CBSE Class 12 Informatics Practices 2025 Sample Paper Set 02 Solved

SECTION A

1 A ___________ is a one-dimensional Data Structure.
a) DataFrame
b) Series
c) Both a and b
d) None of above

Answer : b

2 Which of the following is a correct SQL Command -
a) UPDATE book SET price AS 50;
b) UPDATE TABLE book SET price = 10;
c) UPDATE book SET price = 10;
d) All are incorrect

Answer : c

3 Which device is used to regenerate the signals over long distance data transmission:
a) Switch
b) Modem
c) Repeater
d) None of the above

Answer : c

4 Which keyword is used to arrange the result of order by clause in descending order?
a) DSEC
b) ASCE
c) DESC
d) ASC

Answer : c

5 Which of the following does not comes under violation of IPR?
a) Plagiarism
b) Phishing
c) Copyright Infringement
d) Illegal Download

Answer : b

6 Which of the following Python statements can be used to select a column Mark from a DataFrameResult ?
a) df[„Result.Mark‟]
b) Result[Mark']
c) Mark[„Result‟]
d) Result(„Mark‟)

Answer : b

7 The method used for X axis label a line graph is
a) plt.title()
b) plt.ylabel()
c) plt.line()
d) plt.xlabel()

Answer : d

8 State whether the following statement is True or False:
The qualifier DISTINCT must be used in an SQL statement when we want to eliminate duplicate rows.

Answer : True

9 If a DataFrame is created using List of Lists,then
a) Each inner list is row of the DataFrame
b) Each inner list is column of the DataFrame
c) Either (a) or (b) is Possible.
d) None of These

Answer : a

10 Harish has invented a new theory that will revolutionize the healthcare of our country,
He wants to protect it legally against unauthorized use. He should take its
a) Copyright
b) Patent
c) Trademark
d) License

Answer : a

11 Which one of the following functions is used to count the no of rows from the given table in MySQL?
a) CARDINALITY( )
b) COUNT(Column name )
c) COUNT(* )
d) All the above

Answer : c

Please refer to attached file for CBSE Class 12 Informatics Practices 2025 Sample Paper Solved Set 2