Computer Science Class 11 MCQ

Computer Science Class 11 MCQs (Multiple Choice Questions) are an effective way to assess a student’s understanding of the subject. They are commonly used in school exams, including Class 11 Computer Science tests. These MCQs are carefully designed to cover key topics and concepts from the CBSE syllabus, with questions arranged chapter-wise for systematic practice. Prepared by teachers, the questions ensure that all important areas of the subject are included. They not only test comprehension but also assess a student’s ability to apply knowledge in real-world scenarios.

MCQs for Class 11 Computer Science Chapter wise

Chapter-Wise MCQs for Class 11 Computer Science – Question with Answer

Chapter 1: Computer System Overview

1. Which of the following is an input device?
   a) Printer
   b) Keyboard
   c) Monitor
   d) Speaker
   Answer: b) Keyboard
2. Which of these is volatile memory?
   a) ROM
   b) Hard Disk
   c) RAM
   d) DVD
   Answer: c) RAM
3. Which generation of computers used microprocessors?
   a) First
   b) Second
   c) Third
   d) Fourth
   Answer: d) Fourth

Chapter 2: Evolution of Computing Devices

4. The first mechanical calculating device was:
   a) Pascaline
   b) Abacus
   c) Difference Engine
   d) ENIAC
   Answer: b) Abacus
5. Who is known as the “Father of Computers”?
   a) Charles Babbage
   b) Alan Turing
   c) Blaise Pascal
   d) John von Neumann
   Answer: a) Charles Babbage
6. The ENIAC was developed in:
   a) 1920
   b) 1946
   c) 1960
   d) 1980
   Answer: b) 1946

Chapter 3: Software Concepts

7. System software includes:
   a) Word processor
   b) Operating system
   c) Browser
   d) Game
   Answer: b) Operating system
8. Which of the following is an example of application software?
   a) MS Word
   b) Linux
   c) Windows
   d) DOS
   Answer: a) MS Word
9. Freeware is:
   a) Paid software
   b) Free to use
   c) Open-source software only
   d) Illegal software
   Answer: b) Free to use

Chapter 4: Data Representation

10. Binary number 1010 in decimal is:
    a) 8
    b) 9
    c) 10
    d) 12
    Answer: c) 10
11. 1 Kilobyte (KB) =
    a) 1000 bytes
    b) 1024 bytes
    c) 1200 bytes
    d) 512 bytes
    Answer: b) 1024 bytes
12. ASCII code is used for:
    a) Numbers only
    b) Alphabets and symbols
    c) Graphics
    d) None
    Answer: b) Alphabets and symbols

Chapter 5: General Concepts of Programming

13. A programming language translator is:
    a) Compiler
    b) Interpreter
    c) Assembler
    d) All of these
    Answer: d) All of these
14. An algorithm is:
    a) A flowchart
    b) Step-by-step procedure to solve a problem
    c) A code written in Python
    d) A program output
    Answer: b) Step-by-step procedure to solve a problem
15. Which symbol is used in flowcharts for decisions?
    a) Circle
    b) Diamond
    c) Rectangle
    d) Oval
    Answer: b) Diamond

Chapter 6: Introduction to Problem Solving

16. A flowchart is used to:
    a) Design hardware
    b) Represent logic visually
    c) Write code
    d) Show memory
    Answer: b) Represent logic visually
17. The step-by-step solution to a problem is called:
    a) Syntax
    b) Algorithm
    c) Loop
    d) Function
    Answer: b) Algorithm
18. Debugging means:
    a) Finding errors in code
    b) Writing new code
    c) Designing flowcharts
    d) Deleting programs
    Answer: a) Finding errors in code

Chapter 7: Getting Started with Python

19. Python was developed by:
    a) Charles Babbage
    b) Dennis Ritchie
    c) Guido van Rossum
    d) James Gosling
    Answer: c) Guido van Rossum
20. In Python, print(2+3) gives:
    a) 23
    b) 5
    c) Error
    d) None
    Answer: b) 5
21. Which of these is a valid identifier in Python?
    a) 123name
    b) name_1
    c) name@12
    d) for
    Answer: b) name_1

Chapter 8: Python Fundamentals

22. Which of these is a mutable datatype?
    a) Tuple
    b) String
    c) List
    d) Integer
    Answer: c) List
23. The symbol for exponentiation in Python is:
    a) ^
    b) **
    c) ^^
    d) exp
    Answer: b) **
24. Data type of 3.14 in Python is:
    a) int
    b) float
    c) str
    d) double
    Answer: b) float

Chapter 9: Flow of Control

25. Which keyword is used for conditional statements?
    a) loop
    b) if
    c) switch
    d) case
    Answer: b) if
26. The loop that executes at least once is:
    a) for
    b) while
    c) do-while
    d) None
    Answer: c) do-while (not in Python, but in general)
27. In Python, range(5) generates:
    a) 0 1 2 3 4
    b) 1 2 3 4 5
    c) 5 values from 1 to 5
    d) Error
    Answer: a) 0 1 2 3 4

Chapter 10: Strings, Lists, Tuples, Dictionaries

28. Strings in Python are enclosed in:
    a) Single quotes
    b) Double quotes
    c) Triple quotes
    d) All of these
    Answer: d) All of these
29. Which of these is immutable?
    a) List
    b) Tuple
    c) Dictionary
    d) Set
    Answer: b) Tuple
30. Dictionary in Python stores data in:
    a) Sequential order
    b) Key-value pairs
    c) Tables
    d) Arrays
    Answer: b) Key-value pairs

Chapter 11: Functions in Python

31. Which keyword is used to define a function?
    a) func
    b) def
    c) function
    d) define
    Answer: b) def
32. A function that calls itself is known as:
    a) Loop
    b) Recursive function
    c) Inline function
    d) Constructor
    Answer: b) Recursive function
33. In Python, a function without return statement returns:
    a) 0
    b) null
    c) None
    d) Error
    Answer: c) None

Chapter 12: Introduction to Databases

34. A database is a collection of:
    a) Programs
    b) Data organized in a structured way
    c) Algorithms
    d) Variables
    Answer: b) Data organized in a structured way
35. Which of the following is a database management system?
    a) MySQL
    b) MS Word
    c) PowerPoint
    d) Python
    Answer: a) MySQL
36. Primary Key in a database means:
    a) Unique identifier
    b) A duplicate value
    c) A password
    d) None
    Answer: a) Unique identifier

Chapter 13: Database Concepts and SQL

37. SQL stands for:
    a) Structured Question Language
    b) Structured Query Language
    c) Simple Query Language
    d) Sequential Query Language
    Answer: b) Structured Query Language
38. Which SQL command is used to retrieve data?
    a) SELECT
    b) INSERT
    c) UPDATE
    d) DELETE
    Answer: a) SELECT
39. To remove a table from database, we use:
    a) DROP
    b) ERASE
    c) REMOVE
    d) CLEAR
    Answer: a) DROP

Chapter 14: Societal Impacts of IT

40. Cyber safety refers to:
    a) Safe use of internet
    b) Keeping passwords strong
    c) Avoiding cyberbullying
    d) All of these
    Answer: d) All of these
41. Digital footprint means:
    a) Physical footprint
    b) Traces left online by users
    c) A website design
    d) A file format
    Answer: b) Traces left online by users
42. E-waste refers to:
    a) Food waste
    b) Electronic waste
    c) Energy waste
    d) Environmental waste
    Answer: b) Electronic waste
43. Which of the following is an example of cybercrime?
    a) Hacking
    b) Phishing
    c) Identity theft
    d) All of these
    Answer: d) All of these
44. A strong password should contain:
    a) Only letters
    b) Letters and numbers
    c) Letters, numbers, and symbols
    d) Only numbers
    Answer: c) Letters, numbers, and symbols
45. Artificial Intelligence is mainly concerned with:
    a) Human learning only
    b) Making machines intelligent
    c) Data storage only
    d) Simple calculations
    Answer: b) Making machines intelligent

Importance of Class 11 Computer Science MCQs

1. Quick Revision of Concepts: MCQs provide a fast and effective way to revise important topics like Python programming, databases, algorithms, and networking concepts without going through lengthy notes.

2. Enhances Problem-Solving Skills: MCQs test analytical thinking and logic-building, especially in programming (Python functions, flow of control) and database queries (SQL). Solving them regularly sharpens decision-making skills.

3. Prepares for Exams: In school exams, MCQs help in covering the syllabus quickly.

• In board exams, they strengthen conceptual understanding, which is essential for descriptive answers.

4. Builds Accuracy and Speed: Since MCQs are time-bound, practicing them helps students develop speed in solving problems while maintaining accuracy, a skill very useful in exams.

5. Covers All Topics Systematically: MCQs are often designed chapter-wise, ensuring students don’t skip any topic, from basic computer systems to Python programming and societal impacts of IT.

6. Boosts Confidence: When students answer MCQs correctly, it builds confidence in their knowledge. Even wrong attempts are useful, as they highlight weak areas for improvement.

7. Application of Knowledge: Many MCQs are application-based, not just theory. This encourages students to apply programming and logic concepts to real-life problem-solving.