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12th Standard Computer Science Important 3 Mark Questions

12th Standard

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Computer Science

Time : 01:30:00 Hrs
Total Marks : 90

    Answer all the following questions.

    30 x 3 = 90
  1.  What is the side effect of impure function. Give example.

  2. Identify Which of the following are List, Tuple and class ?
    (a) arr [1, 2, 34]
    (b) arr (1, 2, 34)
    (c) student [rno, name, mark]
    (d) day= (‘sun’, ‘mon’, ‘tue’, ‘wed’)
    (e) x= [2, 5, 6.5, [5, 6], 8.2]
    (f) employee [eno, ename, esal, eaddress]

  3. Why access control is required?

  4. What do you understand by Dynamic programming?

  5. Explain Ternary operator with examples.

  6. Write note on if..else structure.

  7. Write the basic rules for global keyword in python.

  8. What is composition in functions?

  9. Write a Python program to display the given pattern
    C O M P U T E R
    C O M P U T E
    C O M P U T
    C O M P U
    C O M P
    C O M
    C O
    C

  10. What is the use of format( )? Give an example.

  11. What are the advantages of Tuples over a list?

  12. Explain the difference between del and clear( ) in dictionary with an example.

  13. What are class members? How do you define it?

  14. What is the output of the following program?
    class Greeting:
    def __init__(self, name):
    self.__name = name
    def display(self):
    print("Good Morning ", self.__name)
    obj=Greeting ('Bindu Madhavan')
    obj.display()

  15. Explain Cartesian Product with a suitable example.

  16. Write a note on different types of DBMS users.

  17. Write a SQL statement to modify the student table structure by adding a new field.

  18. Write the use of Savepoint command with an example.

  19. Write a note on open() function of python. What is the difference between the two methods?

  20. What is the difference between the write mode and append mode.

  21. Differentiate PYTHON and C++.

  22. Identify the module, operator, definition name for the following
    welcome.display().

  23. What is the use of Where Clause.Give a python statement Using the where clause.

  24. Write any three uses of data visualization.

  25. Write a short note an syntax for function types.

  26. How will you access the list elements using multiple assignments?

  27. How the variable scopes are prioritized?

  28. Write a pseudo code for Binary search

  29. Fill up the blanks to get the following output from Python code given.
    Output:
    Enter Number 1: 34
    Enter Number 2: 70
    The Sum = 104
    Code:
    X = \(\overset { (1) }{ \_ \_ \_ \_ \_ } \) (input ("Enter Number 1:"))
    Y = \(\overset { (2) }{ \_ \_ \_ \_ \_ } \) (\(\overset { (3) }{ \_ \_ \_ \_ \_ } \) ("Enter Number 2 :"))
    \(\overset { (4) }{ \_ \_ \_ \_ \_ } \) ("The sum =", \(\overset { (5) }{ \_ \_ \_ \_ \_ } \))

  30. Write a Program to check the number is odd or even.

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