Explanation

• The number of spark plugs needed in a diesel engine is zero
• Diesel engines use compression ignition instead of a spark.
• Air is compressed until it is hot enough to ignite the fuel.
• Instead of spark plugs, they use glow plugs to warm the engine when cold

Explanation

Explanation

• Presented by: Sir Syed Ahmad Khan
• Famous Speech: Meerut Speech
• Date: 16 March 1888
• Purpose: To explain that Muslims and Hindus were separate nations with different religious, cultural, and social identities.
• Importance: Became the ideological foundation of Pakistan.

Last verified on 10-07-2026

Explanation

• The Battle of Badr is the first battle of Islam
• On 17 Ramadan, 2 AH (March 13, 624 CE)
• "Badr" means "full moon" in Arabic.
• Also called Furqan and The Day of the Criterion.
• Took place in the valley of Badr, located in the Hejazi region
• Muslims: Approx. 313 men (82 Muhajirun and 231 Ansar).
• Quraysh: Approx. 1000 soldiers led by Abu Jahl.
• 82-85 Muhajirun and 231 Ansar (61 from Aws and 170 from Khazraj).
• 2 horses and 70 camels.
• Fourteen Muslims were killed, while 70 Kufar were killed and 70 captured.

Last updated question by NA 22-April-2026

Explanation

• Al-Tauba does not begin with Bismillah.
• It is known by two names - At-Taubah and Al-Baraat.
• Surah Tauba is in 10 Parah.
• The number of Rukus in Surah Tauba is 16.
  
  
  

Additional information:

• Bismillah is repeated in the Holy Quran 114 Times.
• Surah Naml surah of the Holy Quran has Bismillah twice.

Last verified on 01-04-2026

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