Explanation

• Time Period: 3300 BCE – 1300 BCE (entire civilization)
• Mature Phase: 2600–1900 BCE
• Major Cities with Drainage: Mohenjo-daro, Harappa, Dholavira, Lothal, Kalibangan
• Number of Main Drains in Mohenjo-daro: Over 700 household drains connected to covered sewers
• Population Estimate: Around 1–2 million people in urban centers

Last verified on 18-01-2026

Explanation

• The common ostrich (Struthio camelus) is the biggest bird in the world.
• It is weighing up to 344 pounds (157 kilograms) and standing 9 feet tall.
• Female ostriches lay the largest eggs of any living bird.
  

• The world’s fastest bird is the peregrine falcon.
• The white bellbird is the world’s loudest bird.

 Last updated on 12 NOV 2026

Explanation

• Artist: Vincent van Gogh
• Year painted: 1889
• Art style: Post-Impressionism
• Location painted: Saint-Rémy-de-Provence, France
• Current location: Museum of Modern Art, New York

Last verified on 10-06-2026

Explanation

• Country: China
• First use: 806 AD (approx.)
• Early name: Feiqian (Flying Money)
• Dynasty: Tang Dynasty → Song Dynasty (official issue)
• Importance: First-ever paper-based monetary system

Last updated by NA on 05-11-2026

Explanation

• Wilhelm Conrad Rontgen discovered X-rays
• He was discovered on 8 November 1895.
• He got the Nobel Prize in Physics in 1901.

Additional questions

• The penetrating power of X-rays depends on their frequency

Last updated by NA on 05-11-2026