Explanation

• Battery is a device that converts chemical energy into electrical energy.
• Batteries work by using a galvanic cell.
• It is an electrochemical device made up of two electrodes and an electrolyte solution.

Last verified on 16-03-2026

Explanation

• The first mosque of Islam is Quba Mosque (Masjid al-Quba).
• Location: Medina, Saudi Arabia.
• Built by: The Islamic Prophet Muhammad in the 7th century.
• Established in 622 CE on the outskirts of Medina (Yathrib).
• Prophet Muhammad (PBUH) spent 14 days praying Qasr here.
• Prophet Muhammad (PBUH) led the first Friday prayer in this mosque.

Additional and Most Important information:

• Masjid-ul-Haram (Kaaba): The first mosque on earth.
• Masjid-e-Aqsa: Built much earlier, associated with Hazrat Sulaiman (A.S.).
• Masjid-e-Nabavi: Built after the Prophet arrived in Medina, not the first.

Last updated by NA on 09-0-2026

Explanation

• The Pacific Ocean is the largest and deepest ocean on Earth.
• It covers about 30% of the Earth's surface.
• It contains 97% of the Earth's water.
• The Mariana Trench, the deepest part of the ocean.
• It is located in the Pacific.
• The Arctic Ocean is connected to the Pacific Ocean via the Bering Strait.

Additional information:

• Oceans cover 71% of the Earth's surface.
• The Indian Ocean is the warmest, with the Persian Gulf being the hottest area.
• The Diamantina Trench is the deepest point in the Indian Ocean.
• Jordan does not have an ocean.
• The Arctic Ocean is the Smallest Ocean of the world.

Last verified on 27-05-2026

Explanation

• A barometer measures atmospheric (air) pressure.
• It helps in weather forecasting, detecting storms, and studying climate changes.
• Two common types of barometers: mercury barometer and aneroid barometer.

Last verified on 13-03-2026

Explanation

• UNO Founded: 24 October 1945 (after World War II 1939–1945)

Additional information:

• UNO Stands for: United Nations Organization
• Headquarters: Manhattan, New York City
• Member States: 193 countries
• Official Languages (6): Arabic, Chinese, English, French, Russian, Spanish
• Motto: “It’s your world!” (commonly used awareness slogan)
• Pakistan Joined UNO: 30 September 1947

Last verified on 10-06-2026

Explanation

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

Last verified on 10-05-2026

Explanation

• Transistors were the core technology used in second-generation computers.
• The University of Manchester's experimental Transistor Computer was first operational in November 1953

Additional information:

The five generations of computers:

1. First Generation (1946-1959 or 1940-1956): Vacuum tube-based technology (e.g., ENIAC).
2. Second Generation (1959-1965 or 1956-1963): Transistor-based technology.
3. Third Generation (1965-1971 or 1964-1971): Integrated circuit-based technology.
4. Fourth Generation (1972-1980): VLSI microprocessor-based technology.
5. Fifth Generation (1980-present): ULSI microprocessor-based technology, with a focus on artificial intelligence.

Explanation

• Charles Babbage is known as the Father of the Computer.
• He designed the more advanced Analytical Engine, which featured a "Mill" (CPU) and a "Store" (memory).

Additional information:

• He was an English polymath.
• Born: 26 December 1791 London, England
• Died: 18 October 1871 (aged 79) London, England

Last updated by NA on 06-11-2026

Explanation

• The primary function of an Operating System kernel is to manage hardware and system resources.
• It acts as a bridge between hardware and software applications.
• Kernel controls CPU, memory, and input/output devices.
• It ensures smooth execution of all programs.
• It is the core part of the operating system.

Last verified on 09-06-2026

Explanation

• Amino acids are the building blocks of proteins.
• Proteins are formed when amino acids join together by peptide bonds.
• Proteins are essential for growth, repair, and body functions.
• There are 20 standard amino acids used to make proteins.

Verified & Updated