The extension in which Excel file is saved is -

Appeared in: UPPSC 2023

Explanation

.xlsx is the default file extension for Microsoft Excel spreadsheets created in versions 2007 and later.
The 'x' in .xlsx signifies that the file is based on the modern XML (Extensible Markup Language) format, which is more robust and secure than the older binary format (.xls).
File extensions are crucial as they help the computer's operating system identify the type of file and open it with the appropriate application.

Option A: This is the file extension for Microsoft PowerPoint presentations, specifically for older versions (pre-2007). The current extension is .pptx.
Option B: This is the file extension for Microsoft Word documents, specifically for older versions (pre-2007). The current extension is .docx.
Option D: This stands for Portable Document Format, a universal file format developed by Adobe for sharing documents in a fixed layout, independent of the application used to create them.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain File extensions for Microsoft Office applications as background academic context rather than a clinical decision trigger.
Understanding file extensions is a fundamental computer literacy skill essential for managing digital documents, including patient records, reports, and research data in a healthcare setting.
Nurses frequently use software like Excel to track patient data, create duty rosters, or manage inventory. Knowing the correct file type ensures compatibility and proper data handling.
What if? If a nurse receives a file with a '.csv' extension, they should know it stands for 'Comma-Separated Values' and can be opened by Excel, but it will not retain formatting or formulas like an '.xlsx' file.

How to Approach the Question

First, read the question to identify the core subject: the file extension for Microsoft Excel.
Recall or identify the specific software mentioned in the question.
Scan the options provided. Each option represents a different file type associated with common software.
Mentally associate each extension with its program: .ppt with PowerPoint, .doc with Word, .pdf with Adobe Acrobat/readers, and .xlsx with Excel.
Select the option that correctly matches the software in the question to find the correct answer.

Concept Tested & Keywords

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Practise the full UPPSC 2023

Attempt every question from this paper in a timed mock, then review the full solution for each one.