SSC CGL GK Questions 2026

The American swimmer competed at five Olympic Games and finished with 28 medals, of which 23 are gold, far ahead of anyone else in any sport.

At the World Athletics Championships held in Berlin in August 2009, Usain Bolt of Jamaica lowered his own world records to 9.58 seconds over 100 metres and 19.19 seconds over 200 metres, the two fastest times ever recorded.

The Brazilian forward, whose full name was Edson Arantes do Nascimento, was part of the Brazil squads that won the World Cup in 1958, 1962 and 1970, and no other player has three winners' medals.

Founded in 1883, it is India's oldest conservation body, it works from Mumbai, and besides the popular magazine Hornbill it publishes a scientific journal and runs long-running bird and wildlife surveys; Salim Ali, the country's best known ornithologist, was associated with it for decades.

It was signed on 2 February 1971 in the Iranian city of Ramsar, which is why the treaty is always called the Ramsar Convention and why 2 February is kept as World Wetlands Day.

The Convention on Biological Diversity was opened for signature at the Rio Earth Summit in 1992 and came into force in 1993; its secretariat works from Montreal, and its two protocols are the Cartagena Protocol on biosafety and the Nagoya Protocol on access to genetic resources and the fair sharing…

The IPCC was created in 1988 so that governments would have an authoritative, regularly updated assessment of climate science; its secretariat is at Geneva, and it shared the 2007 Nobel Peace Prize with Al Gore.

WWF has published the Living Planet Report since the late 1990s, and its central measure, the Living Planet Index, tracks the average change in the size of monitored vertebrate populations.

The IUCN Red List of Threatened Species was begun in 1964 and is the accepted global inventory of the conservation status of plants and animals.

IUCN was set up in 1948 at a conference held at Fontainebleau and was then called the International Union for the Protection of Nature; its headquarters later settled at Gland in Switzerland.

UNEP was created in 1972 after the Stockholm Conference on the Human Environment, and the decision to place it at Nairobi made it the first major United Nations programme headquartered in a developing country, a point examiners repeat often.

NDMA is the apex body for disaster management in India, created under the Disaster Management Act of 2005 and chaired by the Prime Minister; it frames policies and plans for prevention, mitigation and preparedness.

BirdLife International is a worldwide partnership of independent national conservation organisations, with its secretariat at Cambridge in the United Kingdom, so statement 1 is correct.

This Act gave electronic records and digital signatures the same legal standing as paper records and handwritten signatures, and its amendment of 2008 broadened the provision to electronic signatures generally.

The Advanced Encryption Standard is the Rijndael cipher, designed by the Belgian cryptographers Joan Daemen and Vincent Rijmen, which won an open competition and was adopted in 2001 in place of the ageing Data Encryption Standard.

In a key pair, whatever one key locks only the other can unlock. So a message encrypted with the receiver's public key can be opened only by the receiver's private key, which nobody else holds; that is exactly what confidentiality requires.

A digital signature is made by hashing the document and encrypting that digest with the signer's private key.

The Message Digest 5 algorithm takes an input of any length and returns a 128-bit digest.

RSA, named after Rivest, Shamir and Adleman, works with a linked pair of keys and takes its security from the difficulty of factorising the product of two large prime numbers; it is used both to exchange keys and to create digital signatures.

HTTPS is HTTP carried inside an SSL or TLS tunnel, and the port reserved for it is 443, which is why a padlock appears in the address bar when a site is reached on that port with a valid certificate.