Explanation

• Companions: Prophet Muhammad (PBUH) and Hazrat Abu Bakr (R.A.)
• Location: Cave of Thawr, near Makkah, Saudi Arabia
• Purpose: They took refuge there while escaping the Quraysh during the Hijrah.
• Stay: They remained in the cave for three days.
• Miracle: A spider's web at the entrance helped conceal the cave.

Additional information

Ghar-e-Saur:

• Other Name: Ghar-e-Thawr (Cave of Thawr)
• Mountain: Jabal Thawr (Mount Thawr)

Last updated by NA on 05-11-2026

Explanation

• Injeel is also called the Gospel.
• Gospel means truth. 
• Revealed by Allah to Hazrat Esa (AS).
• Injeel means good news. 

Last updated by NA on 05-11-2026

Explanation

• DOS stands for Disk Operating System.
• It is an early type of computer operating system used to manage files and programs.
• It works through text-based commands (command line).
• A famous example is MS-DOS used in early PCs. 
• Dennis Ritchie is the father of MS-DOS.
• It was developed in 1982.

Last updated by NA on 05-11-2026

Explanation

• - Software: A set of instructions that tells a computer how to perform specific tasks.
• - Examples: MS Word, Windows, Google Chrome.

Additional information:

• - Monitor: An output device that displays information.
• - Hardware: Physical parts of a computer.
• - Printer: An output device that prints information on paper.

Last updated by NA on 05-11-2026

Explanation

• Christopher Columbus was Italian, born in Genoa in 1451
• He discovered America in 1492.
• He completed four Spanish-sponsored voyages across the Atlantic Ocean
• He was the 1st Governor of the Indies from 1492–1499
• Died: 20 May 1506 (aged 54), Valladolid, Castile

Last updated by NA on 05-11-2026

Explanation

The prime numbers between 60 and 80 are:

61, 67, 71, 73, and 79

Let's add them up:

61 + 67 = 128

128 + 71 = 199

199 + 73 = 272

272 + 79 = 351

Last updated by NA on 05-11-2026

Explanation

Light Pen: An input device used to select or draw directly on a computer screen.

- Type: Pointing device.

- Uses: Drawing, selecting, and pointing.

- Example: Selecting an object on a CRT screen.

Last updated by NA on 05-11-2026

Explanation

1 byte equals 8 bits.

Additional Information

Last updated by NA on 05-11-2026

Explanation

• Invented by: Dennis Ritchie.
• First appeared: 1972.
• Developed at: Bell Laboratories, USA.
• Company: AT&T.
• Type: General-purpose programming language.
• Co-developer of: UNIX.
• Known as: Father of C Language.

Last updated by NA on 05-11-2026

Explanation

• Author: Maulana Abul Kalam Azad
• Book: India Wins Freedom
• Published: 1959 (first edition)
• Subject: India’s freedom struggle and Partition
• Based on: Political events of the Indian subcontinent

Last updated by NA on 05-11-2026