Marking Scheme Class: XII Session: 2021-22 Computer Science (Code 083)

Marking Scheme 

Class: XII Session: 2021-22

Computer Science (Code 083)

1 d. pass

2 b. tuple

3 d. (40,60)

4 b. if we try to read a text file that does not exist, the file gets created.

5 c. myfile = open('Myfile.txt'); myfile.readline()

6 d. myfile.readlines()

7 c. both iii and iv 

8 a. string

9 d. /

10 b. tup1[2] = 20

11 c. Every line ends with a new line character

12 b. tells the current position of the file pointer within the file

13 b. pickling is used for object serialization

14 a. 0

15 d. Both a and c

16 d. def cal_si(p, r=8, t=2)

17 a. my_func()

18 c. ,

19 d. EOL Translation is suppressed

20 b. Comma Separated Values

21 a. read()

22 c. .py

23 d. #

24 a. with open('record.bin','wb') as myfile:

pickle.dump(lst1,myfile)

25 b. The keys of a dictionary can be accessed using values 

26 c. 200

27 b. 4

28 d. 15.0

29 c. 2345678

30 c. 36

31 b. 3

32 b. dump(tup1, myfile)

33 c. continue

34 d. None

35 c. 18

36 d. 250 300

37 b. 50#5

38 b. Mumbai#Chennai#Kolkata#Mumbai#

39 b. 5#8#5#4#

40 c. 26

41 b. pYTHOnN#@

42 d. 27

43 b. 3

44 d. 3 5 5

45 b. 7

46 a. 2

47 b. School/Academics/syllabus.jpg

48 b. list

49 b. (1,2,[1,3.14],3)

50 c. csv

51 b. "Student.csv","w"

52 c. writer(fh)

53 d. roll_no,name,Class,section

54 c. rec

55 c. writerows()

this is PDF file i am just copy past PDF LINK IS :-

https://cbseacademic.nic.in/web_material/SQP/ClassXII_2021_22/ComputerScience-MS.pdf