Goa Board Class 11 Sample Paper 2025 Computer Science

2025

GOA BOARD
MODEL
PAPERS
Syllabus
Scheme of Question Paper

Prepare yourself for upcoming Goa
Board Exams

COMPUTER SCIENCE SYLLABUS
STD:-XI
UNIT-I
Computer Fundamentals:
➢ Functional components and their inter connections
➢ Steps involved in problem solving in computers
➢ File and Directory Commands in Linux Terminal or Windows Terminal (MSDOS)

UNIT-II
Data Representation of numbers :
➢ Decimal, Binary, Octal and Hexadecimal number System
➢ Internal Conversion between number systems Binary Arithmetic (addition, subtraction( 1's
complement, 2's complement), multiplication, division)

UNIT III
Programming in C:

Sr.No Topics Sub-Topic
.
1 Fundamentals of C Data Types,  The C character set
Programming Operations and  Structure of C
expressions program
 Data Types, C
keywords
 Constant and
variables
 Type declaration
 Operators
 Header files
2. Control Structures Basic input/Output  Formatted
Statements Input/Output
 Unformatted
input/Output

Conditional  if statement, if else
Statements statement

 for loop, while loop,
Loops do....while loop,
Nesting of loops
 The break and
continue Statement

Selection Statements  switch statement
3. Arrays and Arrays  Array Definition and
Functions declaration of one
dimensional array
1

Functions  Function definition
and declaration
 Local & Global
variables
 Parameter passing :
call by value,
 Passing array element
to a function
 Passing array to a
function

Standard Library:  strlen ( ),strcpy(),
String functions strcmp(), strcat()

Math functions
 log(),log10(), pow
( ),sqrt(), sin ( ), cos
( ) abs ( )

Character functions  isalnum ( ), isdigit ( ),
islower ( ), isupper
( ), isalpha ( ),
toupper( ), tolower( )
4 Dynamic data Pointers Structures  Introduction to
structure pointers
 call by reference
 Pointers to arrays
 Dynamic allocation
of memory for arrays
 Basic of structures
 Declaration of a
structure
 Nesting of structures
 Array of structures
 Pointer to structures

2

PRACTICAL LIST IN COMPUTER SCIENCE

FIRST TERM PRACTICAL LIST
PART I
1. Write a C program to find the Area of a triangle
2. Write a C program to interchange two values without using a third variable.
3. Write a C program to convert Centigrade to Fahrenheit

PART II ( if and if else Structure)

4. Write a C program to determine the largest of three numbers using if
statement.

5. Write a C program to determine the class of a student when marks in 6
subjects are given.

PART III ( while & do… while Loop)
6. Write a C program to determine the sum of the digit of a number using
while loop
7. Write a C program to generate the Fibonacci Series using the while loop. 10) 8. Write a C
program to determine the Reversal of a number using do.... while
loop.

PART IV (FOR lOOP)
9 . Write a C program to determine the summation of first n even numbers.
10. Write a C program to find the Factorial of a number

PART V (break and continue)

11. Write a C program to generate N Prime numbers

3

SECOND TERM PRACTICAL LIST
PART VI (switch Statement)

12. Write a C program to display the number of days in a given month
13. Write a C program to calculate the area of a sphere and cone depending on
users choice

PART VII (1 – D Arrays)
14. Write a C program to find the smallest number in a single dimensional
array
15. Write a C program to perform insertion and deletion of a number in an
array.

PART VIII (data structures)
16. Write a C program to perform linear search
17. Write a C program to perform bubble sort

PART IX (2 – D Arrays)

18. Write a C program to find the sum of each row and column in a matrix.
PART X (Functions)
19. Write a C program to find the transpose and check if the matrix is symmetric or not.

20. Write a C program to swap the content of two variable by using call by reference.
PART XI (Strings)
21. Write a C program to accept a line of text from the user and perform the following :-
1) count total number of vowels.
2) count total number of words
3) convert each lower case letter to upper case and vice-versa.

22. Write a C program to determine if the given word is a palindrome or not.

-----------------------------------------------------------------------------------------------

4

GOA BOARD OF SECONDARY AND HIGHER SECONDARY
EDUCATION
ALTO BETIM, BARDEZ – GOA

Sub:- Computer Science Class:- XI

Marks distribution as per the Term wise for the Academic Year 2024-25

Theory Practical
Term
Component Component
Mid Term 20 …...

First Term 60 20
Second Term 60 20

Project …. 20

Total 140 60

Average 140/2=70 60/2=30

5

GOA BOARD OF SECONDARY AND HIGHER SECONDARY
EDUCATION
ALTO BETIM, BARDEZ – GOA

Syllabus and Weightages to the content for the Academic Year 2024 - 25

Subject : Computer Science Class : XI

Topic wise weightage
Theory Component

Marks Allotted for
UNIT Chapter Mid Term First Term Second Term
(20) (60) (60)
I Computer Fundamentals (12) (05) ----

➢ Functional components and their 04 ---
----
inter connections
➢ Steps involved in problem solving in 06 05
computers
➢ File and Directory Commands in
Linux Terminal or Windows 02 ----
Terminal (MSDOS)

II Data Representation of numbers : (08) (10) ----
➢ Decimal, Binary, Octal and
Hexadecimal number System
04 05
➢ Internal Conversion between
number systems Binary Arithmetic
(addition, subtraction( 1's 04
complement, 2's complement), 05
multiplication, division)

III Programming in C: (45) ----

Fundamentals of C Programming 15 ----

Control Structures 30 ----

Arrays and Functions ----- 40

---- 20
Dynamic data structure
Total 20 60 60

6

DESIGN OF QUESTION PAPER
Mid - Term
Time : 1 Hour Max. Marks: 20
1. Weightage to learning outcomes :
Sr. No. Learning Outcomes Marks Percentage of Marks
1 Knowledge 05 25 %
2 Understanding 10 50 %
3 Application 05 25 %
Total 20 100%

2. Weightage to forms of question :

Sr. Forms of Questions Marks for Number of Total Marks
No. each question questions
1 MCQ’s 01 02 02
2 Very Short Answer Type 01 02 02
(VSA)
3 Short Answer Type 02 05 10
(SAI)
4 Short Answer Type 03 02 06
(SAII)
Total 11 20

3. Weightage to difficulty level of questions :

Sr. No. Estimated difficulty level of Marks Percentage of Marks
questions
1 Easy 04 20 %
2 Average 10 55 %
3 Difficult 05 25 %
Total 20 100%
4. Scheme of Option :

There will be no overall choice. However an internal choice of 3 marks will
be provided to question number 11.

7

DESIGN OF QUESTION PAPER
For First and Second Terminal Examination
Time : 2 and ½ Hour Max. Marks: 60
1. Weightage to learning outcomes :
Sr. No. Learning Outcomes Marks Percentage of Marks

1 Knowledge 15 25 %

2 Understanding 30 50 %

3 Application 15 25 %

Total 60 100%

2. Weightage to forms of question :
Marks for each Number of
Sr. No. Forms of Questions Total Marks
question questions
1 MCQ’s 01 07 07
Very Short Answer Type
2 01 06 06
(VSA)
Short Answer Type
3 02 10 20
(SAI)
Short Answer Type
4 03 05 15
(SAII)
Long Answer Type
5 04 03 12
( LA )
Total 31 60

3. Weightage to difficulty level of questions :
Sr. No. Estimated difficulty level of questions Marks Percentage of Marks
1 Easy 13 22 %
2 Average 35 58 %
3 Difficult 12 20 %
Total 60 100%

4. Scheme of Option :

There will be no overall choice. However internal choice for all three
4 marks questions.
1 | Page

EVALUATION SCHEME

First Term Practical Examination

Time : 2 hours Max. Marks: 20

01 program( Part I / Part II) = 0 5 marks
01 Program( Part III ,Part IV, Part V, Part VI) = 08 marks
Practical record ( Journal) = 04 marks
Viva on experiments and activities = 03 marks

Total = 20 marks

Second Term Practical Examination

Time 2 hours Max. Marks: 20

01 program( Part VII, Part XI) = 0 5 marks
01 Program( Part VIII, Part IX, Part X) = 1 0 marks
Practical record ( Journal) = 03 marks
Viva on experiments and activities = 02 marks

Total = 20 Marks

2 | Page

PROJECT
* The project will be allotted in groups of 1-3 students.

* Allotment of the project to be done at least before one month the
commencement of Second Term Examination. ( Students will get sufficient time
to the research work and plan the project)

* The project will be evaluated in the second term.

* Each student will submit hard copy project file Documentation in the
following order:-
Topic
Certificate
Declaration
Acknowledgement
Contents:- 1) Header file used
2) Working description
3) Coding
4) Output screen
5) Bibliography

Marks will be allotted to each student according to the following criteria:
1. Write-up( Modularity ) : 05 marks
2. Logical clarity : 04 marks
3. Relevant input :03 marks
4. Correct output :04 marks
5. Viva : 04 marks

Total : 20 marks

3 | Page

GOA BOARD OF SECONDARY AND HIGHER SECONDARY
EDUCATION

MODEL QUESTION PAPER

MID-TERM EXAMINATION
Subject:- COMPUTER SCIENCE

Std: XI
Time : 1 HOUR Max. Marks: 20 Total no. of Questions: 11

INSTRUCTIONS:
1. All questions are compulsory.
2. State your assumptions clearly.
3. MCQ’s are to be attempted only once.

1) Write the correct alternative from those given below: Which (1)
one is the Invalid Octal number representation.
A) (1234)8
B) (10101)8
C) (567)8
C) (678)8

2) Write the correct alternative from those given below: (1)
Which command of the following displayed filenames and extensions in
wide format
A) Dir/w
B) Dir/a
C) Dir/p
D) Dir/e
3) How the negative number represented in binary number system. (1)

4) How to create new directory in ms-dos. (1)

5) Write a short note on control unit. (2)

6) Write and explain the different steps involved in problem solving? (2)

7) Draw the flowchart to find the greatest of three numbers. (2)
8) Write short notes on:- (2)
1) Interpreter.
2) Compiler.

4 | Page

9) Draw and labeled the block diagram of a computer and its various components.
(2)
10) Perform the following binary arithmetic operations.
1) 101011 + 11011
2) 101111 - 111000( using 2’s compliment)
3) 10111011 / 111 (3)

11) Perform the following conversions. (3)
1) (101011)2 = ( )8
) (25.25)10 )2
2 = (
3) (1234)8 = ( )10

OR
11) Perform the following conversions. (3)
1) (2345)10 = ( )2
2) (7AB)16 = ( )10
3) (1100.111)2 = ( )10

*********END*********

5 | Page

(MODEL PAPER)

FIRST TERMINAL EXAMINATION

STD: XI MARKS: 60
SUBJECT: COMPUTER SCIENCE (H-4705)
TIME DURATION: 150 MIN

INSTRUCTIONS:-
(i) All questions are compulsory.
(ii) Programs should be written in Language C only.
(iii) State your assumptions clearly.
(v) Total Number of questions is 31.
(vi) There is no overall choice, however there is an internal
choice for question number 29,30 and 31.
(vii) Figures to the right indicate full mark.

1 Write the correct alternative from those given below: 1
Number with power 2 such as 32, 16, 4, 2, 1 are represented in the
form of binary integers as
• 110100
• 111110
• 110111
• 110110.

2 Write the correct alternative from those given below: 1
First step in process of problem solving is-------
• Design a solution
• Define a problem
• Testing
• Coding

3 Write the correct alternative from those given below:- 1
What is the output of the following C program
#include<stdio.h>
int main()
{
int var=052;
printf(“%d”,var);
return 0;
}
• 52

6 | Page

• 42
• 56
• Compiler error.

4 Write the correct alternative from those given below: 1
What is the output of the following C program fragment?
int a=1;
int b=1;
int c=++a || b++;
int d=b-- && --a;
printf(“%d%d%d%d”,a,b,c,d);
• 1111
• 0100
• 1001
• 1101

5 Write the correct alternative from those given below: 1
Sizeof operator return size in--------
⚫ Bits
⚫ Bytes
⚫ Megabytes
⚫ kilobytes
6 ASCII decimal range of characters from A….Z is? 1
⚫ 65-90
⚫ 97-122
⚫ 100-127
⚫ 1-28

7 Write the correct alternative from those given below: 1
What is the output of the following C program fragment?
int a=0,b=0;
int c=a++ + b++ + ++a;
int d=++a + ++b + c++;
printf("%d %d %d %d",a,b,c,d);
• 3237
• 3216
• 3326
• 3232

8 Convert the following algebric expression to C expression 1

(𝑎 + 𝑏)
(𝑎 − 𝑏)2
9 Define the term Keyword? 1
10 What is the purpose of comment statement in C language? 1
11 What is the difference between = and = = operators in C programming? 1

7 | Page

12 What is the significance of declaring a variable as an unsigned? 1
13 What extra step need to take to form the 2's complement of a negative 1
binary number?
14 What is Flowcharting? Draw different symbols used in flowcharting to 2
represent steps.
15 State two points of difference between compiler and interpreter. 2
16 Write any four rules of defining variables in C programming 2
Language?
17 Write any two header files with their purpose used in C programming 2
Language.
18 List Logical And Unary operators in C programming Language. 2
19 Any year is entered through the keyboard, write a C program to 2
determine whether the year is leap year or not. Use the logical
operators.
20 Perform the following conversion 2
(1010.110)2 = ( )10
(4589)10 = ( )16
21 Perform the following binary arithmetic operations. 2
1011111 + 1111111
10101010 – 11110000

22 #include <stdio.h> 2
int main()
{
int number, exp;
double result = 1.0;
printf("Enter the number: ");
scanf("%d", &number);
printf("Enter exponent: ");
scanf("%d", &exp);

// Missing code
printf("%d to the power %d is: %.0Lf", number, exp, result);
return 0;
}
Write the correct missing code to print the power of a given number
without using pow() function.

23 Consider the following program and write the correct missing code to 2
calculate the sum of positive integers entered by the user. Incase the
user enters a negative number, it should not be added to the sum.
#include<stdio.h>
Int main()
{
Int n,sum=0;
For(int i=1;i<=5;i++)

8 | Page

{
Printf(“\nEnter number”);
Scanf(“%d”,&n);
//Missing code
}
Printf(“\nThe sum is %d”,sum);
Return 0;
}

24 Write a complete C program to convert any given decimal number to its 3
binary equivalent.
25 Write a complete C program to print the sum of first and last digit of 3
any given number.
26 Write a complete C program to find the second largest integer number 3
from any three unique given numbers.
27 A positive integer is entered through the keyboard. Write a complete C 3
program to obtain and print the prime factors of this number.
Ex:- Prime factors of 24 are 2, 2, 2, and 3
28 3

#include <stdio.h>

int main()
{
int i, num, sum = 0;

printf("Enter any number ");
scanf("%d", &num);

for(i = 1; i <= num / 2; i++)
{

if(num%i == 0)
{
sum += i;
}
}

if(sum == num && num > 0)
{
printf("%d is PERFECT NUMBER", num);
}
else
{
printf("%d is NOT PERFECT NUMBER", num);
}

9 | Page

return 0;
}
Alter any three instructions from above code and write modified code
to check given number is Prime Number or not.
29 Perform the following conversion 4
1) (101010)2= ( )10
2) (1234)10 = ( )2
3) (123)8 = ( )2
4) (10101010)2 = ( )8
OR
29 Perform the following conversion
5) (101010)2= ( )16
6) (1234)10 = ( )8
7) (123)8 = ( )16
(10101)2 = ( )10
30 Write a complete C program to check if the given number is Happy 4
Number or Not .
Note:- Happy number is a any positive integer, replace the number by
the sum of the squares of its digits, and repeat the process until
the number either equals 1, or it will end at '4'. if Number is 1 than it is
Happy Number else if it end at 4 it is not Happy.
For Ex:- To check whether 19 and 25 are happy or not
N=19 N=25
N=12+92 =82 N=22+52=29
N=82 + 22 = 68 N=22+92=85
N=62 + 82 = 100 N=82+52=89
2 2 2
N=1 +0 +0 = 1 N=82+92=145
N=1 i.e its Happy Number N=12+42+52=42
N=42 +22=20
N=22+02=4
N=4 so number is Not Happy Number

OR
30 Write a complete C program to check Given two numbers are amicable
numbers or not

Note:- Two different numbers are said to be so Amicable Numbers if
each sum of divisors is equal to the other number.
Amicable Numbers are: (220, 284), (1184, 1210), (2620, 2924), (5020,
5564), (6232, 6368) etc.

Example– 220 and 284 are Amicable Numbers.

Divisors of 220 = 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110

10 |
Page

1+2+4+5+10+11+20+22+44+55+110=284

Divisors of 284 = 1, 2, 7, 71, 142

1+2+7+71+142=220

31 Write the output of following programs

1) 2) 4
int main() int main()
{ {
int i = 1; int x;
do x = 10;
{
printf("%d\n", i); if(x > 10)
i=i+2; x -= 10;
if (i % 5==0) else if(x >= 0)
break; x += 00;
} while (1); else if(x)
x += 10;
getchar(); else
return 0; x -= 10;
}
printf("%d\n",x);
return 0;
}

3. 4.
int main() int main()
{ {
int a = -10, b = 20; int a= -1,b = -a;
int x,y;
if(a > 0 && b < 0)
a++; x = (a> 0) && (b < 0) || (a<
else if(a < 0 && b < 0) 0) && (b > 0);
a--; y = (a<= 0) || (b >= 0) &&
else if(a < 0 && b > 0) (a>= 0) || (b <= 0);
b--;
else printf("%d\n",x == y);
b--;
return 0;
printf("%d\n",a + b); }
return 0;
}

11 |
Page

31 OR
1. 2.
int main() int main()
{ {
int x = 400, y, z; int p = 800, q, r;
if (x >= 500)
y = 400; if (p >= 700)
z = 300; q = 600;
printf("%d %d\n", y, z);
r = 500;
return 0;
} printf("%d %d\n", q, r);

return 0;
}
3. 4.
int main() int main()
{ {
int p = 4, q, r; int i = 0;
do
q = p = 15; {
r = p < 15; i++;
if (i == 2)
printf("p = %d q = %d r continue;
= %d\n", p, q, r); printf("In while loop ");
} while (i < 2);
return 0; printf("%d\n", i);
} }

12 |
Page

SUB: COMPUTER SCIENCE(H4705)
STD: XI
SECOND TERMINAL EXAM MODEL PAPER 2024-25
MARKS: 60
Instructions:
1. All questions are compulsory.
2. Question 1 to 7 must be attempted once.
3. Programs should be written in C language only.
4. SECTION A & B carry 1 mark each.
SECTION C carry 2 marks each.
SECTION D carry 3 marks each.
SECTION E carry 4 marks each.
SECTION A
Q.1 Which of the following function is more appropriate for reading 1
multiword in a string?
a. scanf()
b. printf()
c. gets()
d. string()
Q.2 Size of the array need not be specified, when 1
a. initialisation is a part of definition
b. it is a declaration
c. it is calling of function
d. All of the above.
Q.3 Choose correct statement about Functions in C Language. 1
a. A Function is a group of c statements which can be reused
any number of times
b. Every Function need to be call to execute.
c. Every Function may or may not return a value
d. All of the above
Q.4 Which of the following is a complete function. 1
a. int funct(int x);
b. int funct(int x){return x++;}
c. int funct(int){printf(“x”);}
d. int funct(x){printf(“x”);}
Q.5 What is the length of an array when its first index denoted by i and 1
the last index denoted by j?
a. length of an array=i+j;
b. length of an array=j-i-1;
c. length of an array=j-1;
d. length of an array=j-i+1;

Q.6 The operator used to get value at address stored in a pointer 1
variable is

13 |
Page

a. * b. & c. && d. ||

Q.7 If the two string are identical , then strcmp() returns 1
a. -1
b. 1
c. 0
d. NULL
SECTION B
Q.8 Define an Array. 1
Q.9 State the precondition to perform binary search. 1
Q.10 What is a pointer? 1
Q.11 Define Structure. 1
Q.12 Write the names of the header files to which the following 1
functions belong:
i) strcat() ii) pow()
Q.13 Consider the following declaration statement: 1
void sample(int x, int y, int z=10);
State the concept involved in above declaration.
SECTION C
Q.14 Binary search is more efficient than linear search. Why? 2
Q.15 State any two points of difference between Array and Structure. 2
Q.16 State the different function prototypes used in C. 2
Q.17 Perform insertion sort in ascending order on the following list of 2
numbers
8 , 20, 3, 6, 5, 10 . And display the content of array after each
pass.
Q.18 State any two points of difference between call by value and call by 2
reference.
Q. 19 What are the benefits of Structure in C programming? 2
Q. 20 #include <stdio.h> 2
void junk(int *i, int *j);
int main()
{
int i=5,j=2;
junk(&i,j);
printf(“\n %d%d”,i,j);
return 0;
}
Void junk(int *i, int j)
{
*i=*i * *i;
j=j*j;
}
Q.21 Write a user defined function named sumofdigits() to find the sum 2
of the digits of the given N number. for. e.g if N=234
sum=2+3+4=9

14 |
Page

Q.22 What are the uses of Pointers? 2
Q.23 Write a complete C program to count number of words in a given 2
string.
SECTION D
Q.24 Explain various string functions used in C programming. 3
Q. 25 Write a complete C program to swapping the values of two 3
variables by illustrating the concept of call by value and call by
reference.
Q.26 Write a Complete C program to check whether given word is 3
palindrome or not with out using library string functions.
Q.27 Write a complete C program to search element using Binary search 3
techniques
Q.28 Write a complete C program to illustrate the concept of call by 3
value and call by reference.
SECTION E
Q.29 Write a complete C program to perform Bubble sort technique to 4
sort elements in Ascending order.
Q.30 Consider the following structure declaration : 4
struct customer
{
int acc_no;
char name[20];
float bal;
};
Struct customer cust[200];
void withdrawal(int ano,float amount);
Define the above function withdrawal to withdraw the amount:-
1) Withdrawal amount should be minimum Rs.100.
2) Minimum balance amount in account should be Rs.100.
3) If the balance in account is less than 100 than print message
balance is insufficient as well as balance in account.
Q.31 Define a function MERGE() that passes two 1-D array A[], B[], 4
which are in ascending order as an parameter and m , n of integer
type that passes size of array A and B respectively. Merge the two
A[] and B[]arrays in C[] array in ascending order.
if A[]={1,3,5,6} and B[]={2,4,7,9}
then array is C[]={1,2,3,4,5,6,7,9}
OR
Q.31 Write a compete C program to find length of string, total number of 4
words in string without using any library string functions.

SIGNATURE OF CONVENOR

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Page

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