Sample Question Paper with Marking Scheme
Term - 1
Subject: Informatics Practices (Code - 065)
Class - XII
Time Allowed: 90 minutes Maximum Marks: 35
General Instructions:
- The paper is divided into 3 Sections - A, B and C.
- Section A, consists of Question 1 to 25 and student need to attempt 20 questions.
- Section B, consists of Question number 26 to 49 and student need to attempt 20 questions.
- Section C, consists of Question number 50 to 55 and student need to attempt 5 questions.
- All question carry equal marks.
Section - A
Section A consists of 25 question, attempt any 20 questions.
1. The name "Pandas" is derived from the term:
(a) Panel Data
(b) Panel Series
(c) Python Document
(d) Panel Data Frame
Answer : (a) Panel Data
2. The command to install the pandas is:
(a) install pip pandas
(b) install pandas
(c) pip pandas
(d) pip install pandas
Answer: d) pip install pandas
3. Python pandas was developed by:
(a) Guido van Rossum
(b) Travis Oliphant
(c) Wes McKinney
(d) Brendan Eich
Answer: (c) Wes McKinney
4. Pandas Series is:
(a) 2 Dimensional
(b) 3 Dimensional
(c) 1 Dimensional
(d) Multidimensional
Answer: (c) 1 Dimensional
5. Pandas is a:
(a) Package
(b) Language
(c) Library
(d) Software
Answer: (c) Library
6. We can analyse the data in pandas with
(a) Series
(b) Data Frame
(c) Both of the above
(d) None of the above
Answer: (c) Both of the above
7. Out of the following which function cannot be used for customization of charts in Python?
(a) xlabel()
(b) colour()
(c) title()
(d) xticks()
Answer: (b) colour()
8. What is the minimum number of argument required for plot() function in matplotlib?
(a) 1
(b) 2
(c) 3
(d) 4
Answer: (a) 1
9. Method or function to add a new row in data frame is:
(a) .loc()
(b) .iloc()
(c) join
(d) add()
Answer: (a) .loc()
10. _________ is the function to save a graph.
(a) savefig()
(b) savefigure()
(c) savegraph()
(d) savechart()
Answer: (a) savefig()
11. A_______ is a unique data trace of a user's activities, action, communication or transactions in digital media.
(a) Digital Handprint
(b) Digital Footprint
(c) Offline Footprint
(d) Offline Handprint
Answer: (b) Digital Footprint
12. Which of the following is not a type of cybercrime?
(a) Data theft
(b) Forgery of online documents
(c) Damage of data and systems
(d) Installing antivirus for protection
Answer: (d) Installing antivirus for protection
13. 'F' in FOSS stands for:
(a) Free
(b) Forever
(c) Fire
(d) Freezing
Answer: (a) Free
14. Which of the following import statement is not correct?
(a) import pandas as class12
(b) import pandas as 1pd
(c) import pandas as pd1
(d) import pandas as pd
Answer: (b) import pandas as 1pd
15. IPR stands for:
(a) Intelligent Property Rights
(b) Intellectual Property Reserve
(c) Intellectual Property Rights
(d) Intellectual Product Rights
Answer: (c) Intellectual Property Rights
16. Which of the following is not a violation of IPR?
(a) Plagiarism
(b) Copyright Infringement
(c) Patent
(d) Trademark Infringement
Answer: (c) Patent
17. While accessing the column from the data frame, we can specify the column name. In case column does not exist, which type of error it will raise:
(a) Key Error
(b) Syntax Error
(c) Name Error
(d) Runtime Error
Answer: (a) Key Error
18. _________ is the practice of taking someone else's work or ideas and passing them off as ones' own:
(a) Plagiarism
(b) Copyright
(c) Patent
(d) All of the above
Answer: (a) Plagiarism
19. Function to display the first n rows in the DataFrame:
(a) tail(n)
(b) head(n)
(c) top(n)
(d) first(n)
Answer: (b) head(n)
20. Following are the impact of e-waste on the environment. Choose the odd one out.
(a) Soil Pollution
(b) Water Pollution
(c) Air Pollution
(d) Sound Pollution
Answer: (d) Sound Pollution
21. Abdul deleted all his chats from all his social media accounts, and he think that all his traces are deleted completely. Is he right in thinking so?
(a) Yes
(b) No
(c) May be
(d) Not sure
Answer: (b) No
22. The legal and regulatory aspects of the internet refer to ________.
(a) Cyber Space
(b) Cyber Crime
(c) Criminal law
(d) IT act
Answer: (d) IT act
23. Pandas data frame cannot be created using:
(a) Dictionary of tubles
(b) Series
(c) Dictionary of List
(d) List of Dictionaries
Answer: (a) Dictionary of tubles
24. Which function will be used to read data from a CSV file into pandas data frame?
(a) readcsv()
(b) to_csv()
(c) read_csv()
(d) csv_read()
Answer:(c) read_csv()
25. Which of the following is not an attribute of pandas data frame?
(a) length
(b) T
(c) Size
(d) shape
Answer: (a) length
Section - B
Section B consists of 24 Questions (26 to 49). Attempt any 20 questions.
26. What will be the output of the given code?
import pandas as pd
s = pd.Series([1,2,3,4,5],
index=['akram','brijesh','charu','deepika','era'])
print(s['charu'])
(a) 1
(b) 2
(c) 3
(d) 4
Answer: (c) 3
27. Assuming the given series, named stud, which command will be used to print 5 as output?
Amit 90
Ramesh 100
Mahesh 50
John 67
Abdul 89
Name: Student, dtype: int64
(a) stud.index
(b) stud.length
(c) stud.values
(d) stud.size
Answer: (d) stud.size
28. A social science teacher wants to use a pandas series to teach about Indian historical monuments and its states. The series should have the monument names as values and state names as indexes which are stored in the given lists, as shown in the code. Choose the statement which will create the series:
import pandas as pd
Monument=['Qutub Minar','Gateway of India','Red Fort','Taj Mahal']
State=['Delhi','Maharashtra','Delhi','Uttar Pradesh']
(a) S = df.Series(Monument, inde=State)
(b) S = pd.Series(State, Monument)
(c) S = pd.Series(Monument, index=State)
(d) S = pd.series(Monument, index=State)
Answer: (c) S = pd.Series(Monument, index=State)
29. ____________ is a cybercrime in which a target or targets are contacted by email, telephone or text message by someone posing as a legitimate institution to lure individuals into providing sensitive data such as personally identifiable information, banking and credit card details, and passwords.
(a) Plagiarism
(b) Phishing
(c) Cyberstalking
(d) Hacking
Answer: (b) Phishing
30. Observe the following figure. Identify the coding for obtaining this as output:
(a) import matplotlib.pyplot as plt
plt.plot( [ 1, 2], [4, 5])
plt.show()
(b) import matplotlib.pyplot as plt
plt.plot( [ 1, 2, 3], [4, 5, 1])
plt.show()
(b) import matplotlib.pyplot as plt
plt.plot( [2, 3], [5, 1])
plt.show()
(d) import matplotlib.pyplot as plt
plt.plot( [ 1, 3], [4, 1])
plt.show()
Answer: (b)
31. Read the statements given below and identify the right option to draw a histogram.
Statement A: To make a Histogram with Matplotlib, we can use plt.hist() function.
Statement B: The bin parameter is compulsory to create histogram.
(a) Statement A is correct
(b) Statement B is correct
(c) Statement A is correct, but Statement B is incorrect
(d) Statement A is incorrect, but Statement B is correct
Answer: (c) Statement A is correct, but Statement B is incorrect
32. Which graph should be used where each column represents a range of values, and the height of a column corresponds to how many values are in that range?
(a) plot
(b) line
(c) bar
(d) histogram
Answer: (d) histogram
33. Suhhani is confused about the free operating system available in the market. Few of her friends suggested a few operating systems. Help her in choosing free operating system for her device:
(a) Ubuntu
(b) Windows
(c) Mozilla Firefox
(d) Blender
Answer: (a) Ubuntu
34. Consider the following statements with reference to the use of email:
Statement 1: Sending threatening messages to a classmate.
Statement 2: Inviting friends to participate in a school club or sports activity.
Statement 3: Asking your teacher for help on homework.
Statement 4: Responding to or forwarding spam emails.
Which of the above statements refer to appropriate use of email?
(a) Statements 1 and 2.
(b) Statements 2 and 3.
(c) Statements 3 and 4.
(d) Statements 2 and 4.
Answer: (b) Statements 2 and 3.
35. Consider the following series named animal:
L Lion
B Bear
E Elephant
T Tiger
W Wolf
dtype: Object
Write the output of the command:
print(animal[: : -3] )
(a) L Lion
T Tiger
dtype: object
(b) B Bear
E Elephant
dtype: object
(c) W Wolf
B Bear
dtype: object
(d) W Wolf
T Tiger
dtype: object
Answer: (c)
36. Saharsh is a student of class -9 and he is a very frequent user of internet applications. One day he got an unpleasant message on his instant messenger. What do you think he should do?
(a) ignore it and start chatting to someone else.
(b) reply back to them and find out what their problem is.
(c) shut down the computer and hope they'll leave him alone in future.
(d) go to his parents, teacher, or other trusted adult and let them know that he feels uncomfortable.
Answer: (d)
37. What is a correct syntax to return the values of first row of a Pandas DataFrame?
Assuming the name of the DataFrame is dfRent.
(a) dfRent[0]
(b) dfRent.loc[1]
(c) dfRent.loc[0]
(d) dfRent.iloc[1]
Answer: (c) dfRent.loc[0]
38. Feasible method(s) to manage e-wase:
(a) Reduce
(b) Reuse
(c) Recycle
(d) All of the above
Answer: (d) All of the above
39. Difference between loc() and iloc().:
(a) Both are Label indexed based functions.
(b) Both are Integer position-based functions.
(c) loc() is label based function and iloc() integer position based function.
(d) loc() is integer position based function and iloc() index position based function.
Answer: (c) loc() is label based function and iloc() integer position based function.
40. Write the output of the given program:
import pandas as pd
S1=pd.Series([5,6,7,8,10],index=['v','w','x','y','z'])
l=[2,6,1,4,6]
S2=pd.Series(l,index=['z','y','a','w','v'])
print(S1-S2)
(a) a 0
v -1.0
w 2.0
x NaN
y 2.0
z 8.0
dtype: float64
(b) a NaN
v -1.0
w 2.0
x NaN
y 2.0
z 8.0
dtype: float64
(c)
v -1.0
w 2.0
y 2.0
z 8.0
dtype: float64
(d) a NaN
v -1.0
w 2.0
x 3.0
y 2.0
z 8.0
dtype: float64
Answer: (b)
41. We should exhibit proper manners and etiquettes while being online. Choose the right net etiquette (s) from the following:
(a) Avoid Cyber Bullying
(b)Respect Other’s Privacy
(c) No Copyright violation
(d) All of the above
Answer: (d) All of the above
42. Which command will be used to delete 3 and 5 rows of the data frame. Assuming the data frame name as DF.
(a) DF.drop([2,4],axis=0)
(b) DF.drop([2,4],axis=1)
(c) DF.drop([3,5],axis=1)
(d) DF.drop([3,5])
Answer: (a) DF.drop([2,4],axis=0)
43. Write the output of the given command:
import pandas as pd
s=pd.Series([1,2,3,4,5,6],index=['A','B','C','D','E','F'])
print(s[s%2==0])
(a) B 0
D 0
F 0
dtype: int64
(b) A 1
B 2
C 5
dtype: int64
(c) B 2
D 4
F 6
dtype: int64
(d) B 1
D 2
F 3
dtype: int64
Answer: (c)
44. Ritika is a new learner for the python pandas, and she is aware of some concepts of python. She has created some lists, but is unable to create the data frame from the same. Help her by identifying the statement which will create the data frame.
import pandas as pd
Name=['Manpreet','Kavil','Manu','Ria']
Phy=[70,60,76,89]
Chem=[30,70,50,65]
(a) df=pd.DataFrame({"Name":Name,"Phy":Phy,"Chem":Chem})
(b) d=("Name":Name,"Phy":Phy,"Chem":Chem) df=pd.DataFrame(d)
(c) df=pd.DataFrame([Name,Phy,Chem],columns=['Name',"Phy","Chem","Total"])
(d) df=pd.DataFrame({Name:"Name", Phy :"Phy",Chem: "Chem"})
Answer: (a) df=pd.DataFrame({"Name":Name,"Phy":Phy,"Chem":Chem})
45. Linux, MySQL and Mozilla Firefox software come under _________ category.
(a) Proprietary
(b) FOSS
(c) Freeware
(d) Shareware
Answer: (b) FOSS
46. Assuming the given structure, which command will give us the given output:
(a) print(df.shape())
(b) print(df.shape)
(c) print(df.size)
(d) print(df.size())
Answer: (b) print(df.shape)
47. Write the output of the given command:
df.loc[:0, 'Sal']
Consider the given dataframe
(a) 0 Kavita 50000 3000
(b) 50000
(c) 3000
(d) 50000
Answer: (b) 50000
48. Consider the following data frame df
print(df.marks/2)
(a) 0 45.0
1 NaN
2 43.5
Name: Marks, dtype: float64
(b) 0 45.0
1 NaN
2 43
Name: Marks, dtype: float64
(c) 0 45
1 NaN
2 43.5
Name: Marks, dtype: float64
(d) 0 45.0
1 0
2 43.5
Name: Marks, dtype: float64
Answer: (a)
49. Read the statements given below. Identify the right option from the following for Attribute and method/function.
Statement A: Attribute always ends without parenthesis.
Statement B: Function/Method cannot work without arguments.
(a) Both statements are correct.
(b) Both statements are incorrect.
(c) Statement A is correct, but Statement B is incorrect
(d) Statement A is incorrect, but Statement B is correct
Answer: (c) Statement A is correct, but Statement B is incorrect
Section - C
Section C, consists of 6 question (50 to 55). Attempt any 5 questions.
Case Study
Mr. Sharma is working with an IT company, and he has provided some data. On which he wants to do some operations, but he is facing some problem, help him:
Code:
import pandas as pd
ResultSheet={
'Naveen': pd.Series([90, 91, 97],
index=['Maths','Science','Hindi']),
'Rehana': pd.Series([92, 81, 96],
index=['Maths','Science','Hindi']),
'John': pd.Series([89, 91, 88],
index=['Maths','Science','Hindi']),
'Roja': pd.Series([81, 71, 67],
index=['Maths','Science','Hindi']),
'Mannat': pd.Series([94, 95, 99],
index=['Maths','Science','Hindi'])}
DF = pd.DataFrame(ResultSheet)
print(DF)
Output of the above code:
Based on the given information, answer the question No. 50 - 55.
50. He wants to add a new column with name of student ‘Prem’ in above data frame choose the right command to do so:
(a) DF['Prem']=[89,78,76]
(b) df['Prem']=[89,78,76]
(c) DF['Prem']=[89,78,76,67]
(d) DF['Name']=[89,78,76]
Answer: (a) DF['Prem']=[89,78,76]
51. He wants to set all the values to zero in data frame, choose the right command to do so:
(a) DF=0
(b) DF[]=0
(c) DF[:]=0
(d) DF[:]==0
Answer: (c) DF[:]=0
52. He wants to delete the row of science marks:
(a) DF.drop('Science', axis=1)
(b) DF.drop('Science', axis=0)
(c) DF.drop('Science', axis=-1)
(d) DF.drop('Science', axis==0)
Answer: (b) DF.drop('Science', axis=0)
53. The following code is to create another data frame, which he wants to add to the existing data frame. Choose the right command to do so:
Sheet1={
'Aaradhya': pd.Series([90, 91, 97],
index=['Maths','Science','Hindi'])}
S1=pd.DataFrame(Sheet1)
(a) DF.append(S1,axis=0)
(b) DF.append(S1)
(c) DF.insert(S1)
(d) DF.join(S1)
Answer: (b) DF.append(S1)
54. What will be the output of the given command?
DF.index = ['A', 'B', 'C']
(a)
(b)
(c)
(d) Error, Index already exists and cannot be overwritten.
Answer: (b)
55. What will be the output of the given command?
(a) 15
(b) 18
(c) 21
(d) 23
Answer: (a) 15
===================FINISH====================
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