माध्यमिक शिक्षा बोर्ड, राजस्थान, अजमेर
पाठ्यक्रम सत्र 2025–2026 | Model Question Paper
Computer Science
Class — 11
विषय कोड — 03
| इकाई (Unit) | विषय | अंक |
|---|---|---|
| Unit I | Computer Systems and Organisation | 10 |
| Unit II | Computational Thinking and Programming | 45 |
| Unit III | Society, Law and Ethics | 15 |
| Theory Total | 70 | |
| Practical (Separate) | 30 | |
General Instructions / सामान्य निर्देश :
- सभी प्रश्न अनिवार्य हैं। / All questions are compulsory.
- प्रत्येक प्रश्न के अंक उसके सामने अंकित हैं।
- जहाँ विकल्प दिया गया हो, वहाँ केवल एक प्रश्न हल करें।
- Python programs clearly indented लिखें। Indentation marks carry weightage.
- Section A (MCQ) में सही विकल्प की क्रमांक संख्या लिखें।
SECTION — A : Objective Type Questions 20 Marks
Q.1–4 : MCQ (1 mark each) | Q.5 : Fill in the Blanks | Q.6 : True/False | Q.7 : Match the Following
Q. 1.5 × 1 = 5 Marks
Choose the most appropriate option : (Unit I — Computer Organisation)
- Which of the following is the correct ascending order of memory units ?
- Which type of memory is volatile and directly accessed by the CPU ?
- The Boolean expression for NAND gate output of inputs A and B is —
- The decimal equivalent of binary number 1011.101 is —
- Which cloud service model provides a platform for developers to build and deploy applications without managing underlying infrastructure ?
Q. 2.8 × 1 = 8 Marks
Choose the most appropriate option : (Unit II — Python Programming)
- What is the output of the following ?
print(type(3.14))
- Which of the following is an immutable data type in Python ?
- What will
len("Hello World")return ? - What is the output of
[1, 2, 3] * 2? - Which keyword is used to define a function in Python ?
- What is the output of the following code ?
s = "RAJASTHAN" print(s[2:6])
- Which Python operator checks if two variables refer to the same object in memory ?
- What is the output of
range(1, 10, 3)?
Q. 3.2 × 1 = 2 Marks
Choose the most appropriate option : (Unit III — Society, Law and Ethics)
- Which of the following is NOT a type of Intellectual Property Right ?
- The practice of sending fraudulent emails disguised as legitimate sources to steal sensitive information is called —
Q. 4. Fill in the Blanks :3 × 1 = 3 Marks
(i) The hexadecimal equivalent of decimal number 255 is .
(ii) In Python, the function is used to find the number of elements in a list.
(iii) is the law in India that governs electronic commerce and cyber crimes.
(ii) In Python, the function is used to find the number of elements in a list.
(iii) is the law in India that governs electronic commerce and cyber crimes.
Q. 5. State True or False :3 × 1 = 3 Marks
- A compiler translates the entire source code at once, while an interpreter translates line by line.
- In Python, a tuple can be modified after creation.
- De Morgan's Law states : A + B = A · B
Q. 6. Match Column A with Column B :4 × ½ = 2 Marks
| Column A (Term) | Column B (Description) |
|---|---|
| (i) ASCII | (a) A Python data structure that stores key-value pairs |
| (ii) Dictionary | (b) 7-bit encoding scheme for English characters |
| (iii) Machine Learning | (c) Software that locks files and demands ransom |
| (iv) Ransomware | (d) A subset of AI that enables computers to learn from data |
SECTION — B : Short Answer Type Questions 25 Marks
Each question carries 2 or 3 marks as indicated | Attempt all questions
Q. 7.3 Marks
Perform the following number system conversions, showing all steps :
- Convert (101110.11)₂ to Decimal
- Convert (175)₁₀ to Hexadecimal
- Convert (3F8)₁₆ to Binary directly
Q. 8.3 Marks
(a) Construct the complete truth table for the Boolean expression : F = A · B̄ + Ā · B (This is XOR — verify it.) (2 Marks)
(b) State and verify one of De Morgan's Laws using a truth table for A = 1, B = 0. (1 Mark)
Q. 9.3 Marks
Answer the following Python questions :
- What is the difference between interactive mode and script mode in Python ? (1 Mark)
- What will be the output of the following code ? Explain each step. (2 Marks)
x = 10 y = 3 print(x // y, x % y, x ** y)
Q. 10.3 Marks
Write a Python program to check whether a given number is Positive, Negative, or Zero using if-elif-else. (2 Marks)
What will be the output of the following code ? (1 Mark)
for i in range(1, 6):
if i == 3:
continue
print(i, end=" ")
Q. 11.3 Marks
Answer the following about Python Strings :
- What is string slicing ? Give the output of
"COMPUTER"[1:5:2]. (1 Mark) - Write the output of the following : (2 Marks)
s = " Hello World " print(s.strip()) print(s.upper()) print(s.replace("World", "Python")) print(s.split())
Q. 12.3 Marks
Consider the list:
L = [45, 12, 78, 34, 56, 90, 23]- Write Python statements to : (i) append 100, (ii) remove 34, (iii) sort the list in descending order. (1½ Marks)
- Write a Python program to find the maximum and minimum values from the above list without using built-in functions
max()ormin(). (1½ Marks)
Q. 13.3 Marks
Answer the following questions on Tuples and Dictionaries :
- What is the key difference between a List and a Tuple ? When would you prefer to use a Tuple ? (1 Mark)
- Consider the dictionary :
d = {'name':'Ravi', 'age':17, 'city':'Jodhpur'}
Write Python statements to : (i) add a new key'score':95, (ii) delete the key'city', (iii) print all keys. (2 Marks)
Q. 14.2 Marks
Write a Python function
factorial(n) that takes a positive integer n as argument and returns its factorial using a for loop. Call the function for n = 6 and print the result.
Q. 15.2 Marks
Answer any TWO of the following in about 30–40 words each :
- What is a Digital Footprint ? Give two examples of passive digital footprints.
- Differentiate between Copyright and Patent with one example each.
- What is E-waste ? Why is its proper disposal important for the environment ?
Q. 16.3 Marks
Answer the following about Python Modules :
- What is the difference between
import mathandfrom math import sqrt? (1 Mark) - Write Python code to : (i) find √144 using math module, (ii) generate a random integer between 1 and 100, (iii) find the mean of [10, 20, 30, 40, 50] using statistics module. (2 Marks)
SECTION — C : Long Answer Type Questions 25 Marks
Each question carries 5 marks | Internal choice given in Q.17, 19, 21
Q. 17.5 Marks
(a) Explain the following with one example / diagram each : (3 Marks)
- Primary Memory vs Secondary Memory (any 3 differences)
- System Software vs Application Software
- Compiler vs Interpreter
(b) What are the five functions of an Operating System ? Explain any two in brief. (2 Marks)
OR
(a) Explain the following encoding schemes with their character range : (3 Marks)
- ASCII (American Standard Code for Information Interchange)
- ISCII (Indian Standard Code for Information Interchange)
- UNICODE (UTF-8 and UTF-32)
(b) Draw the logic circuits and write truth tables for : (i) NAND gate, (ii) NOR gate. (2 Marks)
Q. 18.5 Marks
(a) What are the steps involved in Problem Solving ? Briefly explain each step. (2 Marks)
(b) Draw a flowchart AND write the corresponding pseudo-code for the following problem : (3 Marks)
"Accept 10 numbers from the user and find their sum and average."
"Accept 10 numbers from the user and find their sum and average."
Q. 19.5 Marks
Write complete Python programs for the following : (2½ + 2½ Marks)
- Print the following pattern using nested loops :
* * * * * * * * * * * * * * * - Find the sum of the series : S = 1² + 2² + 3² + ... + n² for user-input value of n, using a
forloop.
OR
Write complete Python programs for the following : (2½ + 2½ Marks)
- Accept a number from the user and check if it is a Prime number.
- Write a program that accepts a list of n numbers and performs Linear Search for a target value. Print "Found at index [i]" or "Not Found."
Q. 20.5 Marks
(a) Write a Python function
count_vowels(s) that takes a string as argument and returns the count of vowels (a, e, i, o, u — both upper and lower case) in it. Test it with the string "Computer Science Rajasthan". (2½ Marks)(b) What is the difference between local and global variables in Python ? Write a program that demonstrates the use of the
global keyword. (2½ Marks)
Q. 21.5 Marks
(a) Explain the Bubble Sort algorithm with a step-by-step dry run on the following list : (3 Marks)
arr = [64, 25, 12, 22, 11](b) Write a Python function
bubble_sort(lst) that sorts the given list in ascending order using Bubble Sort and returns the sorted list. (2 Marks)OR
(a) Write a Python program that : (3 Marks)
- Creates a dictionary of 5 students with their names as keys and marks as values (accept from user).
- Displays the name of the student with the highest marks.
- Counts how many students scored above 75.
(b) What is the Insertion Sort algorithm ? Write its Python implementation for the list
[5, 3, 8, 1, 9]. (2 Marks)
🔗 संबंधित लिंक – RBSE Class 11 Computer Science 2026
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