File Handling In Python Programming Mcq | File Handling In Python Class 12 Mcq

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1. What is the primary purpose of storing data in files?

A) To execute programs faster
B) To permanently store data for later access
C) (To reduce memory usage
D) To improve program readability

ANSWER= B) To permanently store data for later access

2. Where are files stored in a computer system?

A) Primary memory (RAM)
B) Secondary storage media
C) CPU registers
D) Cache memory

ANSWER= B) Secondary storage media

3. Which of the following is a text file extension?

A) .txt
B) .jpg
C) .exe
D) .mp3

ANSWER= A) .txt

4. What is the main difference between text and binary files?

A) Text files are smaller in size
B) Binary files contain human-readable characters
C) Text files consist of ASCII/Unicode characters
D) Binary files cannot be opened in Python

ANSWER= C) Text files consist of ASCII/Unicode characters

5. What happens if a binary file is opened in a text editor?

A) It displays the correct content
B) It shows garbage values
C) It automatically converts to text
D) It asks for a password

ANSWER= B) It shows garbage values

6. Which of the following is an example of a binary file?

A) A .csv file
B) A .py file
C) A .docx file
D) A .txt file

ANSWER= C) A .docx file

7. What is the default EOL character in Python?

A) \r
B) \n
C) \t
D) \0

ANSWER= B) \n

8. Which encoding scheme is commonly used for text files?

A) ASCII
B) JPEG
C) MPEG
D) ZIP

ANSWER= A) ASCII

9. Which function is used to open a file in Python?

A) file_open()
B) open()
C) load()
D) read()

ANSWER= B) open()

10. What is the default mode for opening a file?

A) Read mode (‘r’)
B) Write mode (‘w’)
C) Append mode (‘a’)
D) Binary mode (‘b’)

ANSWER= A) Read mode (‘r’)

11. Which mode is used to open a file for both reading and writing?

A) ‘r’
B) ‘w+’
C) ‘a’
D) ‘b’

ANSWER= B) ‘w+’

12. What happens if a file opened in ‘w’ mode already exists?

A) The file is opened in read mode
B) The existing content is overwritten
C) The file is deleted
D) An error occurs

ANSWER= B) The existing content is overwritten

13. Which attribute returns the access mode of a file?

A) file.name
B) file.mode
C) file.closed
D) file.size

ANSWER= B) file.mode

14. How is a file closed in Python?

A) file.close()
B) close(file)
C) file.exit()
D) exit(file)

ANSWER= A) file.close()

15. What is the advantage of using the with clause to open a file?

A) It allows faster file operations
B) It automatically closes the file
C) It encrypts the file
D) It compresses the file

ANSWER= B) It automatically closes the file

16. Which method is used to write a single string to a file?

A) writeline()
B) write()
C) append()
D) insert()

ANSWER= B) write()

17. What does the write() method return?

A) The number of characters written
B) The file object
C) The content of the file
D) None

ANSWER= A) The number of characters written

18. How can numeric data be written to a text file?

A) Directly using write()
B) By converting it to a string first
C) Using the dump() method
D) It cannot be written

ANSWER= B) By converting it to a string first

19. Which method is used to write multiple strings to a file?

A) writelines()
B) write()
C) appendlines()
D) insertlines()

ANSWER= A) writelines()

20. What is the purpose of the flush() method?

A) To close the file
B) To clear the buffer and write contents to the file
C) To read the file
D) To delete the file

ANSWER= B) To clear the buffer and write contents to the file

21. Which method reads a specified number of bytes from a file?

A) read()
B) readline()
C) readlines()
D) seek()

ANSWER= A) read()

22. What happens if no argument is passed to the read() method?

A) It reads one line
B) It reads the entire file
C) It returns an error
D) It reads 10 bytes

ANSWER= B) It reads the entire file

23. Which method reads one complete line from a file?

A) read()
B) readline()
C) readlines()
D) load()

ANSWER= B) readline()

24. What does the readlines() method return?

A) A single string
B) A list of strings
C) A tuple of strings
D) A dictionary of strings

ANSWER= B) A list of strings

25. How can you read a file line by line using a loop?

A) Using readline() in a while loop
B) Using read() in a for loop
C) Using seek() in a loop
D) Using dump() in a loop

ANSWER= A) Using readline() in a while loop

26. What does the split() function do when reading a file?

A) Splits the file into multiple files
B) Splits each line into a list of words
C) Joins multiple lines
D) Closes the file

ANSWER= B) Splits each line into a list of words

27. Which method returns the current position of the file object?

A) seek()
B) tell()
C) pos()
D) offset()

ANSWER= B) tell()

28. What is the purpose of the seek() method?

A) To close the file
B) To move the file object to a specific position
C) To read the file
D) To write to the file

ANSWER= B) To move the file object to a specific position

29. What is the default reference point for the seek() method?

A) Beginning of the file (0)
B) Current position (1)
C) End of the file (2)
D) Middle of the file

ANSWER= A) Beginning of the file (0)

30. How do you move the file object to the 10th byte from the beginning?

A) seek(10, 0)
B) seek(0, 10)
C) seek(10, 1)
D) seek(10, 2)

ANSWER= A) seek(10, 0)

31. What happens if a file opened in ‘a’ mode does not exist?

A) An error occurs
B) A new file is created
C) The file is deleted
D) The file is opened in read mode

ANSWER= B) A new file is created

32. Which mode is used to open a file for both reading and writing without overwriting existing content?

A) ‘r+’
B) ‘w+’
C) ‘a+’
D) ‘b+’

ANSWER= C) ‘a+’

33. How can you iterate over all lines in a file?

A) Using a for loop on the file object
B) Using a while loop with readline()
C) Both a and b
D) Using seek()

ANSWER= C) Both a and b

34. What is the output of fileobject.tell() after writing data to a file?

A) The number of lines written
B) The current byte position of the file object
C) The file size
D) The number of characters written

ANSWER= B) The current byte position of the file object

35. What is the purpose of the pickle module?

A) To read text files
B) To serialize and deserialize Python objects
C) To write binary files
D) To compress files

ANSWER= B) To serialize and deserialize Python objects

36. Which method is used to write Python objects to a binary file?

A) write()
B) dump()
C) load()
D) pickle()

ANSWER= B) dump()

37. Which method is used to read Python objects from a binary file?

A) read()
B) load()
C) get()
D) unpickle()

ANSWER= B) load()

38. What mode is used to open a binary file for writing?

A) ‘w’
B) ‘wb’
C) ‘wr’
D) ‘w+’

ANSWER= B) ‘wb’

39. What happens if a binary file is corrupted?

A) It can be easily fixed
B) It becomes unreadable
C) It automatically repairs itself
D) It converts to a text file

ANSWER= B) It becomes unreadable

40. Which exception is raised when the end of a binary file is reached during unpickling?

A) FileNotFoundError
B) EOFError
C) IOError
D) ValueError

ANSWER= B) EOFError

41. What is serialization?

A) Converting Python objects to byte streams
B) Reading text files
C) Writing binary files
D) Closing files

ANSWER= A) Converting Python objects to byte streams

42. What is deserialization?

A) Converting byte streams to Python objects
B) Writing text files
C) Reading binary files
D) Opening files

ANSWER= A) Converting byte streams to Python objects

43. Which module is required for pickling and unpickling?

A) io
B) pickle
C) os
D) sys

ANSWER= B) pickle

44. What is the output of file.closed if the file is open?

A) True
B) False
C) 1
D) 0

ANSWER= B) False

45. Which method is used to forcefully write buffer contents to a file?

A) close()
B) flush()
C) write()
D) dump()

ANSWER= B) flush()

46. What is the purpose of the splitlines() method?

A) To split a file into multiple files
B) To split a string into a list of lines
C) To join lines in a file
D) To close a file

ANSWER= B) To split a string into a list of lines

47. Which of the following is not a file attribute?

A) file.name
B) file.mode
C) file.size
D) file.closed

ANSWER= C) file.size

48. What is the correct way to open a file for reading and writing in binary mode?

A) open(“file.dat”, “r+b”)
B) open(“file.dat”, “rwb”)
C) open(“file.dat”, “br+”)
D) open(“file.dat”, “b+r”)

ANSWER= A) open(“file.dat”, “r+b”)

49. What is the correct syntax for the with clause?

A) with open(“file.txt”, “r”) as f:
B) with open(“file.txt”, “r”) -> f:
C) with open(“file.txt”, “r”) in f:
D) with open(“file.txt”, “r”) f:

ANSWER= A) with open(“file.txt”, “r”) as f:

50. What is the purpose of the io module in Python?

A) To handle file operations
B) To perform mathematical calculations
C) To create graphical interfaces
D) To connect to databases

ANSWER= A) To handle file operations

51. Assertion (A): A text file can be opened and read using a text editor. Reason (R): Text files store data in the form of ASCII or Unicode characters.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

52. Assertion (A): Binary files can be edited easily using Notepad or any text editor. Reason (R): Binary files store information using human-readable characters.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= D) A is false, but R is true

53.Assertion (A): The open() function returns a file object. Reason (R): This file object is used to perform read or write operations.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

54. Assertion (A): Files should be closed using the close() method after operations. Reason (R): Closing a file ensures that all data is flushed and memory is freed.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

55. Assertion (A): The write() method automatically adds a newline character at the end of the string. Reason (R): It is designed to make each write call write a new line.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= D) A is false, but R is true

56. Assertion (A): The writelines() method requires a list or tuple of strings. Reason (R): It adds newline characters between each string automatically.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

57. Assertion (A): Opening a file in 'w' mode erases its existing contents. Reason (R): In this mode, the file pointer is placed at the end of the file.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

58. Assertion (A): The read() method reads the complete file when no parameter is passed. Reason (R): It returns a list of strings when the file is completely read.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

59. Assertion (A): The readline() method reads the file until a newline character is found. Reason (R): It always reads the complete file in one go.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

60. Assertion (A): The readlines() method returns a list containing each line as an element. Reason (R): This method is useful when we want to iterate through lines as list elements.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

61. Assertion (A): The tell() function returns the current byte position of the file object. Reason (R): It is helpful when tracking file offset during file operations.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

62. Assertion (A): The seek() method is used to randomly access a file. Reason (R): It always moves the file pointer to the beginning of the file.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

63. Assertion (A): The with statement is preferred in Python for file handling. Reason (R): It automatically closes the file when execution goes out of scope.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

64. Assertion (A): Pickling converts a Python object into a byte stream. Reason (R): It is useful for storing Python objects in binary files.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

65. Assertion (A): The dump() method writes binary data to a file. Reason (R): The file must be opened in 'rb' mode to use dump().

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

66. Assertion (A): The load() method is used for unpickling data from a binary file. Reason (R): It recreates the original Python object from the byte stream.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A

67. Assertion (A): All Python objects can be pickled. Reason (R): The pickle module can serialize even open file objects and sockets.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= D) A is false, but R is true

68. Assertion (A): A file opened using mode 'a+' allows both appending and reading. Reason (R): The file pointer is initially placed at the beginning of the file.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

69. Assertion (A): If a file opened using 'w' mode does not exist, it will be created. Reason (R): The 'w' mode only works on already existing files.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= C) A is true, but R is false

70. Assertion (A): pickle.load() raises EOFError when end of file is reached. Reason (R): This helps to read binary files using a while loop and try-except block.

A) Both A and R are true, and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true

ANSWER= A) Both A and R are true, and R is the correct explanation of A