Computer Sc - Assessment Zone Text Book Exercises Solved
Assessment Zone
Here are the solutions for the assessment section on pages 140, 141, and 142.
A. Choose the correct answer.
Q1. The statement ‘C=C+1’ will be written in which of the following symbol?
Diamond, Rectangle, Parellelogram, Rectangle with rounded corners
Answer: b) Rectangle (The Process box).
Q2. Which of the following symbols is used to represent conditions in flowchart?
Diamond, Rectangle, parellogram, Rectangle with rounded corners.
Answer: a) Diamond (The Decision box).
Q3. Consider the following flowchart. What value will it display?
1, 2, 3, No value
Answer: b) 2.
(Explanation: C starts at 1. Since 1 is < =10, it follows the 'Yes' path. The output is 2 x C, which is 2 x 1 = 2. After printing, the flow stops.)
B. Fill in the blanks.
(Options: looping, connector, parallelogram, algorithm, rectangle)
Q1. The input/output box is represented by a ___________.
Answer: parallelogram.
Q2. Repeating a set of instructions until a specific condition is fulfilled is known as ___________.
Answer: looping.
Q3. The process box is represented by a ___________.
Answer: rectangle.
Q4. A ___________ is used to show a jump from one point in the process flow to another.
Answer: connector.
Q5. A good ___________ helps us to write effective and efficient programs.
Answer: algorithm.
C. Complete the following table.
| Symbol | Significance | Example |
| Diamond | It is used to test conditions and take decisions. | A > B |
| Parallelogram | It displays the output on the screen (or accepts input). | Print Sum |
D. Answer the following questions.
Q1. Define algorithm. What are its advantages?
Answer: An algorithm is a list of well-defined steps or instructions for completing a task systematically.
Advantages:
1. It helps us think logically to find the best solution.2. It serves as a basis for writing effective and well-organized programs.
Q2. Define flowcharts. State its significance.
Answer:
A flowchart is a diagrammatic or pictorial representation of steps taken to solve a problem.
Significance: It facilitates easy understanding of a solution and shows the order of operations clearly using standard symbols.
Q3. Define looping. Give an example of looping from real life.
Answer: Repeating a set of instructions until a specific condition is fulfilled is known as looping.
Real-life Example: Rinsing clothes in a washing machine until the soap is gone, or a athlete running laps around a track until they have completed 10 laps.
Q4. Differentiate between the Connector and Input/Output box symbols on the basis of the following parameters:
a) Purpose b) Symbol Used
Answer:
a) Purpose: The Input/Output box is used to enter data or display results. The Connector is used to join different parts of a flowchart that are split across pages.
b) Symbol Used: Input/Output uses a Parallelogram. Connector uses a Circle.
Activity Zone
A. Use Word to type algorithms for the following.
Q1. To calculate area and perimeter of a rectangle after accepting length and breadth.
Answer:
Start.
Input Length (L) and Breadth (B).
Calculate Area = L x B.
Calculate Perimeter = 2 x (L + B).
Display Area and Perimeter.
Stop.
Q2. To calculate the circumference of a circle after accepting the radius.
Answer:
Start.
Input Radius (R).
Calculate Circumference = 2 x 3.14 x R.
Display Circumference.
Stop.
Q3. To accept the age of a person and check whether he is eligible to vote or not.
Answer:
Start.
Input Age.
If Age > or = 18, then Display "Eligible to Vote".
Else, Display "Not Eligible to Vote".
Stop.
B. Write an algorithm and draw a flowchart for the following.
Q1. To check whether a number is positive or negative.
Algorithm:
Start.
Input Number (N).
If N >or= 0, then Display "Positive Number".
Else, Display "Negative Number".
Stop.
Q2. To calculate and display the table of 7.
Algorithm:
Start.
Initialize Counter (C) = 1.
While C <or=10:
a. Calculate Result = 7 x C.
b. Display Result.
c. Increment C = C + 1.
Stop.
Q3. To accept the age of a person and display the fare amount as per following conditions.
Algorithm:
Start.
Input Age.
If Age >or= 60, then Display "Fare = 4000".
Else if Age >or= 15 and Age < 60, then Display "Fare = 5000".
Stop.
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