Aim for higher marks with our MCQs for CBSE Class 9 Computer Science, updated for 2026-27. These chapter-wise objective questions help Class 9 students master the current Computer Science exam pattern, and build stronger problem-solving skills.
What Class 9 Students Gain From Computer Science MCQs
- Every Computer Science MCQ comes with a correct, explained answer - not just the right option.
- Built around the 2026 Computer Science textbook from CBSE, following their latest guidelines.
- A wide range of Class 9 Assertion and Reasoning, Case-based, and Fill-in-the-blanks questions for Computer Science.
- Organized sets that test your understanding of every important Computer Science topic, chapter by chapter.
Class 9 Computer Science Chapter-wise MCQ Question Bank
Access the latest 2026-27 question sets for Computer Science below. These MCQs are a solid way to check your own understanding, and spot weak areas before your exams.
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Quick Practice - Try a Few Questions First Pick a chapter below, answer a few questions instantly, then jump to the full set list for more. Q1.Which command-line utility in Ubuntu Linux is used to display the current working directory? Answer: (a) pwd. The `pwd` (print working directory) command outputs the full absolute path of the directory you are currently in.
Q2.Which utility command is used to create a new directory in Linux? The correct answer is (c) mkdir — `mkdir` stands for "make directory" and is used to generate new folders in the file system.
Q3.In Ubuntu Linux, which shortcut key combination opens the default Terminal window? (b) Ctrl + Alt + T is correct. This is the standard global keyboard shortcut in Ubuntu to quickly launch the GNOME terminal.
Q1.In Boolean algebra, the operation corresponding to logical addition is represented by which gate? Answer: (b) OR. The OR operation performs logical addition (+), outputting 1 if at least one input is 1.
Q2.According to Boolean laws, the expression A + A' is always equal to: The correct answer is (a) 1 — by the Complementarity Law of Boolean Algebra, combining any variable with its inverse using OR results in true (1).
Q3.Which of the following logic gates is known as a Universal Gate? (d) NAND is correct. Both NAND and NOR gates are universal gates because any other fundamental logic function can be constructed using only them.
Q1.The physical, touchable components that make up a computer system are collectively called: Answer: (b) Hardware. All mechanical, electrical, and electronic parts of a computer system fall under hardware.
Q2.The primary circuit board inside a computer that connects the CPU, memory, and expansion slots is the: The correct answer is (a) Motherboard — it serves as the central backbone connecting every subsystem and peripheral together.
Q3.Which component is known as the "Brain of the Computer"? (c) Central Processing Unit (CPU) is correct. It carries out arithmetic, logic, and instruction control operations.
Q1.A network that connects computers within a single room, office, or building is classified as a: Answer: (a) LAN. A Local Area Network covers localized geographical areas like a school laboratory, office, or home.
Q2.Which network topology connects all nodes to a single central central communication line called the backbone? The correct answer is (c) Bus Topology — devices transmit data along one common transmission cable terminated at both ends.
Q3.Which hardware device is essential for connecting a computer to a local area network? (b) NIC (Network Interface Card) is correct. It provides the physical and electrical interface between the workstation and the network medium.
Q1.Software designed to run a computer's hardware and application programs is called: Answer: (b) System Software. This includes Operating Systems, Device Drivers, and firmware that maintain low-level functionality.
Q2.Which type of translator converts high-level program code into machine code line-by-line? The correct answer is (c) Interpreter — unlike a compiler which translates the whole file at once, an interpreter executes statements sequentially.
Q3.Antivirus and Disk Cleanup tools are examples of which software category? (a) Utility Software is correct. Utility programs help analyze, configure, optimize, and maintain computer performance.
Q1.In a relational database table, a single horizontal row is formally termed as a: Answer: (b) Tuple / Record. Each row represents a complete set of related data for a single item or entity.
Q2.A field that uniquely identifies every record in a database table is called the: The correct answer is (a) Primary Key — it enforces entity integrity by ensuring no two records have duplicate identification values.
Q3.What is the primary language used to query, modify, and manage relational databases? (c) SQL is correct. SQL (Structured Query Language) is the worldwide standard interface for RDBMS platforms like MySQL and Oracle.
Q1.Which shortcut key is used to center-align the selected text in most word processors? Answer: (b) Ctrl + E. Ctrl + C is reserved for Copy, whereas Ctrl + E applies Center alignment.
Q2.What is the function of the "Format Painter" tool? The correct answer is (c) Copy text formatting from one section to another — it duplicates fonts, sizes, and colors without copying the text itself.
Q3.Which alignment aligns text equally along both the left and right margins? (a) Justify is correct. Justified alignment adjusts word spacing to create straight edges on both borders (Ctrl + J).
Q1.In an email composer, which field hides the recipient's email address from other recipients? Answer: (c) Bcc. Blind Carbon Copy (Bcc) ensures listed email addresses remain confidential and unseen by other recipients.
Q2.The fraudulent practice of sending fake emails disguised as legitimate institutions to steal credentials is called: The correct answer is (b) Phishing — attackers impersonate banks or services using deceptive links to capture passwords and card numbers.
Q3.Which protocol ensures encrypted and secure transmission of web traffic? (c) HTTPS is correct. HTTPS leverages SSL/TLS encryption to protect communications between the browser and web servers.
Q1.What is the basic execution cycle followed by modern digital computers? Answer: (b) Input - Process - Output (IPO). Data is accepted as input, manipulated by the CPU, and delivered as meaningful output.
Q2.Which unit of the CPU is responsible for performing additions, comparisons, and logical calculations? The correct answer is (a) ALU (Arithmetic Logic Unit) — it executes mathematical operations (+, -, *, /) and decision logic.
Q3.The smallest unit of data in computing that holds either a 0 or 1 is called a: (c) Bit is correct. A bit (binary digit) is the fundamental atomic storage unit in digital electronics.
Q1.Who is universally acknowledged as the "Father of Computers"? Answer: (a) Charles Babbage. He conceptualized and designed the Difference Engine and the general-purpose Analytical Engine.
Q2.First-generation computers (1940-1956) relied on which core electronic technology? The correct answer is (b) Vacuum Tubes — systems like ENIAC and UNIVAC utilized bulky thermionic vacuum tubes for basic circuitry.
Q3.Integrated Circuits (ICs) were introduced in which computer generation? (c) Third Generation is correct. Third generation computers (1964-1971) replaced discrete transistors with compact silicon integrated circuits.
Q1.Which of the following devices is strictly an input device? Answer: (a) Optical Scanner. A scanner converts physical documents and images into digital signals for processing.
Q2.What device is commonly used by evaluation boards to grade multiple-choice test sheets? The correct answer is (b) OMR (Optical Mark Reader) — it senses pencil or pen markings on pre-printed forms.
Q3.Which type of printer uses toner powder and drums to deliver high-speed printing? (c) Laser Printer is correct. Laser printers use electrophotographic mechanisms with dry toner for sharp text output.
Q1.The term "GIGO" in computer operations stands for: Answer: (a) Garbage In, Garbage Out. GIGO highlights that inaccurate or invalid input inevitably yields flawed computational results.
Q2.Which characteristic of a computer highlights its ability to perform repetitive tasks with equal accuracy and no tiredness? The correct answer is (b) Diligence — computers do not suffer from fatigue, boredom, or loss of concentration during lengthy execution runs.
Q3.Raw, unorganized facts and figures fed into a computer are known as: (c) Data is correct. Data consists of unprocessed facts, which turn into structured information once processed.
Q1.What is the primary role of an Operating System in a computer? Answer: (b) Acting as an interface between user and hardware. The OS manages system resources and abstracts hardware complexities.
Q2.Which of the following is an example of an open-source Operating System? The correct answer is (c) Linux — Linux source code is freely available, customizable, and distributed under open-source licenses.
Q3.The process of loading operating system files into main memory from storage upon startup is known as: (a) Booting is correct. Booting initializes hardware via BIOS/UEFI and transfers control to the OS kernel.
Q1.The individual page or working canvas of a presentation file is called a: Answer: (c) Slide. Slides form the sequential units containing text, multimedia, and graphics in presentation software.
Q2.Which key shortcut triggers the Slide Show from the very first slide? The correct answer is (a) F5 — pressing F5 launches fullscreen presentation mode from Slide 1 (Shift+F5 starts from the active slide).
Q3.Visual effects that occur when moving from one slide to the next are termed: (b) Slide Transitions is correct. Transitions define the animated motion style between adjacent slides.
Q1.What is the globally recognized protocol suite that powers the entire Internet? Answer: (b) TCP/IP. Transmission Control Protocol / Internet Protocol standardizes data packet transmission globally.
Q2.The unique alphanumeric address of a web document or resource on the Internet is known as a: The correct answer is (a) URL (Uniform Resource Locator) — it defines the exact location path of resources on the web.
Q3.Google Chrome, Mozilla Firefox, and Microsoft Edge are examples of: (c) Web Browsers is correct. Web browsers are client software applications that render HTML pages on the World Wide Web.
Q1.Ubuntu Linux is based on which prominent Linux distribution family? Answer: (a) Debian. Canonical built Ubuntu on the Debian codebase, using `.deb` packaging.
Q2.What is the name of the root superuser account with full administrative rights in Linux? The correct answer is (b) root — `root` represents the top-level administrative user in Unix/Linux operating systems.
Q3.Which command prefix allows authorized regular users to execute commands with administrative privileges in Ubuntu? (c) sudo is correct. `sudo` ("superuser do") grants temporary elevated administrative permissions safely.
Q1.What is the default desktop environment shipped with modern Ubuntu Linux releases? Answer: (b) GNOME. Ubuntu uses a customized GNOME Shell as its standard user interface.
Q2.The side application dock in the Ubuntu desktop interface used for launching pinned programs is called the: The correct answer is (a) Ubuntu Dock / Launcher — it sits on the left side by default to pin and switch active applications.
Q3.What is the default GUI file manager in Ubuntu Linux called? (c) Nautilus (Files) is correct. Nautilus is GNOME's native graphical file navigation manager.
Q1.The horizontal strip usually situated at the bottom of the Windows desktop is the: Answer: (b) Taskbar. The taskbar holds the Start menu button, active application icons, and the system clock notification area.
Q2.Deleted files and folders in Windows are temporarily moved to the: The correct answer is (c) Recycle Bin — files stay there until restored or permanently purged.
Q3.Which shortcut key combination permanently deletes a selected file without sending it to the Recycle Bin? (a) Shift + Delete is correct. This bypasses the Recycle Bin and deletes the item immediately.
Q1.The blinking vertical bar indicating where typed text will appear in a document is the: Answer: (a) Insertion Point / Cursor. The cursor highlights the position for upcoming text entry.
Q2.The word processing feature that automatically wraps text to the next line when reaching the right margin is: The correct answer is (b) Word Wrap — it eliminates the requirement to hit Enter at the end of each physical sentence line.
Q3.Which function key opens the Spell Check and Grammar review dialogue box? (c) F7 is correct. Pressing F7 launches automated proofing and spelling checks across the document.
Q1.In Microsoft Excel, every formula or calculation MUST start with which character? Answer: (b) =. Excel recognizes mathematical expressions and functions only if prefixed with an equal sign (`=`).
Q2.The intersection of Column D and Row 5 in an Excel worksheet is referenced as: The correct answer is (c) D5 — standard cell references list the column letter followed immediately by the row number.
Q3.Which function calculates the total sum of values within cells A1 through A10? (a) =SUM(A1:A10) is correct. `SUM` is the built-in function for computing continuous cell range additions.
Q1.What is the standard file extension used by modern Microsoft Word documents? Answer: (b) .docx. Word 2007 and newer store XML-based document files using the `.docx` format.
Q2.Which view in MS Word displays the document exactly as it will appear when printed? The correct answer is (a) Print Layout — it renders margins, headers, footers, and page splits as printed paper output.
Q3.Which shortcut key combination is used to find and replace text in MS Word? (b) Ctrl + H is correct. Ctrl + F opens Search, while Ctrl + H opens the Replace dialogue.
Q1.What is the base (radix) of the Hexadecimal number system? Answer: (c) 16. Hexadecimal uses 16 distinct symbols: digits 0-9 and letters A-F.
Q2.The binary equivalent of the decimal number (9)₁₀ is: The correct answer is (a) (1001)₂ — calculated as $8 + 0 + 0 + 1 = 2^3 + 2^0 = 9$.
Q3.In the hexadecimal number system, which letter represents the decimal value 12? (c) C is correct. A=10, B=11, C=12, D=13, E=14, and F=15.
Q1.What is the default slide orientation used in modern PowerPoint presentations? Answer: (a) Landscape. Standard presentation widescreen displays defaults to 16:9 Landscape mode.
Q2.Which feature is used to set global font styles, logos, and layouts for all presentation slides at once? The correct answer is (b) Slide Master — changes made in Slide Master automatically cascade down to every slide.
Q3.Which shortcut key immediately inserts a new blank slide into the current presentation? (c) Ctrl + M is correct. Ctrl + N opens a new presentation file, whereas Ctrl + M inserts a new slide.
Q1.Which type of memory is volatile and loses its contents as soon as power is turned off? Answer: (b) RAM. Random Access Memory requires constant electric power to preserve stored data bits.
Q2.What type of non-volatile storage contains the basic bootstrap startup instructions? The correct answer is (a) ROM (Read-Only Memory) — BIOS firmware is permanently retained in onboard ROM chips.
Q3.Which optical storage media typically holds up to 4.7 GB of data on a standard single layer? (b) Digital Versatile Disc (DVD) is correct. Standard CDs store ~700 MB, whereas DVDs store 4.7 GB.
Q1.What is the primary document containing the address list and names in a Mail Merge operation called? Answer: (b) Data Source. The Data Source maintains recipient records merged into the body of the main letter.
Q2.The process of combining two or more adjacent table cells into a single larger cell is known as: The correct answer is (a) Merging Cells — Merge combines multiple selected cells across columns or rows.
Q3.Placeholders placed in the main document representing variable fields from the data source are called: (c) Merge Fields is correct. Merge fields (e.g., `«First_Name»`) dynamically pull corresponding record data during generation.
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FAQs
For the 2026-27 session, MCQs and objective-type questions carry around 20% weightage. CBSE has introduced 30% competency based questions as MCQs and they are important part of the Class 9 Computer Science paper.
You can access the latest chapter-wise MCQs for Class 9 Computer Science for free from StudiesToday.com. All questions are based on the latest syllabus and current academic year.
Yes, our Computer Science practice bank includes the new pattern of Assertion Reasoning and Case Study based MCQs. They have been designed to test the analytical skills of Class 9 students.
Solving Class 9 Computer Science MCQs regularly improves speed and accuracy as these are objective questions can get you 100% marks if your understanding of the topic is clear.
Yes, all Class 9 Computer Science MCQs and answers are accessible on any device at your convenience.
No, all Computer Science Multiple Choice Questions (MCQs), practice papers, and solutions for Class 9 are available for free for students to get more marks school exams.