Computer Science Answer Key 2021 Out for Class 12 Term-1 Exam

Computer Science Answer Key for Class 12  Term-1  

Computer Science Answer Key 2021 for Class 12 Term-1 Exam, Paper Code- 091, Series SSJ/2: CBSE Computer Science Class 12 Term-1 Exam is conducted on 21st December 2021 (today). Undoubtedly, each student after attempting the exam wants to know which questions were correctly attempted by him/her and in which question he/she missed the chance. Our teachers have prepared the complete CBSE Computer Science Class 12 Answer Key 2021-22 for the Term-1 Exam for Paper Code- 091, Series SSJ/2. No need to go anywhere else and there just stay with us and we will be soon covering all the questions with their correct answers here. 

CBSE Class 12 Computer Science Answer Key Term-1 

Students who appeared for the computer science paper have analysed the paper as Moderate. The students who had their Computer Science Exam on 21st December 2021 must cross-check their responses from the unofficial Class 12 Computer Science Answer Key Term-1 prepared by our faculty. 

Class 12 Computer Science Answer Key

Central Board of Secondary Education has divided the Class 12 Computer Science Board Exam into two Terms. In Term-1 the exam is divided into three sections with 55 questions out of which students have to attempt 45 questions for which the exam pattern that has been followed is as follows- 

1. Section A consists of 25 questions. Attempt a total of 20 questions from this section. 

2. Section B consists of 24 questions. Attempt a total of 20 questions from this section. 

3. Section C consists of 06 case study based questions. Attempt 05 questions from this section.

CBSE Class 12 Computer Science Answer Key & Question Paper

Here, we have provided the complete Class 12 Computer Science Answer Key for Term-1 here with correct answers one by one. So if are looking for the complete CBSE Class 12 Computer Science Answer Key do check the questions & their answers below for Paper Code- 091, Series SSJ/2

Q1. Find the invalid identifier from the following

a) name

b) class

c) section

d) break

Answer- (d) break

Q2. Which of the following is a function/method of the pickle module?

a) reader ()

b) writer ()

c) load ()

d) read ()

Answer- (c) load ()

Q3. For a given declaration in phyton as a “WELCOME” which of the following will be the correct output of print (S[1: 2:]?

a) WEL

b) COME

c) WLOE

d) ECM

Answer- (d) ECM

Q4. Which of the following statement is not correct?

a) We can write content into a text file opened using ‘w’ mode.

b) We can write content into a text file opened using ‘w+’ mode.

c) We can write content into a text file opened using ‘r’ mode.

d) We can write content into a text file opened using ‘r+’ mode.

Answer- (c) We can write content into a text file opened using ‘r’ mode.

Q5. Which of the following option is the correct Python statement to read and display the first 10 characters of a text file "Notes. txt"?

a) F = open ('Notes. txt'); print(F.load(10))

b) F = open ('Notes. txt'); print(F.dump(10))

c) F = open ('Notes. txt'); print(F.read(10))

d) F = open ('Notes. txt'); print(F.write(10))

Answer- (c) F = open ('Notes. txt'); print(F.read(10))

Q6. Which of the following is not a correct Python statement to open a text file “Notes. txt” to write content into it?

a) F = open ('Notes. txt' , ‘w’)

b) F = open ('Notes. txt' , ‘a’)

c) F = open ('Notes. txt' , ‘A’)

d) F = open ('Notes. txt' , ‘w+’)

Answer- (c) F = open ('Notes. txt' , ‘A’)

Q7. A text file opened using the following statement:
MyFile = open ('Notes. txt')
Which of the following is the correct Python statement to close it?

a) MyFile=close('Notes. txt)

b) MyFile.close('Notes. txt)

c) close.MyFile()

d) MyFile.close()

Answer- (d) MyFile.close()

Q8. Which of the following option is the correct usage for the tell () of a file object?

a) It places the file pointer at the desired offset in a file.

b) It returns the entire content of a file.

c) It returns the byte position of the file pointer as an integer.

d) It tells the details about the file. 

Answer- (c) It returns the byte position of the file pointer as an integer.

Q9. Which of the following is an incorrect Logical operator in Python?

a) not

b) in

c) or

d) and

Answer- (b) in

Q10. Given the Python declaration S1 = “Hello”. Which of the following statement will give an error?

a) print (S1[4])

b) S2=S1

c) S1=S1 [4]

d) S1[4]= “Y”

Answer- (d) S1[4]= “Y”

Q11. Which of the following statement is incorrect in the context of pickled binary files?

a) csv module is used for reading and writing objects in binary files 

b) pickle module is used for reading and writing objects in binary files.

c) load () of the pickle module is used to read objects.

d) dump () of the pickle module is used to write objects

Answer- 

Q12. What is the significance of the seek () method?

a) It seeks the absolute path of the file.

b) It tells the current byte position of the file pointer within the files

c) It places the file pointer at the desired offset within the files.

d) It seeks the entire content of the file.

Answer- (c) It places the file pointer at the desired offset within the files.

Q13. Which of the following is the correct expansion of csv?

a) Common Separated Values

b) Centrally Secured Values

c) Computerised Secured Values

d) Comma Secured Values

Answer- (a) Common Separated Values

Q14. If the following statement is used to read the contents of a textfile object F:X=F.readlines ()
Which of the following is the correct data type of x?

a) string

b) list

c) tuple

d) dictionary

Answer- (b) list

Q15. Which of the following is not correct in the context of Positional and Default parameters in Python functions?

a) Default parameters must occur to the right of Positional parameters

b) Positional parameters must occur to the right of Default parameters 

c) Positional parameters must occur to the left of Default parameters 

d) All parameters to the right of Default parameters must also have Default values. 

Answer- (b)

CBSE Class 12 Computer Science Question Paper PDF (Code- 091)

Computer Science Class 12 Answer Key for Term-1 Exam 

As our faculty prepare the Class 12 Computer Science Answer Key for questions asked in today's exam, we will be updating the Computer Science Class 12 Answer Key below. 

Keep refreshing the page to get the complete Computer Science Class 12 Answer Key for today's Computer Science Term-1 Exam. 

CBSE Class 12 Computer Science Term-2 Syllabus

The students after their Term-1 Computer Science must begin with their studies for the Class 12 Computer Science Term-2 syllabus for the academic year 2021-2022 along with distribution of marks for each unit. This CBSE Syllabus of Computer Science Term-2 as released by CBSE has been tabulated below- 

CBSE Class 12 Chemistry Syllabus (Term 1+Term 2)- Click Here

CBSE Class 12 Maths Syllabus (Term 1+Term 2)- Click Here

CBSE Class 12 Physics Syllabus (Term 1+Term 2)- Click Here

CBSE Class 12 English Syllabus (Term 1+Term 2)- Click Here