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Computer Science 1 Official Board Paper 2025-2026 HSC Science (Computer Science) 12th Standard Board Exam Question Paper Solution

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Computer Science 1 [Official Board Paper]
Marks: 50 Maharashtra State Board
HSC Science (Computer Science)

Academic Year: 2025-2026
Date & Time: 6th March 2026, 11:00 am
Duration: 3h
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Instructions: 

  1. All questions are compulsory.
  2. Figures to the right indicate fill marks.
  3. Use of any type of calculator not allowed.
  4. Draw a near diagram whenever necessary.

[10]1.
[4]1. (A) | Select the correct alternative and rewrite the following:
[1]1. (a)

Windows NT is ______ operating system.

Multiuser

Multitasking

Multithreading

All of the above

Concept: undefined - undefined
Chapter:
[1]1. (b)

The most efficient search algorithm is ______.

Binary search

Reverse search

Linear search

Pointer search

Concept: undefined - undefined
Chapter:
[1]1. (c)

A derived class with several base classes is ______ inheritance.

Multiple

Hierarchical

Single

Multilevel

Concept: undefined - undefined
Chapter:
[1]1. (d)

To place the image into HTML file ______ attribute is used in <IMG> tag.

URL

ALT

SRC

HREF

Concept: undefined - undefined
Chapter:
[6]1. (B) | Answer any two of the following:
[1]1. (B) (a) (i)

List any four system call in Information Management.

Concept: undefined - undefined
Chapter:
[1]1. (B) (a) (ii)

Write any two system calls of process management.

Concept: undefined - undefined
Chapter:
[1]1. (B) (a) (iii)

Write any two system calls of memory management.

Concept: undefined - undefined
Chapter:
[3]1. (B) (b) (i)

What is Data Structure? 

Concept: undefined - undefined
Chapter:
[1]1. (B) (b) (ii)

List different types of linear data structures.

Concept: undefined - undefined
Chapter:
[1]1. (B) (b) (iii)

List different types of nonlinear data structures.

Concept: undefined - undefined
Chapter:
[3]1. (B) (c)

Enlist different built-in data types in C++ with their size.

Concept: undefined - undefined
Chapter:
[10]2.
[6]2. (A) | Answer any two of the following:
[3]2. (A) (a)

Differentiate between call by value and call by reference. 

Concept: undefined - undefined
Chapter:
[1]2. (A) (b) (i)

What is Record?

Concept: undefined - undefined
Chapter:
[2]2. (A) (b) (ii)

Explain how records are represented in memory using an array?

Concept: undefined - undefined
Chapter:
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[1]2. (A) (c) (i)

What is an operating system?

Concept: undefined - undefined
Chapter:
[2]2. (A) (c) (ii)

Write any four functions of the operating system.

Concept: undefined - undefined
Chapter:
[4]2. (B) | Answer any one of the following:
[1]2. (B) (a) (i)

What is inserting?

Concept: undefined - undefined
Chapter:
[3]2. (B) (a) (ii)

State algorithm for inserting an element in an Array.

Concept: undefined - undefined
Chapter:
[2]2. (B) (b) (i)

Explain the following term in brief:

Tape - based file system

Concept: undefined - undefined
Chapter:
[2]2. (B) (b) (ii)

Explain the following term in brief:

Disk - based file system

Concept: undefined - undefined
Chapter:
[10]3.
[6]3. (A) | Answer any two of the following:
[1]3. (A) (a) (i)

Explain the following tag with a suitable example:

<B>

Concept: undefined - undefined
Chapter:
[1]3. (A) (a) (ii)

Explain the following tag with a suitable example:

<P>

Concept: undefined - undefined
Chapter:
[1]3. (A) (a) (iii)

Explain the following tag with a suitable example:

<Font>

Concept: undefined - undefined
Chapter:
[3]3. (A) (b)

Explain use of scope resolution operator with suitable example.

Concept: undefined - undefined
Chapter:
[3]3. (A) (c) (i)

Define Data Structure.

Concept: undefined - undefined
Chapter:
[1]3. (A) (c) (ii)

Explain any four operations of Data Structure. 

Concept: undefined - undefined
Chapter:
[4]3. (B) | Answer any one of the following:
[0.5]3. (B) (a) (i) (I)

Define the following:

Track 

Concept: undefined - undefined
Chapter:
[0.5]3. (B) (i) (II)
[1]3. (B) (a) (ii)
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[1]3. (B) (a) (iii)
[1]3. (B) (a) (iv)
[4]3. (B) (b)

Write any eight rules for operator overloading.

Concept: undefined - undefined
Chapter:
[10]4.
[6]4. (A) | Answer any two of the following:
[3]4. (A) (a)

List any six features of LINUX Operating System.

Concept: undefined - undefined
Chapter: [1] Operating System [1] Operating System
[3]4. (A) (b)

Write the features OOP (Object-oriented programming)

Concept: undefined - undefined
Chapter:
[3]4. (A) (c)

Draw a binary tree structure for the expression:

(2A + B) / (5F - D)3

Concept: undefined - undefined
Chapter:
[4]4. (B)
[1]4. (B) (a) (i)

Identify the following inheritance:

Concept: undefined - undefined
Chapter:
[1]4. (B) (a) (iii)

Identify the type of inheritance of the following diagram:

Concept: undefined - undefined
Chapter:
[1]4. (B) (a) (iv)

Identify the following inheritance:

Concept: undefined - undefined
Chapter:
[1]4. (B) (a) (ii)

Identify the following inheritance:

Concept: undefined - undefined
Chapter:
[1]4. (B) (b) (i)

What is Partitioning?

Concept: undefined - undefined
Chapter:
[3]4. (B) (b) (ii)

Give any three differences between Fixed Partitioning and Variable Partitioning.

Concept: undefined - undefined
Chapter:
[10]5. | Answer any two of the following:
[5]5. (a)

Write a program in C++ to reverse a positive integer number input from the keyboard.

Concept: undefined - undefined
Chapter:
[5]5. (b)

Write a program in C++ using object oriented programming technique to find area of circle.

Concept: undefined - undefined
Chapter:
[5]5. (c)

Write HTML Code for the following definition list:

 Atomic Number

Total number of electron in an atom is called Atomic Number

Mass Number

Total number of nucleons in an atom is called Mass Number 

Valence Electron

Total number of electron in an outermost orbit is called Valence electron

Concept: undefined - undefined
Chapter:

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Maharashtra State Board previous year question papers 12th Standard Board Exam Computer Science 1 with solutions 2025 - 2026

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