Introduction to Programming and Algorithms Quiz - CBSE Class 9 Computer Science

Free practice quiz: Introduction to Programming and Algorithms (CBSE Class 9 Computer Science). 17 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 9 Computer Science practice quiz has 17 multiple-choice questions on Introduction to Programming and Algorithms, and 17 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which is the correct order of phases in the software development lifecycle?

   1. Design, Implementation, Testing, Maintenance, Planning
   2. Planning, Design, Implementation, Testing, Maintenance
   3. Design, Planning, Testing, Implementation, Maintenance
   4. Implementation, Design, Testing, Planning, Maintenance
   Show answer

   Answer: B. Planning, Design, Implementation, Testing, Maintenance

   The correct order is Planning, Design, Implementation, Testing, and Maintenance as per conventional software development lifecycles.

2. What will be the result of the following code: len('Algorithm')

   1. 8
   2. 9
   3. 10
   4. 7
   Show answer

   Answer: B. 9

   The len() function returns the number of characters in a string, including spaces. 'Algorithm' has 9 characters.

3. Which of the following is NOT a characteristic of a good algorithm?

   1. Ambiguity
   2. Finiteness
   3. Effectiveness
   4. Definiteness
   Show answer

   Answer: A. Ambiguity

   A good algorithm should be clear and unambiguous, meaning it should not have ambiguity.

4. Which Python keyword is used for creating functions?

   1. def
   2. fun
   3. function
   4. create
   Show answer

   Answer: A. def

   In Python, the 'def' keyword is used to define a function.

5. What is typically the first step in creating an algorithm?

   1. Writing code
   2. Identifying the problem
   3. Debugging
   4. Testing
   Show answer

   Answer: B. Identifying the problem

   The first step in creating an algorithm is to clearly identify and define the problem to be solved.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What does an algorithm typically begin with?
2. What data type is used for storing true or false values in Python?
3. In algorithm design, what is a 'decision point'?
4. What is pseudocode?
5. Which of these is a valid variable name in Python?
6. What does 'dry run' mean in the context of algorithms?
7. In the context of software development, what does the C in CASE tools stand for?
8. How does a computer execute an algorithm written in a high-level language?
9. What is an example of an infinite loop?
10. What is a flowchart?
11. What type of loop is while in Python?
12. What is recursion in computer programming?

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