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12th Standard Computer Science English Medium Free Online Test One Mark Questions with Answer Key 2020 - Part Seven

12th Standard

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Computer Science

Time : 00:25:00 Hrs
Total Marks : 25

    Answer all the questions

    25 x 1 = 25
  1. Which of the following defines what an object can do?

    (a)

    Operating System

    (b)

    Compiler

    (c)

    Interface

    (d)

    Interpreter

  2. Which of the following is a description of all functions in object oriented programming language?

    (a)

    Implementation

    (b)

    parameter

    (c)

    Interface

    (d)

    Arugument

  3. The data type whose representation is unknown are called

    (a)

    Built in datatype

    (b)

    Derived datatype

    (c)

    Concrete datatype

    (d)

    Abstract datatype

  4. The process of providing only the essentials and hiding the details is known as

    (a)

    Functions

    (b)

    Abstraction

    (c)

    Encapsulation

    (d)

    Pairs

  5. Which of the following are functions that build the abstract datatypet?

    (a)

    Constructors

    (b)

    Destructors

    (c)

    Selectors

    (d)

    All of these

  6. The process of subdividing a computer program into separate sub-programs is called

    (a)

    Procedural Programming

    (b)

    Modular programming

    (c)

    Event Driven Programming

    (d)

    Object oriented Programming

  7. Write the below interns of hierarchy (highest to lowest)?
    (1) Reversed names in built in functions
    (2) Defined inside function
    (3) Defined inside enclosing function
    (4) Defined at the uppermost level

    (a)

    3,2,1,4

    (b)

    1,4,2,3

    (c)

    2,3, 1,4

    (d)

    2,3,4, 1

  8. Which of the following is not a classical object oriented language

    (a)

    C++

    (b)

    Java

    (c)

    Python

    (d)

    C

  9. Time complexity of bubble sort in best case is

    (a)

    θ (n)

    (b)

    θ (nlogn)

    (c)

    θ (n2)

    (d)

    θ (n(logn) 2)

  10. Which characteristics of algorithm defined the operation involving division by zero?

    (a)

    Finiteness

    (b)

    Definiteness

    (c)

    Input

    (d)

    Correctness

  11. How many asymptotic notations are mostly used to represent time complexity of algorithms?

    (a)

    Three

    (b)

    Two

    (c)

    One

    (d)

    Many

  12. Which of the following is not a Keyword in Python ?

    (a)

    break

    (b)

    while

    (c)

    continue

    (d)

    operators

  13. Which of the following function in Python is used to convert strings data as integer data explicitly?

    (a)

    integer ()

    (b)

    num ()

    (c)

    int ()

    (d)

    number ()

  14. What is the output of the following snippet?
    T=1
    while T:
    print(True)
    break

    (a)

    False

    (b)

    True

    (c)

    0

    (d)

    no output

  15. Read the following statement and choose the correct statement(s).
    (I) In Python, you don’t have to mention the specific data types while defining function.
    (II) Python keywords can be used as function name.

    (a)

    I is correct and II is wrong

    (b)

    Both are correct

    (c)

    I is wrong and II is correct

    (d)

    Both are wrong

  16. What is stride?

    (a)

    index value of slide operation

    (b)

    first argument of slice operation

    (c)

    second argument of slice operation

    (d)

    third argument of slice operation

  17. If List=[17,23,41,10] then List.append(32) will result

    (a)

    [32,17,23,41,10]

    (b)

    [17,23,41,10,32]

    (c)

    [10,17,23,32,41]

    (d)

    [41,32,23,17,10]

  18. How many times the following loop executes?
    li = [10,23,41,75]
    i=0
    while i > = -4;
    print (li [i])
    i+ = 1

    (a)

    -4

    (b)

    4

    (c)

    0

    (d)

    Error

  19. What is the output for the following?
    li = [36, 12, 12]
    x = mylist. index (12)
    print (x)

    (a)

    0

    (b)

    1

    (c)

    2

    (d)

    1.5

  20. Which of the following can be defined with or without()?

    (a)

    list

    (b)

    set

    (c)

    dictionary

    (d)

    none of these

  21. Write the output for the following
    A = {1, 2, 4, 5}
    B = {1, 6, 7, 5}
    print (A + B)

    (a)

    {1, 2, 4, 5, 6, 7}

    (b)

    [2,4]

    (c)

    {2,4}

    (d)

    (2,4)

  22. __________ represents an abstraction of the sequence of numbers

    (a)

    Dictionary

    (b)

    List

    (c)

    Set

    (d)

    Tuple

  23. Which of the following class declaration is correct?

    (a)

    class class_name

    (b)

    class class_name<>

    (c)

    class class_name:

    (d)

    class class_name[ ]

  24. The command to delete a table is

    (a)

    DROP

    (b)

    DELETE

    (c)

    DELETE ALL

    (d)

    ALTER TABLE

  25. The expansion of API is

    (a)

    Application Programming Interpreter

    (b)

    Application Programming Interface

    (c)

    Application Performing Interface

    (d)

    Application Programming Interlink

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