Classes and Objects MCQ

Test your knowledge with important Classes and Objects MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Classes and Objects MCQs at Bissoy

• 10) Destructor is defined as _______
  ক

  Const matrix X(m, n);

  খ

  matrix:: ~matrix(){ }

  গ

  matrix:: matrix(voi

  ঘ

  [ matrix()
• When an object is created and initialized at the same time, a _________ constructor gets called.
  ক

  Inline Constructor

  খ

  Copy Constructor

  গ

  Default Constructor

  ঘ

  Parameterized Constructor
• 8) The constructors that can take arguments are called ___________
  ক

  Default Constructor

  খ

  Copy Constructor

  গ

  Parameterized Constructor

  ঘ

  Dynamic Constructor
• 7) Which of the following statements about a constructor is not true?
  ক

  We cannot refer to their addresses.

  খ

  They cannot be inherited, though a derived class can call the base class constructor.

  গ

  An object with a constructor can be used as a member of a union.

  ঘ

  Constructors cannot be virtual.
• A ________ is a special member function whose task is to initialize the objects of its class.
  ক

  Constructor

  খ

  Destructor

  গ

  Selector

  ঘ

  Iterator
• A ________ is a description of a set of objects that share the same attributes, operations, relationships, and semantics.
  ক

  Structure

  খ

  Class

  গ

  Constructor

  ঘ

  Function
• 4) Which of the following object types are generally autonomous, meaning that they can exhibit some behavior without being operated upon by another object
  ক

  Passive

  খ

  Active

  গ

  Both a and b

  ঘ

  None of the mentioned
• 1) Which of the following property is associated with objects?
  ক

  State

  খ

  Behavior

  গ

  Identity

  ঘ

  All of the mentioned
• What does print(Test.__name__) display (assuming Test is the name of the class)?
  ক

  ()

  খ

  Exception is thrown

  গ

  Test

  ঘ

  __main__
• __del__ method is used to destroy instances of a class.
  ক

  True

  খ

  False
• What is delattr(obj,name) used for?
  ক

  To print deleted attribute

  খ

  To delete an attribute

  গ

  To check if an attribute is deleted or not

  ঘ

  To set an attribute
• What is hasattr(obj,name) used for?
  ক

  To access the attribute of the object

  খ

  To delete an attribute

  গ

  To check if an attribute exists or not

  ঘ

  To set an attribute
• Special methods need to be explicitly called during object creation.
  ক

  True

  খ

  False
• What are the methods which begin and end with two underscore characters called?
  ক

  Special methods

  খ

  In-built methods

  গ

  User-defined methods

  ঘ

  Additional methods
• Which of the following is not a class method?
  ক

  Non-static

  খ

  Static

  গ

  Bounded

  ঘ

  Unbounded
• The assignment of more than one function to a particular operator is _______
  ক

  Operator over-assignment

  খ

  Operator overriding

  গ

  Operator overloading

  ঘ

  Operator instance
• What is Instantiation in terms of OOP terminology?
  ক

  Deleting an instance of class

  খ

  Modifying an instance of class

  গ

  Copying an instance of class

  ঘ

  Creating an instance of class
• What is getattr() used for?
  ক

  To access the attribute of the object

  খ

  To delete an attribute

  গ

  To check if an attribute exists or not

  ঘ

  To set an attribute
• What is setattr() used for?
  ক

  To access the attribute of the object

  খ

  To set an attribute

  গ

  To check if an attribute exists or not

  ঘ

  To delete an attribute
• _____ is used to create an object.
  ক

  class

  খ

  constructor

  গ

  User-defined functions

  ঘ

  In-built functions
• _____ represents an entity in the real world with its identity and behaviour.
  ক

  A method

  খ

  An object

  গ

  A class

  ঘ

  An operator