MBOSE Class 11 Question Paper 2023 for Computer Science

Total No. of Printed Pages ––7 (2)
(ii) ASCII is a 7 bit code for _____
(a) letters
2023
(b) numbers
COMPUTER SCIENCE
(c) other symbols
( Theory )
(d) All of these.

Full Marks : 70
(iii) You don’t have to pay for Python and you can
Time : 3 hours view its source code too. It means Python is ____
(a) Free and open source
The figures in the margin indicate full marks for the questions
(b) Freeware
General Instructions : (c) Open source

(i) Write all the answers in the Answer Script. (d) Shareware.

(ii) Attempt all the questions.
(iv) An empty/null statement in Python is ______
(a) go
1. Choose the correct answer from the following 1 6  6
(b) pass
(i) Operating system is an example of
(c) over
(a) Application software (d) ;

(b) Utility program
(v) What will be the output of the following code?
(c) System software tp1 = (2, 4, 3)
tp2 = tp1 * 2
(d) None of the these.
print (tp2)

HS/XI/A.Sc.Com./CS/23 HS/XI/A.Sc.Com./CS/23

(3) (4)

(a) (4, 8, 6) 3. Answer the following questions (any three) : 23  6

(b) (2, 4, 3, 2, 4, 3) (i) What is the need for secondary memory?

(c) (2, 2, 4, 4, 3, 3,) (ii) Convert any two of the following:

(d) Error (a) (106)10 = (?)2

(b) (10010)2 = (?)8
(vi) Using someone else’s twitter handle to post (c) (Face)16 = (?)2
something will be termed as :
(iii) Prove that x.( x + y ) = x by truth table method.
(a) Fraud
(iv) Design a logic circuit for Boolean expression:
(b) Identity theft
A  BC  D
(c) Online stealing

(d) Violation
4. Answer the following questions (any six) : 2  6  12

(i) Write an algorithm/flowchart/program to find
2. Answer the following in two or more sentences: 1 6  6 area and perimeter of a rectangle.
(i) Is Python case sensitive? What is meant by the
(ii) What is the purpose of range ( ) function? Give
term case-sensitive? one example.
(ii) Which function converts the value to string? (iii) What are complex numbers? How would Python
represent complex number with real part as 3
(iii) What is atom in context of expression? and imaginary part as –25?

(iv) What is the used of pop ( ) method in a list? (iv) Given a string S, write expressions to print

(v) What do you mean by associativity on operators? (i) First five characters of S

(vi) What is a threat in computer? (ii) Reversed S

HS/XI/A.Sc.Com./CS/23 HS/XI/A.Sc.Com./CS/23

(5) (6)

(v) What is a statement? What is the significance of 6. (i) State DeMorgan’s theorem. 1
an empty statement?
(ii) Find the complement of expression: 2
(vi) What are the different ways of creating empty
dictionary? A B  BC D

(vii) Differentiate between append ( ) and extend ( ) in Or
context to list.
What are the major functional components of a
(viii) How are tuples different from lists when both are computer system? 3
sequences?

7. Answer the following questions (any four): 3  4  12
5. Answer the following questions (any five): 2  5  10 (i) Write a python program to calculate simple
(i) What is digital footprints? What are the different  P R  T
interest SI  .
forms of digital footprints?  100 

(ii) What are the damages that can caused by Adware? (ii) What are Relational operators? How many
relational operators are available in Python?
(iii) What do you understand by plagiarism? Explain with examples.

(iv) What are the key benefits of e-waste Recycling? (iii) Differentiate between split ( ) and partition ( ) in a
string.
(v) What security measures can you take up to
prevent from Eavesdropping?
(iv) Write a program to find the largest/ smallest
number in a list/tuple.
(vi) Define the following terms:

(a) OSS (v) What is debugging? Why are logical errors harder
to locate?
(b) FOSS
(vi) Write a python program to calculate factorial of a
(vii) Differentiate between freeware and free software. given number.

HS/XI/A.Sc.Com./CS/23 HS/XI/A.Sc.Com./CS/23

(7)

8. Why should intellectual property rights be protected? 3
Or
Give examples of software, hardware that may be used
for special needs students. 3

9. Answer any three from the following: 4  3  12

(i) Write a program that input a number and test if
it is a prime number.

(ii) What are nested tuples? How can we access
individual elements of inner tuple? Explain with
examples.

(iii) How will you delete an element from a Dictionary?
Explain with example.

(iv) Differentiate between break and continue
statements using examples.

(v) Evaluate the following Python expressions:
a, b, c = 10, 5, 3.0

(a) a + b**2 – a%c

(b) (b<a) and (a<b) or (c<a) and not b<a

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