SSC CGL GK Questions 2026

Hexadecimal has base 16, and because 2 raised to the power 4 equals 16, exactly four binary bits make one hexadecimal digit.

Salim Ali, known as the Birdman of India, was the ornithologist whose surveys built the modern study of Indian birds, and The Book of Indian Birds is his best-known work, long used as a field guide.

Sunny Days was written by the opening batsman Sunil Gavaskar, whose nickname was Sunny, and it covers his early career including the record-breaking debut series in the West Indies.

Mind Master was written by the chess Grandmaster Viswanathan Anand with the writer Susan Ninan, and it sets out the lessons in concentration, preparation and handling defeat that Anand drew from his world championship matches.

The Aryabhatiya is a short Sanskrit work in verse, written by the astronomer and mathematician Aryabhata, which states an accurate approximation for pi, explains the daily rotation of the earth as the cause of the apparent motion of the stars, and gives the correct reason for eclipses.

Charles Darwin published On the Origin of Species in 1859, setting out the theory that species change over generations through natural selection, in which individuals better suited to their surroundings leave more offspring.

Straight from the Heart is the autobiography of the all-rounder Kapil Dev, who captained India to its first cricket World Cup title in 1983 at Lord's and who was the first bowler to take four hundred Test wickets.

The shooter Abhinav Bindra, who won the ten metre air rifle gold at the Beijing Olympics in 2008 and became independent India's first individual Olympic gold medallist, wrote this book with the sports journalist Rohit Brijnath.

Unbreakable is the autobiography of the boxer M C Mary Kom of Manipur, a multiple world champion and an Olympic bronze medallist at London in 2012, and the book describes her journey from a farming family in Manipur to the world stage while raising a family.

The Race of My Life was written by the sprinter Milkha Singh, known as the Flying Sikh, together with his daughter Sonia Sanwalka, and it describes his childhood during Partition, his rise in Indian athletics and the fourth place in the 400 metres at the 1960 Rome Olympics that he…

The British theoretical physicist Stephen Hawking wrote A Brief History of Time in 1988 to explain the Big Bang, black holes and the nature of time to readers without a background in physics, and it became one of the best-selling science books ever published.

Wings of Fire was written by the aerospace scientist and eleventh President of India, A P J Abdul Kalam, along with Arun Tiwari, and it traces his life from a modest childhood at Rameswaram in Tamil Nadu to his work on the satellite launch vehicle and the missile programme.

Playing It My Way is the autobiography of the batsman Sachin Tendulkar, published in 2014 soon after he retired, and it was written with the sports writer Boria Majumdar.

The Convention Concerning the Protection of the World Cultural and Natural Heritage was adopted by the General Conference of UNESCO in 1972, and countries that join it nominate sites of outstanding universal value, which a committee then inscribes on the World Heritage List as cultural, natural or mixed sites.

UNESCO presents the King Sejong Literacy Prize and the Confucius Prize for Literacy every year on 8 September, the day it observes as International Literacy Day, and the prizes reward governments, organisations and individuals whose programmes have spread reading and writing.

The award has been given since 1954 by the refugee agency of the United Nations to a person, group or organisation that has served refugees, displaced people or those without a state.

The United Nations Population Award was instituted by the General Assembly in 1981 and first presented in 1983, when Indira Gandhi of India was one of the two individual laureates, honoured for India's early work on population policy.

Champions of the Earth was launched in 2005 by the United Nations Environment Programme, whose headquarters are at Nairobi in Kenya, and it recognises leaders from government, civil society and business whose work protects the environment, in categories such as policy leadership, entrepreneurial vision and science and innovation.

The prize was instituted by the General Assembly in 1966 and first awarded in 1968, which was observed as the International Year for Human Rights and marked twenty years of the Universal Declaration of Human Rights.

The prize was created in 1995, a year that marked both the fiftieth anniversary of the United Nations and the hundred and twenty fifth birth anniversary of Mahatma Gandhi, and it is named after Madanjeet Singh, the Indian artist, writer and diplomat who endowed it.