Explanation

• In MS Word, Ctrl + J is used to justify text.
• Justified text is evenly aligned on both left and right margins.
• It is commonly used in books, newspapers, and formal documents.

Additional information:

• Ctrl + L → Left align
• Ctrl + E → Center align
• Ctrl + R → Right align

Last verified 29-05-2026

Explanation

HTTP stands for Hypertext Transfer Protocol.

It uses port 80 by default for non-secure web communication.

For secure HTTP (HTTPS), the default port is 443.

Last updated by NA on 15-02-2026

Explanation

• Ctrl + K → Insert Hyperlink

Additional information:

• Ctrl + P → Print
• Ctrl + F2 → Print Preview
• Ctrl + H → Replace dialog box
• Ctrl + D → Font dialog box

Last verified on 06-07-2026

Explanation

• RAM (Random Access Memory) is used for both read and write operations.
• RAM is a volatile memory, meaning data is lost when the power is turned off.
• It temporarily stores data and instructions needed by the CPU during processing.

Additional information:

• ROM is mainly used for read-only operations and stores permanent instructions.
• PROM can be programmed once.

Last verified on 07-08-2026

Explanation

• The shortcut key for Undo (last action reverse) is Ctrl + Z in most computer systems.
• It is used to cancel the last mistake or action.

Additional information:

• Ctrl + P = Print
• Ctrl + Y = Redo
• Ctrl + S = Save
• Ctrl + C = Copy command
• Ctrl + V = Paste
• Ctrl + C = Copy
• Ctrl + X = Cut
• Ctrl + Y = Redo

Last verified on 10-06-2026

Explanation

• Europe is the only continent without a desert.
• It has a temperate climate with sufficient rainfall.

Additional information:

• Divided by the Ural Mountains
• Second-smallest continent
• Covers 2% of Earth’s surface
• Area: 10.18 million km²

Last verified on 16-01-2026

Explanation

• Email stands for Electronic Mail.
• It is a method of sending and receiving digital messages through the internet.
• The term electronic mail has been used with its modern meaning since 1975.
• The shorter form E-mail became common around 1979.

Additional information:

Parts of a valid email address:

1. Email Prefix
2. Email Domain

Address: example@mail.com

1. example = Email Prefix
2. mail.com = Email Domain

Last verified on 16-06-2026

Explanation

• CPU stands for Central Processing Unit.
• It is the main part of a computer that processes all instructions.
• It is considered the brain of the computer system.
• It performs all calculations and decision-making tasks.
• It controls the operations of all hardware and software.
• It is located on the motherboard.

Last verified on 10-06-2026

Explanation

• GT Road: Grand Trunk Road
• Constructed/Developed by: Sher Shah Suri
• Purpose: Connected major cities and improved trade and travel.
• Original Name: Known as Sadak-e-Azam or Badshahi Sarak.
• Length: 3,655 km (2,271 mi)
• East end: Teknaf, Bangladesh
• West end: Kabul, Afghanistan

Explanation

• Markhor is the national animal of Pakistan.
• “Markhor” means “snake eater.”
• It is known as a symbol of bravery and sharp intelligence.
• It is large wild goat (Capra species).
• It is found in Central Asia, the Karakoram, and the Himalayan regions.