Explanation

• Nitrogen (N₂) → 78%

Additional information:

• Oxygen (O₂) → 21%
• Argon (Ar) → 0.93%
• Carbon dioxide (CO₂) → 0.04% (approximately)
• Other gases → Trace amounts

Last verified on 28-06-2026

Explanation

• A Barometer is an instrument used to measure air (atmospheric) pressure.
• It helps in weather forecasting by measuring changes in atmospheric pressure.
• The mercury barometer is the oldest type of barometer.
• It was invented by Evangelista Torricelli in 1643.
• Barometers are widely used in meteorology and aviation.

Last verified on 09-07-2026

Explanation

• Date: 27 October
• Observed as: Kashmir Black Day
• First oberved Year: 1947
• Purpose: To mark the arrival of Indian troops in Srinagar.

Explanation

• Hazrat Khalid bin Waleed (R.A) was given the title “Saifullah” (Sword of Allah).
• Given by: Holy Prophet Muhammad (PBUH)
• Born: 592 AD (Makkah)
• Died: 642 AD (Homs, Syria)
• Served under: Prophet Muhammad (PBUH), Abu Bakr (R.A), Umar (R.A)

Last verified on 10-06-2026

Explanation

• Full name: Rashtriya Swayamsevak Sangh.
• Founded: 27 September 1925.
• Founder: Keshav Baliram Hedgewar.
• Headquarters: Nagpur, Maharashtra, India.
• Main purpose: Promotes Hindu cultural identity and organization in Indian society.

Last verified on 15-10-2026

Explanation

• Current Position: 72nd U.S. Secretary of State
• Assumed Office: 21 January 2025
• President: Donald Trump
• Preceded by: Antony Blinken
• Nationality: American
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Last verified on 15-07-2026

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Explanation

• Sahib-ul-Hoot means “the companion of the fish.”
• Hazrat Younus (A.S.) is associated with this title because he was swallowed by a large fish.
• The Quran mentions his supplication while he was in the darkness (Surah Al-Anbiya, 21:87).

Last verified on 15-10-2026

Explanation

• In March 1976, Pakistan and France signed an agreement for a plutonium-based reprocessing plant at Chashma.
• The deal included a 600 MW power plant.
• France canceled the deal in August 1978.

Additional information:

• Pakistan began developing nuclear weapons in 1972 under Prime Minister Zulfikar Ali Bhutto.
• Pakistan conducted nuclear tests in 1998.
• It is now considered a nuclear weapon state.

Last verified on 15-10-2026

Explanation

Explanation

• IBRD (World Bank): 11 July 1950

Additional information:

• United Nations (UN/UNO): 30 September 1947.
• FAO: 7 September 1947.
• Commonwealth of Nations: 1947; withdrew in 1972 and rejoined in 1989. 
• WHO: 1948.
• UNESCO: 1949.
• IMF: 11 July 1950. 
• SEATO: 1954; dissolved in 1977.
• CENTO: 1955; dissolved in 1979.
• OIC: 1969.
• SAARC: 1985.
• WTO: 1995.
• Shanghai Cooperation Organisation (SCO): 9 June 2017.

Last verified on 15-10-2026