Explanation

• Pressure cookers cook food faster due to Gay-Lussac’s Law.
• This law states that pressure increases when temperature increases in a closed container.
• In a pressure cooker, steam is trapped, increasing pressure.
• Higher pressure raises the boiling point of water above 100°C.
• Food cooks at a higher temperature, so it cooks faster.

Last verified on 14-06-2026

Explanation

• Jabir ibn Hayyan, known as the "father of chemistry."
• He was an Arab Chemist.
• Composition of Alchemy was written by Jabir Bin Hayyan.

Notable ideas:

• Use of organic substances in chemistry
• Sulfur-mercury theory of metals
• Science of the balance
• Science of artificial generation

Last verified on 07-02-2026

Explanation

List of Olympics from 2010 to 2030

Explanation

• Penicillin, the first true antibiotic, was discovered by Alexander Fleming.
• He made this discovery in 1928 at St. Mary’s Hospital, London.
• He found that a mould (Penicillium) killed bacteria in culture dishes.
• His findings were officially published in 1929.
• First patient treated: Albert Alexander (12 February 1941)

Last verified on 01-06-2026

Explanation

• After the failure of the Cripps Mission, Congress reacted strongly.
• It launched the Quit India Movement in 1942.
• This was led by Mahatma Gandhi.
• The demand was for immediate British withdrawal from India.
• It became a major mass movement against British rule.

Last verified on 29-04-2026

Explanation

• Headquarters: Armonk, New York, USA
• IBM: International Business Machines Corporation
• Nickname: Big Blue
• Founded: June 16, 1911
• Nature: American multinational technology corporation
• Operations: Over 175 countries
• Founders: Herman Hollerith, Charles Ranlett Flint, Thomas J. Watson

Last verified on 03-09-2026

Explanation

• Allergy is an abnormal immune response to harmless substances like dust or pollen.
• It occurs when the body reacts excessively to an allergen.
• This reaction involves the immune system producing antibodies.
• Thus, allergy is mainly due to an antigen–antibody reaction.

Last verified on 23-04-2026

Explanation

• In Islamic purification, Ghusl (ritual bath) has 3 Fard (obligatory acts).
• These are necessary for the bath to be valid according to Fiqh rules.
• Ghusl is required after major impurity (Janabat, Haiz, Nifas).
• Without completing these 3, Ghusl is not valid.

Last verified on 25-04-2026

Explanation

Pakistan is the world's fifth-most populous country. The population density in Pakistan is 287 per km² (742 people per mi²). Pakistan world's second-largest Muslim population. The top 10 most populous countries in the world: India China The United States Indonesia Pakistan Brazil Nigeria Bangladesh Russia  Mexico Last verified on 04-09-2026

Explanation

• First capital: Madina
• Hijrah year: 622 AD (1 AH)
• Country: Saudi Arabia
• Role: First Islamic state center
• Famous mosque: Masjid al-Nabawi

Last verified on 27-04-2026