Explanation

• DOCX is the newer version of DOC, the original official Microsoft Word file format. 
• Microsoft Word 97 - 2003 Document extension (.doc).
• Microsoft Word 2007 to till date Document extension (.docx).

Additional information:

• .xls extension of Excel.
• .ppt extension of PowerPoint.
• .txt extension of Text files.
• .pdf extension of Portable Document Format.

Last verified on 15-02-2026

Explanation

• Full Form: Portable Document Format (PDF)
• Developed by: Adobe Inc.
• Introduced: 1993
• Co-founder associated with Adobe: Charles Geschke
• Purpose: Reliable document sharing and viewing

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Last verified on 01-07-2026

Explanation

• Asia is the largest continent by land area and population.
• It covers about 44.58 million sq km.
• Around 60% of the world’s population lives in Asia.
• It has 40+ countries, including China, India, and Indonesia.
• It makes up about 30% of Earth’s land area.

Additional information:

• Australia is the smallest continent in the world by area.
• Antarctica is the smallest continent in the world by population.

Last verified on 07-02-2026

Explanation

• Pressing F2 allows you to edit the contents or formula of the current cell in MS Excel.

Additional information:

• F4: Repeat last action / toggle absolute and relative references
• CTRL + 1: Opens Format Cells dialog
• CTRL + F: Opens Find dialog
• Works in: Excel 2007, 2010, 2013, 2016, 2019, 365

Last verified on 12-03-2026

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

Explanation

• K-2 (Godwin Austin) has a total height of 8,611 meters (28,251 feet).
• It is the second-highest mountain in the world after Mount Everest.
• K2 is part of the Karakoram Range.
• It is located on the Pakistan–China border in the Gilgit-Baltistan region of Pakistan.
• The letter "K" stands for Karakoram.

Last verified on 12-03-2026

Explanation

• F5 key is used to refresh or reload a web page.
• It updates the page to show the latest content.
• Commonly used in browsers like Google Chrome and Mozilla Firefox.

Additional information:

• Ctrl + R → Refresh page
• Ctrl + Shift + R → Hard refresh (clear cache)
• F11 → Full screen mode
• Ctrl + T → Open new tab
• Ctrl + W → Close current tab

Last verified on 19-04-2026

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

• A Modem (Modulator-Demodulator) converts digital signals into analog signals and vice versa.
• It is used to connect computers to the internet via telephone lines or other networks.

Additional information:

• Switch – connects multiple devices in a network
• Hub – basic network connector
• Repeater – boosts signal strength
• Router – directs internet traffic

Last verified on 19-04-2026