CBSE Class 12 Computer Science Question Paper 2021 Code 491 (Set-4) C++ (Compartment) is available for download here. CBSE conducted the Class 12 Computer Science exam on September 8, 2021 from 10:30 AM to 1:30 PM. The Computer Science theory paper is of 70 marks.
Also Check: CBSE Class 12 Question Paper 2021 (All Subjects)
The Computer Science question paper includes the following types of questions:
- The question paper has 7 questions for 70 marks in 3 hours, with 15 minutes of extra reading time (10:15 AM to 10:30 AM)
- Section A is for candidates who opted for C++ and Section B is for those who opted for Python: the candidate answers either Section A or Section B, and must mention the choice on page 1 of the answer-book
- Q1 to Q4 carry 12, 12, 14 and 6 marks in each of Section A and Section B (44 marks), and all questions are compulsory within the section chosen
- Section C is compulsory for all: Q5 (databases and SQL) carries 8 marks, Q6 (Boolean algebra) 8 marks and Q7 (networks) 10 marks
- The paper is headed Computer Science (OLD) and its instructions state that questions 2(b), 2(d), 3 and 4 have internal choices
CBSE Class 12 Computer Science Question Paper 2021 Code 491 (Set-4) C++ (Compartment) PDF
| CBSE Official PDF | CD PDF | CD PDF with Solutions |
|---|---|---|
| Download official PDF 0.79 MB | Download Collegedunia PDF 0.37 MB | – |
CBSE Class 12 Computer Science 2021 Question Paper Details
| Exam | CBSE Class 12 Board Examination 2021 |
| Subject | Computer Science |
| Paper code | 491 (Set-4) C++ (Compartment) |
| Exam date | September 8, 2021 |
| Time allowed | 3 hours (plus 15 minutes of reading time, 10:15 AM to 10:30 AM) |
| Maximum marks | 70 |
| Total questions | 7 (attempt 7) |
CBSE Class 12 Computer Science Question Paper Pattern and Marking Scheme
The CBSE Class 12 Computer Science 2021 question paper is of 70 marks and has 7 questions, of which 7 are to be attempted. The tables below give the section-wise paper pattern and the split of marks, as printed in the official question paper.
CBSE Class 12 Computer Science Question Paper Pattern 2021
| Section | Questions | Question Type | Choice | Marks per Question | Marks |
|---|---|---|---|---|---|
| Section A (C++) or Section B (Python): answer either one | Q1 | Programming basics in C++ (Section A) or Python (Section B): short-answer parts of 1 to 3 marks | All 1 | 12 | 12 |
| Q2 | Object-oriented programming in C++ (Section A) or Python (Section B): parts of 1 to 4 marks, with internal choice in parts (b) and (d) | All 1 | 12 | 12 | |
| Q3 | Data structures in C++ (Section A) or Python (Section B): parts of 2 to 4 marks, with internal choice | All 1 | 14 | 14 | |
| Q4 | File handling in C++ (Section A) or Python (Section B): parts of 1 to 3 marks, with internal choice | All 1 | 6 | 6 | |
| Section C (compulsory for all candidates) | Q5 | Database concepts and SQL queries | All 1 | 8 | 8 |
| Q6 | Boolean algebra and logic gates | All 1 | 8 | 8 | |
| Q7 | Computer networks and communication | All 1 | 10 | 10 | |
| Total | 7 questions | Attempt 7 | 70 |
CBSE Class 12 Computer Science Marks Distribution 2021
| Question Type | Questions to Attempt | Marks per Question | Total Marks |
|---|---|---|---|
| Programming basics in C++ (Section A) or Python (Section B): short-answer parts of 1 to 3 marks (Section A / B) | 1 | 12 | 12 |
| Object-oriented programming in C++ (Section A) or Python (Section B): parts of 1 to 4 marks, with internal choice in parts (b) and (d) (Section A / B) | 1 | 12 | 12 |
| Data structures in C++ (Section A) or Python (Section B): parts of 2 to 4 marks, with internal choice (Section A / B) | 1 | 14 | 14 |
| File handling in C++ (Section A) or Python (Section B): parts of 1 to 3 marks, with internal choice (Section A / B) | 1 | 6 | 6 |
| Database concepts and SQL queries (Section C) | 1 | 8 | 8 |
| Boolean algebra and logic gates (Section C) | 1 | 8 | 8 |
| Computer networks and communication (Section C) | 1 | 10 | 10 |
| Total | 7 | 70 |
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