CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved

Computer Science
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Review targeted exam resources with the CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved. Built according to official CBSE standards for the 2026-27 academic year, these downloadable Class 12 Computer Science sample papers support effective revision and performance tracking.

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Access the complete sample paper PDF for Class 12 Computer Science below. Regular practice with these targeted mock exams builds familiarity with expected question patterns and chapter weightage to help secure higher marks.

CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved. CBSE has recently released the class 12 sample papers for subject  Computer Science Old. These suggested sample papers are released every year by CBSE ahead of the class 12 board exams so that the students can understand the pattern of question paper and type of questions which is expected to come in the Class 12 board exams. Students can refer to the attached question paper along with marking scheme to understand what they can expect in the board exams in 2020. Its always better to solve the question paper first and then refer to provided answers.

 
1 (a) Write the type of C++ Operators (Arithmetic, Logical, and Relational
Operators) from thefollowing:
(i) !(ii) !=(iii) &&(iv) %
(b) Observe the following program very carefully and write the name of those header file(s), which are essentially needed to compile and execute thefollowing program successfully:
void main()
{
char text[20], newText[20];
gets(text);
strcpy(newText,text);
for(int i=0;i<strlen(text);i++)
if(text[i] = =’A’)
text[i] = text[i]+2;
puts(text);
}
(1)
(c) Rewrite the following C++ code after removing any/all Syntactical Error(s) with each correction underlined.
 
Note: Assume all required header files are already being included in the program.

#define float PI 3.14
void main( )
{
float R=4.5,H=1.5;
A=2*PI*R*H + 2*PIpow(R,2);
cout<<‘Area=’<<A<<endl;
}
(d) Find and write the output of the following C++ program code:
 
Note: Assume all required header files are already being included in the program.
void main( )
{
int Ar[ ] = { 6 , 3 , 8 , 10 , 4 , 6 , 7} ;
int *Ptr = Ar , I ;
cout<<++*Ptr++ << '@' ;
I = Ar[3] - Ar[2] ;
cout<<++*(Ptr+I)<<'@'<<"\n" ;
cout<<++I + *Ptr++ << '@' ;
cout<<*Ptr++ <<'@'<< '\n' ;
for( ; I >=0 ; I -=2)
cout<<Ar[I] << '@' ;
}

Please refer to link below to download CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved

Free study material for Computer Science

Model Practice Papers & Solutions for Class 12 Computer Science

Download Sample Paper: CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved (Class 12 Computer Science)

Review model practice papers for Class 12 Computer Science. Working through the CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved under simulated test conditions at home ensures complete familiarity with upcoming school evaluations.

Maximize Your Scores with Model Papers

  • Exam Blueprint: Understand mark allocations and structural guidelines relevant to Class 12 evaluations.
  • Targeted Improvement: Identify weak areas in Class 12 Computer Science requiring focused revision.
  • Pacing & Precision: Practice mixed question formats to build execution speed and ensure timely paper completion.

How to Analyze Your Performance in CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved

  1. Verify Answers: Compare your responses against professional teacher solutions provided in the sample paper keys.
  2. Error Analysis: Class 12 learners must review incorrect answers carefully to understand underlying mistakes.
  3. Concept Reinforcement: Consult the official NCERT book for Class 12 Computer Science when stuck before re-attempting problems.

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Where can I download the PDF for CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved?

You can download the complete PDF for CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved for free from StudiesToday.com. Our resources for Class 12 Computer Science are updated for the latest academic session and follow the official exam pattern.

Are solutions provided for CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved?

Yes, CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Computer Science to help students of Class 12 understand correct methodology and marking scheme.

How can practicing CBSE Class 12 Computer Science Old Boards 2020 Sample Paper Solved help in exam preparation?

Practicing this Computer Science paper helps in time management and identifying important topics. For Class 12, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.

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