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12th Standard Computer Science English Medium Reduced Syllabus Model Question paper - 2021 Part - 1

12th Standard

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Computer Science

Time : 02:45:00 Hrs
Total Marks : 70

      Part I

      Answer all the questions.

      Choose the most suitable answer from the given four alternatives and write the option code with the corresponding answer.

    12 x 1 = 12
  1. Which of the following carries out the instructions defined in the interface?

    (a)

    Operating System

    (b)

    Compiler

    (c)

    Implementation

    (d)

    Interpreter

  2. The functions which cause side effects to the arguments passed are called

    (a)

    impure function

    (b)

    Partial Functions

    (c)

    Dynamic Functions

    (d)

    Pure functions

  3. The data type whose representation is known are called

    (a)

    Built in datatype

    (b)

    Derived datatype

    (c)

    Concrete datatype

    (d)

    Abstract datatype

  4. Which of the following is constructed by placing expressions within square brackets?

    (a)

    Tuples

    (b)

    Lists

    (c)

    Classes

    (d)

    quadrats

  5. How many access control keywords are there?

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    6

  6. Two main measures for the efficiency of an algorithm are

    (a)

    Processor and memory

    (b)

    Complexity and capacity

    (c)

    Time and space

    (d)

    Data and space

  7. Which of the following is a raw data given in a variable or constant?

    (a)

    Information

    (b)

    Delimiters

    (c)

    Literal

    (d)

    Keywords

  8. How many keywords are there to achieve jump statements in python?

    (a)

    2

    (b)

    4

    (c)

    3

    (d)

    5

  9. Which of the following keyword is used to define anonymous function?

    (a)

    Def

    (b)

    Alpha

    (c)

    Lambda

    (d)

    Range

  10. In Python, a class is defined by using the _______ class.

    (a)

    Operator

    (b)

    Identifier

    (c)

    Object

    (d)

    Keyword

  11. Which of the following begin with a keyword and consists of keyword and argument?

    (a)

    Commands

    (b)

    Statement

    (c)

    Clauses

    (d)

    Data

  12. Which of the following executes the SQL command to perform some action?

    (a)

    Execute()

    (b)

    Key()

    (c)

    Cursor()

    (d)

    run()

    1. Part II

      Answer all the questions. Question no. 17 is compulsory.


    5 x 2 = 10
  13. Name the tokens where the whitespace in necessary in python.

  14. Name any four keywords in Python.

  15. Write the syntax of using for keyword to access all elements in the list. Pg 136 x 9

  16. Differentiate IN and NOT IN keywords.

  17. What are used a dictionary keys?

    1. Part III

      Answer all the  questions. Question no. 23 is compulsory.


    6 x 3 = 18
  18. Why the following program give an error while displaying the value of n2. Give Reason.

  19. Read the following program. Answer the following question. Class sample:
    x, y= 10, 20
    s= sample ()
    print (s. x + s. y)
    1. What does sample denotes?
    2. What does x, y denotes?
    3. What does s denotes?

  20. Write the importance of using data model.

  21. What are the ways to write a new or edit are existing CSV file in python?

  22. Write the sqlite steps to connect the database.

  23. Write a python code to display the following plot.

    1. Part IV

      Answer all the questions.


    6 x 5 = 30
  24. Write any Five Characteristics of Modules

  25. Discuss in detail about Tokens in Python

  26. Explain the following built-in functions.
    (a) id()
    (b) chr()
    (c) round()
    (d) type()
    (e) pow()

  27. Explain the different set operations supported by python with suitable example.

  28. Explain the different types of relationship mapping.

  29. Construct the following SQL statements in the student table-
    (i) SELECT statement using GROUP BY clause.
    (ii) SELECT statement using ORDER BY clause.

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