CBSE Class 12 Computer Science Answer Key 2023: The exam season is close to ending. The Central Board of Secondary Examination (CBSE) conducted the class 12 Computer Science (Code: 083) exam today, March 23, 2023, from 10:30 AM to 1:30 PM. Lakhs of students appeared for the computer science exam, which is a favourite of students from all streams. Computer Science is a skill and application-based subject that comes in handy in all walks of life due to the booming digital world.
A common habit of students is discussing the question paper of the exam afterwards. It’s not a recommended practice, but the Computer Science exam is such a big event in CBSE Class 12 that students can’t help but find out more about their exam performance and expected marks.
Checking the paper can also reveal errors in questions made from the board’s side. On that note, we bring you the 2023 CBSE Class 12 Computer Science answer key. The board doesn’t release the answer key or the marking scheme this soon, but you can check the authentic and expert-reviewed CBSE class 12 Computer Science answer key for SET 1, 2, 3 and 4 here.
Related:
- CBSE Class 12 Computer Science Paper Analysis 2023
- CBSE Class 12 Computer Science Question Paper 2023
CBSE Class 12 Computer Science Paper Answer Key 2023
CBSE hasn’t released the 2023 class 12 Computer Science question paper or answer key yet. However, you can refer to the genuine question paper and CBSE Class 12 Computer Science answer key 2023 prepared by in-house experts here.
CBSE Class 12 Computer Science Marking Scheme 2023
CBSE Class 12 Computer Science Marking scheme hasn’t been released yet, but keep posted here for regular updates. Until then you can refer to the expert-verified answer key for the CBSE 12th Computer Science exam in the following section.
| Board |
CBSE |
| Subject |
Computer Science (083) |
| Exam Date |
23 March 2023 |
| Marking Scheme Status |
Not Released |
| Official Website
|
cbse.gov.in
|
CBSE Class 12 Computer Science 2023 Answer Key
1. State True or False.
"Identifiers are names used to identify a variable, function in a program".
Answer: True
2. Which of the following is a valid keyword in Python?
(a) false
(b) return
(c) non local
(d) none
Answer: (b) return
3. Given the following Tuple Tup- (10, 20, 30, 50)
Which of the following statements will result in an error?
(a) print (Tup[0])
(b) Tup.insert (2,3)
(c) print (Tup[1:2])
(d) print (len (Tup))
Answer: (b) Tup.insert (2,3)
4. Consider the given expression: 5<10 and 12>7 or not 7>4
Which of the following will be the correct output, if the given expression is evaluated?
(a) True
(b) False
(c) NONE
(d) NULL
Answer: (a) True
5. Select the correct output of the code:
"Amrit Mahotsav @ 75"
A=S.partition (“ “)
print (a)
(a)(Amrit Mahotsav', '@', '75)
(b)['Amrit', 'Mahotsav', '@', '75]
(c) (‘Amrit’, ‘Mahotsav’ @ 75')
(d) (‘Amrit’,’’, 'Mahotsav @ 75')
Answer: (b)['Amrit', 'Mahotsav', '@', '75]
6. Which of the following mode keeps the file offset position at the end of the file?
(a) r+
(b) r
(c) w
(d) a
Answer: (a) r+
7. Fill in the blanks.
_______function is used to arrange the elements of a list in ascending order.
(a) sort()
(b) ascending ()
(c) arrange ()
(d) asort()
Answer: (a) sort()
8. Which of the following operations will return either True or False?
(a) +=
(b) !=
(c) =
(d) *=
Answer: (b) !=
9. Which of the following statement(s) would give an error after executing the following code?
Stud ("Murugan":100,"Mithu":95) #Statement 1
print (Stud[95]) # Statement 2
Stud ["Murugan"]=99 # Statement 3
print (Stud.pop()) # Statement 4
print (Stud) # Statement 5
(a) Statement 2
(c) Statement 4
(b) Statement 3
(d) Statements 2 and 4
Answer: (d) Statements 2 and 4
10. Fill in the blank.
_____is the number of tuples in a relation.
(a) Attribute
(b) Degree
(c) Domain
(d) Cardinality
Answer: (d) Cardinality
11. The syntax of seek() is :
file_object.seek (offset [, reference_point])
What is the default value of reference_point?
(a) 0
(b) 1
(c) 2
(d) 3
Answer: (a) 0
12. Fill in the blank:
_______clause is used with SELECT statement to display data in a sorted form with respect to a specified column.
(a) WHERE
(b) ORDER BY
(c) HAVING
(d) DISTINCT
Answer: (b) ORDER BY
13. Fill in the blank:
__________is used for point-to-point communication or unicast communication such as radar and satellite.
(a) INFRARED WAVES
(c) MICROWAVES
(b) BLUETOOTH
(d) RADIOWAVES
Answer: (c) MICROWAVES
14. What will the following expression be evaluated to in Python?
/print (4+3 5/3-5%2)
(a) 8.5
(b) 8.0
(c) 10.2
(d) 10.0
Answer: (c) 10.2
15. Which function returns the sum of all elements of a list?
(a) count()
(b) sum ()
(c) total()
(d) add()
Answer: (a) count()
16. fetchall0 method fetches all rows in a result set and returns a:
(a) Tuple of lists
(c) List of strings
(b) List of tuples
(d) Tuple of strings
Answer: (b) List of tuples
Q. 17 and 18 are ASSERTION (A) and REASONING (R) based questions. Mark the correct choice as
(a) Both (A) and (R) are true and (R) is the correct explanation for (A).
(b) Both (A) and (R) are true and (R) is not the correct explanation for (A).
(c) (A) is true but (R) is false.
(d) (A) is false but (R) is true.
17. Assertion (A): To use a function from a particular module, we need to import the module.
Reason (R): import statement can be written anywhere in the program, before using a function from that module.
Answer:
18. Assertion (A): A stack is a LIFO structure.
Reason (R): Any new element pushed into the stack always gets positioned at the index after the last existing element in the stack.
Answer:
CBSE Class 12 Result Date 2023
CBSE Class 12 board exam results will be declared in May or June 2023 (tentative).
Following are the links to view the results.
Below is some more CBSE 12th Computer Science study material for your reference -
| CBSE Class 12 Computer Science Previous Year Question Papers |
| CBSE Class 12 Computer Science Important Case Study Questions |
| CBSE Class 12 Computer Science Important Assertion Reason Based Questions |
Be sure to check out the important resources for CBSE Class 12 board exams 2023 given below.
