CBSE Class 12 Informatics Practices 2025 Sample Paper Solved Set 1

Section-A

1 By default the Series indices start with:
(a) 1
(b) 0
(c) ‘A’
(d) ‘a’

Answer : b

2 Physical or logical arrangement of network refers to as
(a) routing
(b) looping
(c) topology
(d) networking

Answer : c

3 In column ‘Margin’ contains the data set (2.00, 2.00, NULL, 4.00, NULL, 3.00, 3.00).
What will be the output after the execution of the given query?
SELECT AVG(Margin) from SHOP;
(a) 2.80
(b) 2
(c) 2.0
(d) error

Answer : a

4 Which of the following topologies is also known Linear Topology?
(a) Star Topology
(b) Ring Topology
(c) Bus Topology
(d) None of these

Answer : c

5 Help Gargi in predicting the output of the following SQL command.
select ABS(INSTR('Informatics Practices','for')-LENGTH('Informatics'));
(a) -8
(b) 8
(c) 7
(d) -7

Answer : b

6 Write the output of the following SQL command.
SELECT ROUND(25.532,-1);
(a) 25
(b) 30
(c) 20
(d) 25.5

Answer : b

7 Which of the following is not a cyber crime?
(a) phishing
(b) cyberstalking
(c) identity theft
(d) online chatting

Answer : d

8 Which of the following functions returns the number of rows in a DataFrame?
(a) find()
(b) count()
(c) len()
(d) None of these

Answer : c

9 Which of the following functions is used to delete a row from DataFrame?
(a) del
(b) erase
(c) delete
(d) drop

Answer : d

10 What does e-waste stand for
(a) Environmental waste
(b) Electronic waste
(c) Electrical waste
(d) Equipment waste

Answer : b

Please refer to attached file for CBSE Class 12 Informatics Practices 2025 Sample Paper Solved Set 1