MBOSE Class 10 Question Paper 2025 for Computer Science

Meghalaya Board of School Education

QUESTION
PAPERS

Total No. of Printed Pages—12
X/25/CSc

2025

COMPUTER SCIENCE
Full Marks : 80
Pass Marks : 24
Time : 3 hours
The figures in the margin indicate full marks for the questions

General Instructions :
(i) Please check that the Question Paper contains
55 questions.
(ii) 15 minutes time is given for the candidates to read the
Question Paper. The Question Paper will be distributed
15 minutes before the scheduled time of the
examination. In these 15 minutes, the candidates
should only read the instructions and questions
carefully and should not write answers on the Answer
Sheet.
(iii) For candidates without Internal Assessment, their
marks will be multiplied by 1·25 to adjust their total to
a maximum of 100 marks.
(iv) The Question Paper contains 4 Sections, Section—A, B,
C and D.
(v) Section—A contains Multiple Choice Questions (MCQ).
Choose the most appropriate answer from the given
options. The answers to this Section must be given in
the boxes provided in the Answer Sheet.
(vi) Section—B contains very short answer-type questions.
Answer the questions briefly, in minimum 3–4 lines.
(vii) Section—C contains short answer-type questions.
Answer the questions briefly giving suitable examples
(if needed), in minimum 5–6 lines.

/20 [ P.T.O.

( 2 )

(viii) Section—D contains long answer-type questions.
Answer the questions by explaining the related terms
or by writing proper programming codes.
(ix) If the questions meant for the visually handicapped
(Blind) students are answered by other students, they
will not be evaluated.

SECTION—A
( Maximum Marks : 30 )
( Multiple Choice Questions )

Attempt all questions : 1×30=30
1. It allocates memory to various applications at their
request and frees the memory when it is not in use.
(A) Process Management
(B) Resource Management
(C) Memory Management
(D) Utility Management
2. These are dedicated systems and their tasks are
processed immediately.
(A) Multitasking Operating Systems
(B) Batch Processing Operating Systems
(C) Time Sharing Operating Systems
(D) Real Time Operating Systems
3. Fingerprint recognition and face recognition devices have
made this system very sophisticated and useful.
(A) Reservation System Software
(B) Attendance System Software
(C) HR Management Software
(D) Billing and Accounting Software

X/25/CSc/20 [ Contd.

( 3 )

4. This command is used to configure the masterboot code.
(A) BOOTSECT
(B) ASSOC
(C) CHGUSR
(D) CHKDSK

5. We can open the terminal by pressing the following keys
in Ubuntu.
(A) Shift + Ctrl + U
(B) Ctrl + Alt + U
(C) Ctrl + Shift + T
(D) Ctrl + Alt + T

6. It is the process of waiting for the execution of tasks in
batch processing operating system.
(A) Printing
(B) Spooling
(C) Scanning
(D) Remote terminals

7. It was unveiled by Microsoft CEO Steve Ballmer in 2009.
(A) Lynx
(B) Bing
(C) Yahoo
(D) Mosaic

X/25/CSc/20 [ P.T.O.

( 4 )

8. In the Internet, computers are not connected directly to
each other rather they are connected to smaller networks
through
(A) routers
(B) modem
(C) gateways
(D) ethernet

9. It creates a unique account for each user and assigns
the user ID and password for accessing the Internet.
(A) ISP
(B) TCP
(C) HTTP
(D) SMTP

10. It is the latest technology that provides high-speed
wireless Internet and data network access over a wide
area and it uses
(A) telephone
(B) microwave
(C) cable network
(D) radio frequency

11. TCP is able to deliver the complete message in the
(A) duplicate form
(B) scanned form
(C) original form
(D) encrypted form

X/25/CSc/20 [ Contd.

( 5 )

12. The process of storing Websites on a Web server is called
(A) casting
(B) hosting
(C) nesting
(D) browsing

13. It is used to mark the end of the statement. It must be
included at the end of every statement in all C++
programs.
(A) Colon
(B) Semicolon
(C) Comma
(D) Exclamation mark

14. This data type in C++ represents null value.
(A) None
(B) Nil
(C) Null
(D) Void

15. All the precedence levels for operators can be
manipulated using
(A) parentheses
(B) square brackets
(C) curly braces
(D) underscores

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( 6 )

16. The value in the case level of switch statement can be
(A) statement
(B) expressions
(C) variable
(D) either a numeric or a character constant

17. In ‘while’ and ‘do-while’ loop, it is necessary to include
the increment or decrement step along with the other
processing statements. If they are not included, the loop
will become
(A) indefinite
(B) definite
(C) regular
(D) irregular

18. C++ program without closing curly braces } will show an
error message.
(A) Declaration terminated incorrectly
(B) Statement missing }
(C) Compound statement missing }
(D) Undefined symbol {

19. The JVM contains a hotspot-compiler which translates
performance critical bytecode instruction into _____
instruction.
(A) nature code
(B) source code
(C) native code
(D) object code

X/25/CSc/20 [ Contd.

( 7 )

20. It provides methods for querying and updating data in a
database.
(A) JDBC
(B) ODBC
(C) J2EE
(D) JSP

21. In Java, source code is called
(A) Sun microsystem
(B) interpreter unit
(C) JCreator
(D) compilation unit

22. They are reference-type data types that include objects
and arrays which are defined in a program.
(A) Primitive
(B) Non-primitive
(C) Boolean
(D) Double

23. This operating system is not capable of supporting Java.
(A) Linux
(B) DOS
(C) Windows
(D) macOS

24. Which of the following is not a Java IDE?
(A) Eclipse
(B) NetBeans
(C) BlueJ
(D) Creator

X/25/CSc/20 [ P.T.O.

( 8 )

25. This type of virus changes its code when it is passed
from one computer to another.
(A) Multipartite virus
(B) Polymorphic virus
(C) File infector virus
(D) Macro infector virus

26. The computer virus gets its name from the biological
virus meaning slimy liquid or poison in
(A) Greek
(B) English
(C) Latin
(D) Spanish

27. It was the first virus developed by Vyvojar in 1994 to
implement the technique of patchy infection.
(A) Creeper
(B) Melissa
(C) Zmist
(D) OneHalf

28. This type of data backup is used to store a copy of a file
at a remote online location.
(A) Incremental backup
(B) Absolute backup
(C) Online backup
(D) Drive imaging

X/25/CSc/20 [ Contd.

( 9 )

29. This security system in e-commerce maintains that your
information must be protected from unauthorized use.
(A) Privacy
(B) Integrity
(C) Authentication
(D) Non-repudiation

30. This firewall is set as an intermediary between recipient
and an external system.
(A) Packet filtering
(B) Proxy
(C) Inspection
(D) Protocols

SECTION—B
( Maximum Marks : 12 )
( Very Short Answer-type Questions )

From Question Nos. 31–39, answer any six : 2×6=12

31. Convert 4GB into equivalent KB.

32. Convert (124)10 to binary number.

33. Explain the purposes of DIRECTION and BEHAVIOR
attributes of <MARQUEE> tag.

34. Explain the two types of URL.

X/25/CSc/20 [ P.T.O.

( 10 )

35. What is the difference between = and == operators?

36. Write any two escape sequences and their purposes.

37. Define the terms ‘unary operator’ and ‘binary operator’.

38. Can a variable be declared and initialized together?
Explain using an example.

39. What are cipher and ciphertext?

SECTION—C
( Maximum Marks : 18 )
( Short Answer-type Questions )

From Question Nos. 40–48, answer any six : 3×6=18

40. Write the truth table of EXOR gate. Draw its logic symbol.

[ For the Visually Handicapped (Blind) Students
only in lieu of the above question ]

40. What is logic gate? Name the primary and secondary gates.

41. Perform binary addition of the following :
(11011)2  (11101)2  (101011)2

42. Explain the elements of <TABLE> tag.

43. Explain <FRAMESET> tag and its attributes ‘cols’ and
‘rows’.

X/25/CSc/20 [ Contd.

( 11 )

44. What is the purpose of ternary operator? Explain by using
an example.

45. What are the three types of errors that you may find while
compiling or executing a C++ program? Explain briefly.

46. Explain the three basic programming constructs
supported by Java.

47. Write a Java program to print the squares of the first five
multiples of 5.

48. Define the following terms :
(a) Information Technology
(b) Cyber Crime
(c) Hacker

SECTION—D
( Maximum Marks : 20 )
( Long Answer-type Questions )

From Question Nos. 49–55, answer any four : 5×4=20

49. Explain the purposes of the following commands in DOS
and Linux operating systems :
(a) CD\
(b) ATTRIB
(c) DOSKEY
(d) ls–a
(e) man cd

X/25/CSc/20 [ P.T.O.

( 12 )

50. Write the truth tables of NAND and NOR gates. Draw
their logic symbols.
[ For the Visually Handicapped (Blind) Students
only in lieu of the above question ]

50. What is number system? Explain the four standard
number systems.

51. Write the HTML code to display the following nested list in
a Web browser :
Computer Language
1. Programming Language
 JAVA
 C
 C++
2. Markup Language
 HTML
 DHTML
 XML

52. Write a C++ program to check and print whether a number
entered by a user is divisible by 5 or not.

53. Write a C++ program to print the sum of any n numbers
entered by the user.

54. Write a Java program to accept an alphabet and check
whether it is a vowel or a consonant.

55. Write any ten routine ways to protect your computer
system and data from cyber crimes.


X/25/CSc/20 K25—2250

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