Explanation

• MS-DOS: Microsoft Disk Operating System
• Developed by: Microsoft
• Designed for: x86-based personal computers
• Interface: Command-line interface (CLI)
• IBM version: IBM PC DOS
• DOS: A term also used for MS-DOS-compatible operating systems.

Explanation

• Conquest of Sindh: 712 AD
• Battle: Aror (near Rohri)
• Opponent: Raja Dahir (killed in battle)
• He attacked Sindh on orders of the Umayyad Caliph through Hajjaj bin Yusuf.
• Death: 18 July 715 AD

Major cities captured:

• Nirun
• Debal (Sikka fortress)
• Brahmanabad
• Alor (Aror)
• Multan

Last verified on 01-04-2026

Explanation

• Ctrl + L → Left Align

• Ctrl + E → Center Align
• Ctrl + R → Right Align
• Ctrl + J → Justify

Last verified on 28-09-2026

Explanation

• Total bones in adult human body = 206
• At birth = 270–300 bones (fuse to become 206)

The total bones of our body can be divided into:

• Axial skeleton = 80 bones
• Appendicular skeleton = 126 bones

Additional information:

• Newborn baby has 300 bones
• Longest bone = Femur
• Shortest bone = Stapes
• Bones in human skull = 22

Last verified on 30-03-2026

Explanation

Explanation

• Nelson Mandela became the first Black President of South Africa on 10 May 1994.
• He served as president until 1999.
• He was imprisoned in 1962.
• He spent 27 years in prison.
• Nelson Mandela International Day is celebrated on 18 July.
• He died on 5 December 2013.

Last verified on 03-06-2026

Explanation

Czech Republic Capital is Prague.

Czech Republic Currency is Czech Koruna.

Czech Republic official language is Czech; Slovak.

Czech Republic located is in Continent Europe.

Czech Republic Primary Religion is N/A.

Last verified on 26-09-2026

Explanation

The name "Muhammad" appears four times in the Quran.

1. Surah Al-Imran (3:144)
2. Surah Al-Ahzab (33:40)
3. Surah Muhammad (47:2)
4. Surah Al-Fath (48:29)

Additional information:

The name "Ahmad" is mentioned once in the Quran:

1. Surah As-Saff (61:6)

Surah Muhammad is the 47th surah of the Quran.

• It has 38 verses.

Last updated 08 Nov 2026 by NA

Explanation

• First Azan: 1 A.H., after the migration to Madinah.
• First Muezzin: Bilal ibn Rabah (RA).
• Chosen by: Prophet Muhammad (PBUH) 
• Title: Sayyid al-Mu’azzinin (Leader of Muezzins).

Last updated by NA ON 16-09-2026

Explanation

• The United States of America has 50 states
• Capital: Washington, D.C.
• Largest State: Alaska
• Smallest State: Rhode Island
• Located on the North American continent. 
• Has 5 major territories and various islands.

 Last updated on 12 NOV 2026