Explanation

• Discoverer: Alexander Fleming
• Year of discovery: 1928
• Place: St. Mary's Hospital, London
• First patient treated with penicillin: Albert Alexander
• Date of first treatment: 12 February 1941

Last verified on 14-09-2026

Explanation

• Carbon dioxide (CO₂) is used in fire extinguishers.
• It extinguishes fire by displacing oxygen and cooling the burning material.
• CO₂ fire extinguishers are especially effective for electrical and flammable liquid fires.
• Carbon dioxide is a colorless and non-flammable gas.
• It leaves no residue after use.

Explanation

• Date: 23 March 625 AD (3 AH)
• Place: Valley of Uhud, near Madina
• Muslim Army: ~1000
• Enemy Army: ~3000
• 50 skilled archers were placed on Mount Uhud by Prophet Muhammad
• It was between Muslims and the Quraish of Makkah.
• The leader of the Quraish was Abu Sufyan.
• The battle is mentioned in the Qur'an (Surah Aal-e-Imran).

Last verified on 25-04-2026

Explanation

Let the number be x.

3% of x = 60

3/100 x X = 60

X= 60 x 1000/3

$$x = frac{60 times 100}{3}$$ x=2000​

Explanation

1, 8, 27, 64, 125, 216, 343, and 512

1^3 = 1

2^3 = 8

3^3 = 27

4^3 = 64

5^3 = 125

6^3 = 216

7^3 = 343

8^3 = 512

Last verified on 05-09-2026

Explanation

Explanation

Explanation

• The Battle of Badr was fought in the year 2 AH (After Hijrah)
• Islamic Date: 17 Ramadan, 2 AH
• Gregorian Date: March 13, 624 CE
• Place: Badr (near Madinah)
• Between: Muslims and Makkans (Quraysh)
• Muslim Leader: Muhammad (SAW)
• Muslims: around 313 soldiers
• Number of Muslim martyrs: 14
• Quraysh Army: around 1000 soldiers
• Muslim horses: 2
• Muslim camels: around 70

Last updated by NA on 09-09-2026

Explanation

• Seismology is the study of earthquakes and seismic waves that move through and around the Earth.
• A seismologist is a scientist who studies earthquakes and seismic waves.

Last verified on 03-04-2026

Explanation

• Al-Arqam ibn Abi al-Arqam was a companion of Prophet Muhammad (PBUH).
• His house (Dar-e-Arqam) became the first center of Islamic preaching in Makkah.
• Early Muslims gathered there to learn Islam secretly.
• Birth → 597 A.D
• Death → 675 A.D

Last verified on 03-04-2026