Explanation

O negative (O⁻) blood group is called the universal donor.

It can be transfused to any blood group (A, B, AB, or O).

O⁻ lacks A, B, and Rh antigens, preventing immune reactions in recipients.

Explanation

• Second Commander-in-Chief: General Sir Douglas Gracey (Feb 1948 – Jan 1951)
• First Muslim Commander-in-Chief: General Muhammad Ayub Khan (1951)

Explanation

• The Sui Gas Field, located near Sui in Balochistan Province, Pakistan.
• It was discovered by Pakistan Petroleum Limited in 1952.
• Production of Sui gas began in 1955.
• It remains the largest natural gas field in Pakistan.

Explanation

• Electron: Discovered by J. J. Thomson, 1897

Additional information:

• Proton: Discovered by Ernest Rutherford, 1919
• Neutron: Discovered by James Chadwick, 1932
• Atomic Model Proposed: Plum Pudding Model
• Significance: First subatomic particle discovered

Last verified on 16-01-2026

Explanation

• Scientist: Edward Jenner
  • Discovery Year: 1796
  • Vaccine Type: Smallpox
  • Significance: First ever successful preventive vaccine
  • Extra Fact: Smallpox was declared eradicated in 1980 by WHO

Additional information:

• Edward Jenner is often called the “Father of Immunology.”

Last verified on 16-01-2026

Explanation

Charles Babbage is known as the Father of the Computer.

He was an inventor from the UK.

Additional information:

• He was born in 1791.
• He was died in 1871.

Last verified on 16-01-2026

Explanation

• Location: Sandouping, Yiling District, Hubei, China (on Yangtze River)
• Type & Status: Hydroelectric gravity dam; world’s largest power station
• Construction Timeline: Began 14 December 1994, opened in 2003
• Completion: Fully completed in 2012
• Capacity & Purpose: 22,500 MW; flood control, power generation, navigation

Last verified on 15-01-2026

Explanation

The 38th parallel is a name given to the latitude 38° N, which demarcates North Korea and South Korea.

ADDITIONAL INFORMATION RELATED TO 38th parallel 

The line was demarcated by U.S. military planners at the Potsdam

It was established at the end of World War II.

It is the symbol of the Cold War.

It is a circle of latitude 38 degrees north of the equator.

Explanation

The United Nations General Assembly declared May 3 to be World Press Freedom Day

Observed by: UNESCO

while

Labor Day: May 1

Environment Day: June 5th

Earth Day: April 22

AGM 23.02.2023

Explanation

Petra is an archaeological site located in Jordan.

It is famous for its rock-cut architecture and water conduit system.

Petra was the capital of the Nabataean Kingdom around 4th century BC.

It was declared a UNESCO World Heritage Site in 1985 and named one of the New Seven Wonders of the World in 2007.