9th Class Computer Chapter 4 TestCOMPUTATIONAL THINKING

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Errors that happen when the algorithm or flowchart is being executed are called:

   1. Syntax Errors

   2. Logical Errors

   3. Runtime Errors

   4. Debugging Errors

2. Example of Big O notation is:

   1. O(n), O(log n), O(n²)

   2. O+1, O-1, O_2

   3. O(10), O(100), O(1000)

   4. O(T), O(S)

3. Breaking a problem into smaller, more manageable sub-problems is called:

   1. Problem Understanding

   2. Solution Selection and Design

   3. Problem Simplification

   4. Abstraction

4. ........ is a step-by-step collection of instructions to solve a problem or complete a task.
   

   1. Procedure

   2. Algorithm

   3. Method

   4. Technique

5. Dry run helps to: 

   1. Hide errors
      

   2. Find errors manually

   3. Reduce code size

   4. Delete variables

6. The main advantage of flowcharts is:

   1. They run directly on a computer

   2. They provide a clear and concise way

   3. They are faster to write than pseudocode

   4. They eliminate the need for algorithms

7. Flowchart is a representation of steps to be followed to solve a problem. 

   1. Graphical 

   2. Historical 

   3. Numerical

   4. Textual 

8. Simulation helps to explore:
   

   1. Software installation

   2. Different scenarios and situations
      

   3. Hardware parts

   4. Internet speed

9. An example of a Syntax Error is:

   1. Using the wrong symbol
      

   2. Dividing by zero

   3. Using the wrong condition

   4. Getting the wrong output

10. Which of the following is true about simulation?

    1. Saves time and cost

    2. Increases risk

    3. Wastes resources

    4. None of these