CBSE Class 12 Informatics Practices 2025 Sample Paper Solved

Section-A

1 State whether the following statement is True or False:
Slicing can be used to extract a specific portion from a Pandas Series.

Answer : True

2 The purpose of WHERE clause in a SQL statement is to:
(A) Create a table
(B) Filter rows based on a specific condition
(C) Specify the columns to be displayed
(D) Sort the result based on a column

Answer : B

3 Identify the networking device responsible for routing data packets based on their destination addresses.
(A)Modem
(B) Hub
(C) Repeater
(D) Router

Answer : D

4 Identify the SQL command used to delete a relation (table) from a relationaldatabase.
(A) DROP TABLE
(B) REMOVE TABLE
(C) DELETE TABLE
(D) ERASE TABLE

Answer : A

5 e-waste refers to:
(A) Software that has become obsolete
(B) Data that has been deleted from a storage device
(C) Viruses that infect computers
(D) Electronic devices that are no longer in use

Answer : D

6 Which of the following Python statements can be used to select a column column_name from a DataFrame df ?
(A) df.getcolumn('column_name')
(B) df['column_name']
(C) df.select('column_name')
(D) df(column_name)

Answer : B

7 By default, the plot() function of Matplotlib draws a ______ plot.
(A) histogram
(B) column
(C) bar
(D) line

Answer : D

8 State whether the following statement is True or False:
In SQL, the HAVING clause is used to apply filter on groups formed by the GROUP BY clause.

Answer : True

9 Which of the following Python statements is used to import data from a CSV file into a Pandas DataFrame (Note: pd is an alias for pandas)?
(A) pd.open_csv('filename.csv')
(B) pd.read_csv('filename.csv')
(C)pd.load_csv('filename.csv')
(D)pd.import_csv('filename.csv')

Answer : B

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