ProGuide SLO Model Paper Computer Science 9th

Class: 9th
Subject:
Time Allowed: 2 Hours
Total Marks: 75

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Section A: Multiple Choice Questions (12 Marks)

(Time Allowed: 20 Minutes)
Attempt all questions. Each question carries 1 mark.
Choose the correct option:

1. Which of the following is a low-level programming language?
   a) Python b) C c) Assembly d) Java
2. A variable is:
   a) A fixed value b) A name for a memory location c) An operator d) None of the above
3. Which of the following is not an input device?
   a) Keyboard b) Mouse c) Printer d) Scanner
4. What is the full form of HTML?
   a) HyperText Markup Language b) HighText Markup Language c) HyperTool Markup Language d) None of these
5. In C++, which symbol is used for comments?
   a) // b) # c) & d) $
6. Which loop is known as an entry-controlled loop?
   a) while b) do-while c) for d) All of the above
7. Which gate is known as an inverter?
   a) AND b) OR c) NOT d) XOR
8. HTML tags are enclosed within:
   a) { } b) < > c) [ ] d) ( )
9. Which of the following is used for decision-making in programming?
   a) Loops b) Variables c) Control structures d) Functions
10. Which is an example of an output device?
    a) Monitor b) Mouse c) Keyboard d) Scanner
11. What does CPU stand for?
    a) Central Processing Unit b) Central Programming Unit c) Control Processing Unit d) Computer Processing Unit
12. Which of the following is used for user input in a program?
    a) cout b) cin c) printf d) scanf

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Section B: Short Questions (36 Marks)

Attempt any 9 questions. Each question carries 3 marks.

1. Define programming techniques and their types.
2. What is the difference between low-level and high-level languages?
3. Explain the role of a variable in a program.
4. Describe the purpose of input and output devices in a computer system.
5. What are HTML tags and attributes? Give examples.
6. Explain the concept of control structures in programming.
7. Write a short note on loops in programming.
8. What is the role of logical gates in computers?
9. Differentiate between ‘while’ and ‘do-while’ loops.
10. What is the use of conditional statements in programming?
11. Write a simple HTML code to display “Hello World.”
12. What is the function of the NOT gate in logic circuits?

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Section C: Long Questions (20 Marks)

Attempt any 2 questions. Each question carries 10 marks.

1. Write a C++ program to add two numbers entered by the user and display the result. Explain each part of the code.
2. Discuss in detail the different types of control structures in programming with examples.
3. Explain the structure of an HTML document and how to create a webpage using basic HTML elements.