(Download) CBSE Class-12 Sample Paper 2020-21:Computer Science
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(Download) CBSE Class-12 Sample Paper 2020-21 :Computer Science
Class: XII Session: 2020-21
Computer Science (083) S
ample Question Paper (Theory)
Maximum Marks: 70 Time Allowed: 3 hours
General Instructions:
1. This question paper contains two parts A and B. Each part is compulsory.
2. Both Part A and Part B have choices.
3. Part-A has 2 sections:
a. Section – I is short answer questions, to be answered in one word or one line.
b. Section – II has two case studies questions. Each case study has 4 case-based sub- parts. An examinee is to attempt any 4 out of the 5 subparts.
4. Part - B is Descriptive Paper.
5. Part- B has three sections
a. Section-I is short answer questions of 2 marks each in which two question have internal options.
b. Section-II is long answer questions of 3 marks each in which two questions have internal options.
c. Section-III is very long answer questions of 5 marks each in which one question has internal option.
6. All programming questions are to be answered using Python Language only
|
Question
No. |
Part-A |
Marks
allocated |
|
|
Section-I
Select the most appropriate option out of the options given for each question. Attempt any 15 questions from question no 1 to 21. |
|
|
1 |
Find the invalid identifier from the following
a) MyName b) True c) 2ndName d) My_Name |
1 |
|
2 |
Given the lists L=[1,3,6,82,5,7,11,92] , write the output of print(L[2:5]) |
1 |
|
3 |
Write the full form of CSV. |
1 |
|
4 |
Identify the valid arithmetic operator in Python from the following.
a) ? b) < c) ** d) and |
1 |
|
|
|
|
|
5 |
Suppose a tuple T is declared as T = (10, 12, 43, 39), which of the following is
incorrect?
a) print(T[1])
b) T[2] = -29
c) print(max(T))
d) print(len(T)) |
1 |
|
6 |
Write a statement in Python to declare a dictionary whose keys are 1, 2, 3
and values are Monday, Tuesday and Wednesday respectively. |
1 |
|
7 |
A tuple is declared as
T = (2,5,6,9,8)
What will be the value of sum(T)? |
1 |
|
8 |
Name the built-in mathematical function / method that is used to return an absolute value of a number. |
1 |
|
9 |
Name the protocol that is used to send emails. |
1 |
|
10 |
Your friend Ranjana complaints that somebody has created a fake profile on
Facebook and defaming her character with abusive comments and pictures. Identify the type of cybercrime for these situations. |
1 |
|
11 |
In SQL, name the clause that is used to display the tuples in ascending order
of an attribute. |
1 |
|
12 |
In SQL, what is the use of IS NULL operator? |
1 |
|
13 |
Write any one aggregate function used in SQL. |
1 |
|
14 |
Which of the following is a DDL command?
a) SELECT b) ALTER c) INSERT d) UPDATE |
1 |
|
15 |
Name The transmission media best suitable for connecting to hilly areas. |
1 |
|
16 |
Identify the valid declaration of L:
L = [‘Mon’, ‘23’, ‘hello’, ’60.5’] |
1 |
