24's topic-wise GK notes and GK questions tagged for NDA, CDS and Agniveer, in English and Hindi: General Science, Indian History, Art and Culture, Indian Polity, Geography, Indian Economy and Static GK. Read one topic at a sitting, then solve its questions and the previous-year questions of your exam to see what stayed with you.
The Radcliffe Line, which divided India and Pakistan, was drawn in which year?
The Radcliffe Line was the award of the boundary commissions for Punjab and Bengal, headed by the British lawyer Sir Cyril Radcliffe, and it was published in August 1947 at the time of Partition.
Read the full explanation →The Durand Line is the boundary between which two countries?
The Durand Line was agreed in 1893 between British India and the Amir of Afghanistan and is named after Sir Mortimer Durand, the foreign secretary of the Government of India who negotiated it; after 1947 it became the boundary between Pakistan and Afghanistan.
Read the full explanation →The heavy-lift transport aircraft C-17 of the Indian Air Force is known by which name?
The C-17 Globemaster III, made by Boeing, is the heaviest transport aircraft of the Indian Air Force and is used to move troops, vehicles and relief material over long distances, including to high-altitude airfields.
Read the full explanation →The destroyers built under Project 15B of the Indian Navy are known as which class?
Project 15B produced the Visakhapatnam class of guided missile destroyers, built at Mazagon Dock Shipbuilders in Mumbai, which includes INS Visakhapatnam, INS Mormugao and INS Imphal.
Read the full explanation →The aircraft carrier INS Vikramaditya was earlier known by which name?
INS Vikramaditya is a modified Kiev class ship of Soviet origin, formerly named Admiral Gorshkov, which was rebuilt in Russia and handed over to India, entering service as an aircraft carrier operating MiG-29K fighters.
Read the full explanation →Which is India's only tri-service command, where the Army, Navy and Air Force serve under one commander-in-chief?
It is the only command in which units of the Army, the Navy and the Air Force work under a single commander-in-chief, an arrangement adopted because the islands lie far from the mainland and guard the approaches to the Malacca Strait.
Read the full explanation →Prachand, built by Hindustan Aeronautics Limited, is which kind of platform?
Prachand is the Light Combat Helicopter developed and built by Hindustan Aeronautics Limited, designed to operate from high-altitude bases, which makes it suited to the Siachen and Ladakh sectors where few attack helicopters can carry a useful load.
Read the full explanation →The Rafale fighter aircraft of the Indian Air Force is made by which company?
Rafale is a twin-engine multirole fighter made by Dassault Aviation, the same French company that made the Mirage 2000 flown by India since the 1980s, and the first Indian Rafale squadron was raised at Ambala.
Read the full explanation →INS Arihant, commissioned in 2016, is best described as
INS Arihant was built under the Advanced Technology Vessel programme and commissioned in 2016; because it carries ballistic missiles, the K-15 Sagarika among them, it completed India's nuclear triad, that is the ability to launch a nuclear weapon from land, from the air and from the sea.
Read the full explanation →The Kalvari class submarines of the Indian Navy are built to which foreign design?
The Kalvari class are conventional diesel-electric attack submarines built at Mazagon Dock Shipbuilders in Mumbai to the Scorpene design under a transfer of technology, and the class includes INS Kalvari, Khanderi, Karanj, Vela, Vagir and Vagsheer.
Read the full explanation →Tejas, the Light Combat Aircraft of the Indian Air Force, is manufactured by which organisation?
Tejas is a single-engine multirole fighter designed by the Aeronautical Development Agency and manufactured by Hindustan Aeronautics Limited, the public sector company that also builds the Dhruv helicopter, the Prachand light combat helicopter and the Su-30MKI under licence at Nashik.
Read the full explanation →INS Vikrant, the first aircraft carrier designed and built in India, was constructed at which shipyard?
The indigenous aircraft carrier, commissioned in September 2022 as INS Vikrant, was designed by the Navy's own design organisation and built at Cochin Shipyard in Kerala, which made India one of the few countries able to build a carrier.
Read the full explanation →The blue colour of a clear sky is explained by
The molecules of the atmosphere are much smaller than the wavelength of visible light, and such particles scatter short wavelengths far more strongly than long ones.
Read the full explanation →Hypermetropia, or long-sightedness, is corrected by using a
In hypermetropia the eye lens is too weak or the eyeball is too short, so rays from a nearby object are not converged enough and the image falls behind the retina.
Read the full explanation →Which cells of the retina are responsible for colour vision?
The retina carries two kinds of photoreceptor. Cone cells need reasonably bright light to work and respond selectively to different wavelengths, so they give us the sensation of colour; when the cones are defective a person is colour blind.
Read the full explanation →When white light passes through a glass prism, the colour that suffers the maximum deviation is
The refractive index of a transparent medium is not the same for every colour; it rises as the wavelength falls.
Read the full explanation →A concave lens has a focal length of 50 cm. Its power is
Two steps are needed. First, the focal length must be converted to metres: 50 centimetres is 0.5 metre.
Read the full explanation →The unit of power of a lens is the
The power of a lens measures how strongly it converges or diverges light, and it is defined as one divided by the focal length expressed in metres.
Read the full explanation →The least distance of distinct vision for a normal adult human eye is about
The least distance of distinct vision, also called the near point, is the smallest distance at which an object can be held and still be seen clearly without strain.
Read the full explanation →Which part of the human eye controls the size of the pupil and so the amount of light entering the eye?
The iris is the coloured ring of muscle lying just behind the cornea. By contracting and relaxing it makes the central opening, the pupil, smaller in bright light and larger in dim light, and in this way it regulates how much light falls on the retina.
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