12th Class Computers Science Sample Paper

done Python Revision Tour-Sample Paper-4 Total Questions - 17    [Download]

• question_answer1)
  Dictionaries are mutable with elements in the form of a key:element pair.
  A)
  True     
  done clear
  B)
  False
  done clear
  C)
  None of these
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer2)

  To create an empty dictionary, D:

   
  A)
  Both statements are true
  done clear
  B)
  only statement 1 is true
  done clear
  C)
  only statement 2 is true
  done clear
  D)
  both statements are false
  done clear
  View Answer play_arrow

• question_answer3)
  Dictionaries are also called associative arrays, mappings or hashes.
  A)
  True     
  done clear
  B)
  False
  done clear
  C)
  None of these
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer4)
  As dictionaries are mutable, so, a user can change the value of keys.
  A)
  True                 
  done clear
  B)
  False
  done clear
  C)
  None of these
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer5)
  A dictionary operation that takes a key and finds the corresponding value, is called…………….
  A)
  vlookup
  done clear
  B)
  searching
  done clear
  C)
  lookup
  done clear
  D)
  None of the above
  done clear
  View Answer play_arrow

• question_answer6)
  To see all the values of a dictionary .............. ……………function is used
  A)
  value()  
  done clear
  B)
  item()
  done clear
  C)
  items()  
  done clear
  D)
  values()
  done clear
  View Answer play_arrow

• question_answer7)
  To see all the keys of a dictionary …..........……….. function is used
  A)
  key()                
  done clear
  B)
  item()
  done clear
  C)
  items()              
  done clear
  D)
  keys()
  done clear
  View Answer play_arrow

• question_answer8)
  If you want to add an element into a dictionary then key must not exist, but if you want to update an element then key must exist in a dictionary.
  A)
  True     
  done clear
  B)
  False
  done clear
  C)
  None of these
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer9)
  The membership operator (in, not in) work on dictionary with......................
  A)
  keys    
  done clear
  B)
  values
  done clear
  C)
  Both a and b     
  done clear
  D)
  None of the above
  done clear
  View Answer play_arrow

• question_answer10)
  Clear() and del are the same for deleting a dictionary
  A)
  True                 
  done clear
  B)
  False
  done clear
  C)
  None of these
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer11)
  .................................of a dictionary must be unique.
  A)
  keys   
  done clear
  B)
  values
  done clear
  C)
  Both a and b     
  done clear
  D)
  None of the above
  done clear
  View Answer play_arrow

• question_answer12)
  Choose the correct way to declare a dictionary :
  A)
  dic={'CBSE':1,'Exam':2,'2022':3}
  done clear
  B)
  dic={;CBSE':1,'Exam':2,'2022':3}
  done clear
  C)
  dic={'CBSE':1,'Exam':2,'2022'=3}
  done clear
  D)
  dic={'CBSE':1,'Exam':2,'2022'3}
  done clear
  View Answer play_arrow

• question_answer13)

  What will be the output of the given statement.

   
  A)
  Trigger    
  done clear
  B)
  Study
  done clear
  C)
  Student            
  done clear
  D)
  CBSE
  done clear
  View Answer play_arrow

• question_answer14)

  What will be the output of the given statement?

   
  A)
  Study  
  done clear
  B)
  Trigger
  done clear
  C)
  Generate Error   
  done clear
  D)
  None of the above
  done clear
  View Answer play_arrow

• question_answer15)
  In ........................... sorting each element is compared with the adjacent element and the elements are swapped if they are found in wrong order.
  A)
  Bubble    
  done clear
  B)
  Selection
  done clear
  C)
  Insertion           
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer16)
  In ........................... sorting each successive element is picked & inserted at an appropriate position in the previously sorted array.
  A)
  Bubble     
  done clear
  B)
  Selection
  done clear
  C)
  Insertion   
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer17)

  What will be the result after 3rd pass of insertion sort if applied on the following list?

  [16, 19, 11, 15, 10]

  A)
  [11, 15, 16, 19, 10] 
  done clear
  B)
  [16, 19, 11, 15. 10]
  done clear
  C)
  [16, 11, 15, 19, 10]        
  done clear
  D)
  [16, 19, 10, 11, 15]
  done clear
  View Answer play_arrow