Explanation

• The Secretary-General of the United Nations is the chief administrative officer of the organization.
• The position was created in 1945 when the UN was founded after World War II.
• The Secretary-General is appointed by the UN General Assembly on recommendation of the Security Council.
• The official tenure is 5 years, and the Secretary-General may be reappointed for another term.

Additional information:

First 3 UN Secretaries-General

1. Trygve Lie (Norway) – 1946–1952
2. Dag Hammarskjöld (Sweden) – 1953–1961
3. U Thant (Myanmar) – 1961–1971

Last updated by NA on 05-11-2026

Explanation

• Author: Maulana Abul Kalam Azad
• Book: India Wins Freedom
• Published: 1959 (first edition)
• Subject: India’s freedom struggle and Partition
• Based on: Political events of the Indian subcontinent

Last updated by NA on 05-11-2026

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

Explanation

• Inventors: Montgolfier brothers (Joseph-Michel and Jacques-Étienne).
• First public demonstration: 4 June 1783, Annonay, France.
• First passenger flight: 1783, near Paris.
• Known as: Pioneers of human flight.

Last updated by NA on 04-11-2026