CBSE Class 12 Computer Science Question Paper 2014 (Set 91/1 (Outside Delhi))

CBSE CLASS XII Questions

• 1.

  Write the output on execution of the following Python code:
  
  

  def Change(X):
      for K, V in X.items():
          L1.append(K)
          L2.append(V)
  
  D = {1: "ONE", 2: "TWO", 3: "THREE"}
  L1 = []
  L2 = []
  Change(D)
  print(L1)
  print(L2)
  print(D)
  

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• 2.

  The code given below accepts N as an integer argument and returns the sum of all integers from 1 to N. Observe the following code carefully and rewrite it after removing all syntax and logical errors. Underline all the corrections made.
  
  

  def Sum(N):
      S = 0
      for I in range(1, N + 1):
          S = S + I
      return S
  
  print(Sum(10))
  

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• 3.

  Write a Python function that displays all the words starting and ending with a vowel from a text file "Report.txt".
  The consecutive words should be separated by a space in the output.
  For example, if the file contains:
  Once there was a wise man in a village.
  He was an awesome story-teller.
  He was able to keep people anchored while listening to him.
  Then the output should be:
  Once a a awesome able
  

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• 4.

  Write the following user-defined functions in Python:
  
  (i) push_trail(N, myStack): Here N and myStack are lists, and myStack represents a stack.
  The function should push the last 5 elements from the list N onto the stack myStack.
  Assume that N contains at least 5 elements.
  
  (ii) pop_one(myStack): The function should pop an element from the stack myStack, and return this element.
  If the stack is empty, then the function should display the message 'Stack Underflow', and return None.
  
  (iii) display_all(myStack): The function should display all the elements of the stack myStack, without deleting them.
  If the stack is empty, the function should display the message 'Empty Stack'.
  

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• 5.

  Write a function Delete_Theatre() to input the value of Th_ID from the user and permanently delete the corresponding record from the THEATRE table in the CINEMA database.
  
  Given:
  Host: localhost, User: root, Password: Ex2025
  

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• 6.

  Write a Python function that displays all the lines containing the word 'vote' from a text file "Elections.txt".
  For example, if the file contains:
  In an election many people vote to choose their representative.
  The candidate getting the maximum share of votes stands elected.
  Normally, one person has to vote once.
  The process of voting may vary with time and region.
  Then the output should be:
  In an election many people vote to choose their representative.
  Normally, one person has to vote once.
  

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