Static GK decides most of the General Awareness score in SSC exams. The CGL, CHSL and CPO notices describe it in almost the same words: questions on India and its neighbouring countries in History, Culture, Geography, the Economic Scene, General Policy and Scientific Research, and on everyday observation in its scientific aspect. The GD notice adds Sports, General Polity and the Indian Constitution, and the MTS notice lists Social Studies, General Science and Environmental Studies up to the 10th Standard. This page brings together GK24's GK notes and practice questions tagged for all five SSC exams. The notes follow a subject-wise syllabus, one topic per note in English and Hindi: Indian Polity, Indian History, Geography, Indian Economy, General Science, Environment and Ecology, Art and Culture, Computer, Sports, Awards and Honours, Books and Authors, Days and Dates, and Static GK. Each note is written as short facts and tables so that a topic can be revised in one sitting, and each ends with multiple-choice questions and explanations. The level is what changes between exams: read MTS and GD topics at Class 10 depth, CHSL at Class 12 depth, and CGL and CPO at graduate depth, where questions ask for the article number or the year rather than the broad idea. Start with Polity, History and Geography, which fill the most questions in past papers in GK24's reading, then move to the Economy and Science. After each note, solve its questions here and your exam's previous-year questions on its own page.
The forbidden energy gap of silicon at room temperature is approximately:
Silicon is the most widely used semiconductor and its forbidden energy gap, the separation between the top of the valence band and the bottom of the conduction band, is about 1.1 electron volts at room temperature.
Read the full explanation →In a p-type semiconductor, the majority charge carriers are:
A p-type semiconductor is made by adding a trivalent impurity such as boron, aluminium, gallium or indium.
Read the full explanation →Which of the following impurities, when added to pure silicon, produces an n-type semiconductor?
An n-type semiconductor is made by doping with a pentavalent element, that is one with five valence electrons, such as phosphorus, arsenic, antimony or bismuth.
Read the full explanation →With a rise in temperature, the electrical resistance of a semiconductor:
A semiconductor has a small forbidden energy gap, so heating supplies thermal energy that pushes more electrons from the valence band into the conduction band, creating more electron-hole pairs.
Read the full explanation →Under which law are national parks and wildlife sanctuaries notified in India?
This Act provides for the declaration of national parks and wildlife sanctuaries, lists protected species in its schedules, and, after the amendment of 2002, added two further categories, conservation reserves and community reserves.
Read the full explanation →Which wetland, the largest in northern India, lies at the confluence of the Beas and the Sutlej?
The Harike wetland in Punjab, also called Hari-Ke-Pattan, was formed by a barrage at the point where the Beas joins the Sutlej, is the largest wetland of northern India, and is a Ramsar site rich in waterfowl.
Read the full explanation →The dugong, or sea cow, is best associated with which Indian marine protected area?
The dugong is a marine mammal that grazes on sea grass, and the sea grass beds of the Gulf of Mannar between Tamil Nadu and Sri Lanka are its principal habitat in India; the Gulf of Mannar was declared the country's first marine biosphere reserve in 1989 and the dugong…
Read the full explanation →Salim Ali, known as the Birdman of India, is associated with which of the following?
Salim Ali wrote this standard field guide, carried out the bird surveys on which several sanctuaries were notified, and was long associated with the Bombay Natural History Society; the Salim Ali Centre for Ornithology and Natural History at Coimbatore bears his name.
Read the full explanation →The Ramsar Convention, under which wetlands of international importance are designated, was signed in which year?
The Convention on Wetlands was signed in the Iranian city of Ramsar in 1971, which is why the sites designated under it are called Ramsar sites; it came into force in 1975, India became a party in 1982, and World Wetlands Day is observed on 2 February to mark the…
Read the full explanation →Which Indian wetland and bird area is the only protected sanctuary in the Union Territory of Lakshadweep?
Pitti is a tiny uninhabited coral islet in Lakshadweep, notified as the Pitti Bird Sanctuary, and is the breeding ground of sooty terns and other sea birds; it is the only wildlife sanctuary of the territory.
Read the full explanation →Chilika Lake, which contains the Nalaban Bird Sanctuary, is located in which state?
Chilika is a brackish water lagoon on the Odisha coast, the largest of its kind in Asia, separated from the Bay of Bengal by a long sand bar.
Read the full explanation →Which of the following is the first marine national park of India?
Declared in Gujarat in 1980, it was the first area in India to be notified as a marine national park, and it covers a chain of islands carrying coral reefs and mangrove along the Gulf of Kachchh.
Read the full explanation →Which of the following is the only marine turtle sanctuary of India, famous as the nesting ground of the olive ridley turtle?
Gahirmatha, on the Odisha coast beside the Bhitarkanika mangroves, is the only turtle sanctuary notified in India and protects the world's largest mass nesting ground of the olive ridley turtle, where the phenomenon of arribada, or mass nesting, takes place.
Read the full explanation →Keoladeo National Park, earlier known as the Bharatpur Bird Sanctuary, is located in which state?
Keoladeo National Park stands at Bharatpur in eastern Rajasthan and is unusual in being a man-made wetland, created by a ruler of Bharatpur as a duck shooting reserve and later turned into a sanctuary and then a national park.
Read the full explanation →In which state is the Bankapura Peacock Sanctuary situated?
The Bankapura Peacock Sanctuary lies within the ruins of Bankapura fort in Haveri district of Karnataka and is one of the very few protected areas in India notified specifically for the Indian peafowl, the national bird.
Read the full explanation →Section 79 of the Information Technology Act, 2000 relates to:
Section 79 gives an intermediary such as a network service provider or a social media platform a safe harbour, provided it merely transmits or hosts the content, does not initiate or modify it, and observes the due diligence prescribed by the rules; the Shreya Singhal judgment read the section down…
Read the full explanation →In which case did the Supreme Court hold that the right to privacy is a fundamental right under Article 21?
A bench of nine judges held in 2017 that the right to privacy is intrinsic to the right to life and personal liberty under Article 21, which became the constitutional basis for India's data protection framework and for the Digital Personal Data Protection Act, 2023.
Read the full explanation →Which amendment to the Information Technology Act inserted sections 66A to 66F and gave statutory recognition to electronic signatures?
The Information Technology (Amendment) Act, 2008 came into force on 27 October 2009 and made the most important changes to the parent Act: it added section 3A on electronic signatures, inserted the computer-related offences of sections 66A to 66F and 67A to 67C, added section 43A on compensation for failure…
Read the full explanation →The national cyber crime helpline number for reporting financial fraud in India is:
The helpline 1930 is run with the national cyber crime reporting portal by the Indian Cyber Crime Coordination Centre under the Ministry of Home Affairs, and is meant for the quick reporting of online financial fraud so that the transfer of money can be stopped.
Read the full explanation →A digital signature under the Information Technology Act is created using:
Section 3 provides that an electronic record is authenticated by affixing a digital signature created by use of an asymmetric crypto system and a hash function; the hash function reduces the record to a message digest and the signer's private key encrypts it, while anyone can verify it with the…
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