Explanation

• The Data Bus transfers actual data between CPU and memory.
• It carries information that is being processed or stored.
• It is a two-way communication path in most systems.

Additional information:

• Address Bus: Carries memory location (address)
• Control Bus: Carries control signals (read/write)
• System Bus: Combination of all three buses
• Direction: Mostly bidirectional for data transfer

Last verified on 22-06-2026

Explanation

• Liaquat Ali Khan was assassinated on 16 October 1951.
• Age: 56 years
• He was Pakistan’s first Prime Minister.
• Birth: 1 October 1895
• Place of assassination: Company Bagh (Liaquat Bagh), Rawalpindi
• Title: Shaheed-e-Millat (Martyr of the Nation)
• His assassin Syed Akbar was immediately killed on the spot by police.

Last verified on 01-05-2026

Explanation

• Lead pencil is made up of graphite.
• Graphite is a form (allotrope) of carbon.
• It is soft and leaves marks on paper easily.
• It is used in pencils because of its slippery layered structure.
• Despite the name “lead pencil,” it contains no real lead.
• Graphite was named by Abraham Gottlob Werner in 1789.

Last verified on 21-06-2026

Explanation

• Author: Benazir Bhutto
• Book Type: Autobiography
• Published: 7th January 1989
• Publisher: Simon & Schuster
• Theme: Politics, struggle, democracy

Additional information:

• Benazir Bhutto was the first female Prime Minister of Pakistan.
• She served two non-consecutive terms: 1988–1990 and 1993–1996.

Last verified on 20-06-2026

Explanation

OIC (Organization of Islamic Cooperation)

• Foundation Date: 25 September 1969
• Headquarters: Jeddah, Saudi Arabia
• Official Languages: Arabic, English, French
• Total Members: 57 countries
• First Summit: Rabat, Morocco
• Significance: Largest international organization after the UN

Last verified on 20-06-2026

Explanation

• Pakistan became an "Islamic Republic" in its 1956 constitution.
• This constitution was the first to declare Pakistan as an Islamic Republic.
• It is reflecting the country's identity as a democratic state founded on the principles of Islam.

Additional information:

• The constitution was adopted on March 23, 1956.
• The 1956 Constitution was abrogated in 1958.
• When President Iskander Mirza imposed martial law and declared himself the Chief Martial Law Administrator.

Last verified on 23-03-2026

Explanation

• In 1979, the Soviet Union (USSR) invaded Afghanistan, marking a major event in the Cold War.
• The invasion aimed to support the communist government in Kabul against insurgent groups.

Additional information:

• Duration of Soviet occupation: 1979–1989 (10 years)
• Afghan resistance groups: Mujahideen fighters
• U.S. support to Mujahideen: military aid, weapons, and training
• Casualties: ~1–2 million Afghan civilians and combatants

Last verified on 12-03-2026

Explanation

• Leader: Hussain Shaheed Suhrawardy
• Visit Year: 1956
• Chinese Counterpart: Premier Zhou Enlai
• Event: Signing of Treaty of Friendship Between China and Pakistan in Beijing
• Significance: Laid the foundation for long-term Pakistan-China relations

Last verified on 16-01-2026

Explanation

• The Indus Waters Treaty was signed on September 19, 1960, in Karachi.
• It was signed between Pakistan (President Ayub Khan) and India (Prime Minister Jawaharlal Nehru).
• It was brokered by the World Bank.

It became effective on April 1, 1960.

• Western Rivers (given to Pakistan): Indus, Jhelum, Chenab
• Eastern Rivers (given to India): Ravi, Beas, Sutlej

Last verified on 30-03-2026

Explanation

• Manchhar Lake is the largest natural freshwater lake in Jamshoro Sindh Pakistan.
• It collects water from the Kithar mountain range.
• It is one of South Asia's largest.
• It covers an area of 23.5 km (14.6 mi)
• It is the part of Indus River basin.

Last verified on 31-03-2026