Master your objective exam preparation with complete SEBA Class 9 Computer Science Chapter 1 (Introduction to Computer System) Multiple Choice Questions (MCQs) and answers for the 2026–27 academic session. Includes textbook MCQs, extra objective questions, fill in the blanks, true/false statements, and detailed answer explanations on computer hardware, CPU units, memory, and software.
1. The word “Computer” originates from which language?
a) Greek
b) Latin
c) French
d) German
Answer: b) Latin
2. Which of the following is considered the “Brain” of a computer system?
a) Monitor
b) Hard Disk
c) Central Processing Unit (CPU)
d) Keyboard
Answer: c) Central Processing Unit (CPU)
3. The full form of CPU is:
a) Central Processing Unit
b) Control Processing Unit
c) Computer Processing Unit
d) Central Performance Unit
Answer: a) Central Processing Unit
4. Which component of the CPU performs mathematical operations like addition and subtraction?
a) Control Unit (CU)
b) Arithmetic and Logic Unit (ALU)
c) Primary Memory
d) Cache Memory
Answer: b) Arithmetic and Logic Unit (ALU)
5. Which unit of the CPU coordinates and directs all the operations of the computer system?
a) Arithmetic Logic Unit (ALU)
b) Control Unit (CU)
c) Register
d) Memory Unit
Answer: b) Control Unit (CU)
SEBA Class 9 Computer Science Chapter 1 MCQ
6. Raw facts and figures provided to a computer are known as:
a) Output
b) Information
c) Data
d) Instruction
Answer: c) Data
7. Processed data that conveys meaningful context is called:
a) Input
b) Data
c) Information
d) Memory
Answer: c) Information
8. The physical components of a computer that you can touch and see are called:
a) Software
b) Hardware
c) Firmware
d) Freeware
Answer: b) Hardware
9. Which of the following is an Input Device?
a) Printer
b) Monitor
c) Scanner
d) Speaker
Answer: c) Scanner
10. Which output device produces hard copies on paper?
a) Monitor
b) Printer
c) Speaker
d) Projector
Answer: b) Printer
Class 9 Computer Science Chapter 1 MCQ Question Answer SEBA 2026-27
11. What is the smallest unit of computer memory?
a) Byte
b) Nibble
c) Bit
d) Kilobyte
Answer: c) Bit
12. A collection of 4 bits is called a:
a) Byte
b) Nibble
c) Word
d) Kilobyte
Answer: b) Nibble
13. How many bits make up 1 Byte?
a) 4 bits
b) 8 bits
c) 16 bits
d) 32 bits
Answer: b) 8 bits
14. Which memory is volatile (loses its contents when the power is turned off)?
a) ROM
b) RAM
c) Hard Disk
d) CD-ROM
Answer: b) RAM
15. What does RAM stand for?
a) Read Access Memory
b) Random Access Memory
c) Rapid Access Memory
d) Real Access Memory
Answer: b) Random Access Memory
Introduction to Computer System Class 9 Objective Questions SEBA
16. Which memory stores permanent instructions needed to boot up the computer system?
a) RAM
b) ROM
c) Cache Memory
d) Registers
Answer: b) ROM
17. ROM stands for:
a) Read Only Memory
b) Random Only Memory
c) Run Only Memory
d) Real Operational Memory
Answer: a) Read Only Memory
18. High-speed memory located between the CPU and main memory to speed up processing is called:
a) Secondary Memory
b) Cache Memory
c) Virtual Memory
d) Flash Memory
Answer: b) Cache Memory
19. Which of the following is an example of Secondary Storage Memory?
a) RAM
b) ROM
c) Hard Disk Drive
d) Register
Answer: c) Hard Disk Drive
20. 1 Megabyte (MB) is equal to:
a) 1024 Bytes
b) 1024 Kilobytes (KB)
c) 1024 Gigabytes (GB)
d) 1000 Kilobytes (KB)
Answer: b) 1024 Kilobytes (KB)
Class 9 Computer Science Multiple Choice Questions Assam Board
21. Set of programs that manage and control the computer hardware is called:
a) Application Software
b) System Software
c) Utility Software
d) Firmware
Answer: b) System Software
22. Which of the following is an Operating System?
a) MS Word
b) Windows 10
c) Google Chrome
d) MS Excel
Answer: b) Windows 10
23. Software designed to help users perform specific tasks like drafting documents or editing photos is called:
a) System Software
b) Application Software
c) Firmware
d) Hardware
Answer: b) Application Software
24. Which of the following is an Application Software?
a) Linux
b) Windows
c) MS Paint
d) macOS
Answer: c) MS Paint
25. Antivirus programs, disk cleanup tools, and backup tools are examples of:
a) System Software
b) Utility Software
c) Custom Software
d) Hardware
Answer: b) Utility Software
26. Computer speed is measured in:
a) Megabytes (MB)
b) Gigahertz (GHz) / Hertz (Hz)
c) Inches
d) Meters per second
Answer: b) Gigahertz (GHz) / Hertz (Hz)
27. Which characteristic allows a computer to perform millions of calculations without making mistakes?
a) Speed
b) Diligence
c) Accuracy
d) Versatility
Answer: c) Accuracy
28. Which characteristic highlights that a computer never gets tired or suffers from lack of concentration?
a) Accuracy
b) Versatility
c) Diligence
d) Automation
Answer: c) Diligence
29. USB stands for:
a) Universal Serial Bus
b) United Serial Bus
c) Universal System Board
d) Universal Storage Bus
Answer: a) Universal Serial Bus
30. The basic block diagram of a computer system consists of:
a) Input Unit, Processing Unit, Output Unit
b) CPU, Monitor, Keyboard
c) Software, Hardware, User
d) Input Unit, Storage Unit, Processing Unit, Output Unit
Answer: d) Input Unit, Storage Unit, Processing Unit, Output Unit
💻 Exam Special MCQ Bank Notice: This page features a comprehensive set of SEBA Class 9 Computer Science Chapter 1 (Introduction to Computer System) Multiple Choice Questions (MCQs) & Objective Answers updated for the 2026–27 academic session. Practice these carefully curated objective questions on computer basics, memory hierarchy, and CPU architecture to secure 100% marks in your optical mark recognition (OMR) / objective paper sections.
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