Concept Of Object Oriented Programs In Python — Part 1 MCQs with Explanations

To model real-world entities and their interactions is the correct answer to “What is the main goal of object-oriented programming (OOP)”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

An instance of a class is the correct answer to “What is an object in the context of object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

A blueprint for creating objects is the correct answer to “What is a class in the context of object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Inheritance is the correct answer to “Which principle of OOP promotes the reusability of code and allows a class to inherit properties and methods from another class”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It hides complex implementation details and only exposes essential features is the correct answer to “What is the purpose of abstraction in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Determines the class name of any value is the correct answer to “What does built-in function type do in context of classes”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

A single subclass derives from a single superclass is the correct answer to “What does single-level inheritance mean”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Allows for objects of different types and behaviour to be treated as the same general type is the correct answer to “Which of the following best describes polymorphism”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It hides complex implementation details and only exposes essential features is the correct answer to “What does encapsulation refer to in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It promotes code reusability and allows the creation of a new class based on an existing class is the correct answer to “What is the benefit of using inheritance in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Encapsulation is the correct answer to “Which principle of OOP emphasizes the bundling of data and methods that operate on the data into a single unit”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Ability of a class to derive members of another class as a part of its own definition is the correct answer to “Which of the following best describes inheritance”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Private members of a class can be inherited and accessed is the correct answer to “Which of the following statements is wrong about inheritance”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Determines class description of any built-in type is the correct answer to “What does built-in function help do in context of classes”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

The value of a private variable in the superclass can be changed in the subclass is the correct answer to “Which of the following statements isn't true”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It allows objects of different classes to be treated as objects of the same class is the correct answer to “What is polymorphism in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

A class is a blueprint for creating objects, while an object is an instance of a class is the correct answer to “What is the difference between a class and an object in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

A variable shared among all instances of a class is the correct answer to “What is a class variable in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

The program will have a more elegant design and will be easier to maintain and update is the correct answer to “What is the biggest reason for the use of polymorphism”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Less restriction on the type values that can be passed to a given method is the correct answer to “What is the use of duck typing”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It initializes the attributes of an object is the correct answer to “What is the purpose of the constructor (__init__ method) in a class in Python”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

True is the correct answer to “What will be the output of the following Python code? >>> class A: pass >>> class B(A): pass >>> obj=B() >>> isinstance(obj,A)”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

2 is the correct answer to “What will be the output of the following Python code? class Demo: def __init__(self): self.x = 1 def change(self): self.x = 10 class Demo_derived(Demo): def change(self): self.x=self.x+1 return self.x def main(): obj = Demo_derived() print(obj.change()) main()”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

To hide complex implementation details and focus on the essential features is the correct answer to “What is the purpose of using abstraction in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

1 1 1 is the correct answer to “What will be the output of the following Python code? class A: def __str__(self): return '1' class B(A): def __init__(self): super().__init__() class C(B): def __init__(self): super().__init__() def main(): obj1 = B() obj2 = A() obj3 = C() print(obj1, obj2,obj3) main()”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

The program runs fine and 1 is printed is the correct answer to “What will be the output of the following Python code? class Demo: def __init__(self): self.a = 1 self.__b = 1 def display(self): return self.__b obj = Demo() print(obj.a)”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

True is the correct answer to “A class in which one or more methods are only implemented to raise an exception is called an abstract class.”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It allows a subclass to inherit attributes and methods from a parent class is the correct answer to “How does inheritance promote code reusability in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It hides complex implementation details and focuses on the essential features is the correct answer to “What is the main advantage of using abstraction in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Inheritance is the correct answer to “Which principle of OOP is related to creating new classes by extending existing classes”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

test of B called test of C called test of A called is the correct answer to “What will be the output of the following Python code? class A: def test(self): print("test of A called") class B(A): def test(self): print("test of B called") super().test() class C(A): def test(self): print("test of C called") super().test() class D(B,C): def test2(self): print("test of D called") obj=D() obj.test()”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

A B is the correct answer to “What will be the output of the following Python code? class A: def one(self): return self.two() def two(self): return 'A' class B(A): def two(self): return 'B' obj1=A() obj2=B() print(obj1.two(),obj2.two())”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Multiple inheritance is the correct answer to “What type of inheritance is illustrated in the following Python code? class A(): pass class B(): pass class C(A,B): pass”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

5 is the correct answer to “What will be the output of the following Python code? class A: def __init__(self): self._x = 5 class B(A): def display(self): print(self._x) def main(): obj = B() obj.display() main()”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Error because the member shape is a protected member is the correct answer to “What will be the output of the following Python code? class objects: def __init__(self): self.colour = None self._shape = "Circle" def display(self, s): self._shape = s obj=objects() print(obj._objects_shape)”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Error, private class member can't be accessed in a subclass is the correct answer to “What will be the output of the following Python code? class A: def __init__(self): self.__x = 1 class B(A): def display(self): print(self.__x) def main(): obj = B() obj.display() main()”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

3 1 is the correct answer to “What will be the output of the following Python code? class A: def __init__(self,x): self.x = x def count(self,x): self.x = self.x+1 class B(A): def __init__(self, y=0): A.__init__(self, 3) self.y = y def count(self): self.y += 1 def main(): obj = B() obj.count() print(obj.x, obj.y) main()”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

Means of bundling instance variables and methods in order to restrict access to certain class members is the correct answer to “Which of the following is the most suitable definition for encapsulation”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

It is used to call a method from the parent class is the correct answer to “What is the purpose of the super() function in object-oriented programming”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.

True is the correct answer to “The purpose of name mangling is to avoid unintentional access of private class members.”. This question is standard in competitive examination syllabi for Concept Of Object Oriented Programs In Python.