Explanation

• World Environment Day is on 5 June.
• First observed in the city of Spokane in the USA in 1974.
• Established by the UN General Assembly in 1972.
• It is also called Eco Day.

Additional information:

Theme:

• 2020: Time for Nature in Colombia
• 2021: Ecosystem restoration in Pakistan
• 2022: Only One Earth in Sweden
• 2023: Solutions to Plastic Pollution in the Ivory Coast
• 2024: Land restoration, desertification, and drought resilience in Riyadh, Saudi Arabia
• 2025: Ending plastic pollution in South Korea

Last verified on 04-06-2026

Explanation

• Author: J. K. Rowling
• Full Name: Joanne Rowling
• Born: 1965
• Birth Place: United Kingdom
• Profession: Author, Screenwriter
• Harry Potter series has 7 main books.
• First book: Harry Potter and the Philosopher’s Stone (1997).

Last verified on 04-04-2026

Explanation

• Nelson Mandela became the first Black President of South Africa on 10 May 1994.
• He served as president until 1999.
• He was imprisoned in 1962.
• He spent 27 years in prison.
• Nelson Mandela International Day is celebrated on 18 July.
• He died on 5 December 2013.

Last verified on 03-06-2026

Explanation

• The dragon is a national symbol of China.
• In Chinese culture, the dragon represents power, strength, and good fortune.
• It is a mythical creature deeply linked with Chinese history and emperors.

Last verified on 03-06-2026

Explanation

• Mustard gas (Sulfur Mustard) was widely used as a chemical weapon in World War I (1914–1918).
• It was first introduced by Germany in July 1917.
• It causes severe burns, blisters, and damage to the eyes and lungs.
• It was used during the Third Battle of Ypres.

Last verified on 03-06-2026

Explanation

• Mossad is the national intelligence and secret agency of Israel.
• It is officially known as the Institute for Intelligence and Special Operations.
• Mossad was established on 13 December 1949.
• It plays a key role in intelligence gathering and covert operations.
• Its headquarters is located in Tel Aviv, Israel.

Last verified on 03-06-2026

Explanation

• Gatwick Airport is an international airport in the United Kingdom.
• It is located near London, England.
• It is the second busiest airport in the UK after Heathrow.
• Gatwick handles both domestic and international flights.

Last verified on 03-06-2026

Explanation

• The modern bicycle was invented by John Kemp Starley.
• He introduced the safety bicycle design in 1885.
• This design included two equal-sized wheels and a chain drive system.
• He is known as the father of the modern bicycle.

Last verified on 02-06-2026

Explanation

• First World population day was celebrated in 1987.
• World population day is observed on July 11.

Additional information:

• Theme 2024: Leave no one behind, count everyone
• Theme 2025: Empowering young people to create the families they want in a fair and hopeful world.

Last verified on 01-02-2026

Explanation

• Tokyo is considered the most populous city in the world (metro area).
• It is the capital city of Japan in 1868.
• It is a global center for finance, technology, and culture.
• It was formerly known as Edo in earlier history.
• The city has one of the largest urban populations on Earth.

Last verified on 02-06-2026