CBSE Class 12 Computer Science Question Paper 2012 (Set I (Outside Delhi))

CBSE CLASS XII Questions

• 1.

  Write the output of the following code:

  def Exam2026(given) :
      new=[]
      for ch in given[1:-1]:
          if ch.isupper():
              new.reverse()
          elif ch not in new:
              new.append(ch)
          elif ch in new:
              new.pop()
      print(new)
  Exam2026("Gold-24Medals")

  View Solution

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• 2.

  Abhishek has created a table, named STOCK, with a set of records to maintain the data of packaged milk in his shop. After creating the table, he entered the data and the table looked as follows:

  Code	Type	Volume	Qty	Price
  AF0.5	F	0.5	300	38.00
  MF0.5	F	0.5	250	36.50
  MT1.0	T	1.0	150	64.00
  AT1.0	T	1.0	100	66.00
  PD1.0	D	1.0	50	52.00
  PT0.5	T	0.5	78	30.00

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• 3.

  NextStep is an organization which has a pool of resource persons to conduct training workshops on various topics related to ICT. The data of all its Resource Persons is stored in a binary file RESOURCES.DAT using the following record structure (each record is a tuple):

  (R_ID, R_Name, R_Expertise, Charges)

  where R_ID – Resource Person's ID (An integer); R_Name – Resource Person's Name (A string); R_Expertise – Area of expertise of the Resource Person; Charges – Charges (in rupees) per hour to conduct a workshop.

  For example, a record in the file is:

  (12, 'P. Velusami','Machine Learning',5000)

  In this context, write the following user defined functions in Python:

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• 4.

  Write a Python function that displays the words in which the lowercase letter 'e' appears at least twice in the text file 'Space.txt'. For example, if the file contains:

  Space exploration has unlocked incredible advancements in technology and science. Since the first moon landing in 1969, space agencies have sent probes to Mars, Jupiter and beyond. The ISS, orbiting Earth at about 400 km, serves as a hub for research. With missions planned for 2030, humanity’s cosmic journey continues!

  Then the function should display:

  incredible advancements science. agencies serves research.

  View Solution

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• 5.

  A stack named FruitStack, implemented using list, contains records of some fruits. Each record is represented as a dictionary with keys 'Name', 'Origin', 'Price', and 'Expiry'. A sample record is given here:

  {'Name':'Apple','Origin':'France','Price':120,'Expiry':'12-08-2025'}

  Write the following user-defined functions in Python to perform the specified operations on FruitStack:

  (i) push_fruit(FruitStack, Fruit): This function takes the stack FruitStack and a new record Fruit as arguments and pushes the record stored in Fruit onto FruitStack if the Price is less than 100.

  (ii) pop_fruit(FruitStack): This function pops the topmost record from the stack and returns it. If the stack is already empty, the function should display “UNDERFLOW”.

  (iii) display(FruitStack): This function displays all the elements of the stack starting from the topmost element. If the stack is empty, the function should display 'EMPTY STACK'.

  View Solution

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• 6.

  Assume that you are the Manager of the Loans department of a Finance House. To keep track of the loans you have created two tables: CUSTOMERS and LOANS. The sample data in these tables is given below:

  Table: CUSTOMERS

  C_ID	C_Name	Phone
  00001	Raj Malhotra	1234567890
  00003	David Xavier	3456789012
  00004	Damini Iyer	3156789012
  00008	Abdul	2345678901

  Table: LOANS

  SNo	C_ID	L_Amt	L_Date	Terms	RoI
  1	00003	200000	2025-12-06	60	7.80
  2	00008	2500000	2023-08-09	60	9.00
  3	00001	500000	2025-08-13	48	6.00
  4	00003	300000	2026-12-07	36	8.00
  5	00004	600000	2026-12-07	60	6.00

  Note: The tables may contain more records than shown here.

  The management of the Finance House needs certain reports from you. Write the queries to extract the following data to create the reports: