Polymorphism & Inheritance MCQs in OOP For Exams Part 1. This mcqs will helps in your competitive exams, placements exams and SPPU online exam 2020.
1 Polymorphism is supported by the c++ by using following ways
A function overloading
B operator overloading
C virtual functions
D all of the above
Answer D
2 Compile time polymorphism is supported by
A function overloading
B virtual function
C operator overloading
D both a&c
Answer D
3 Run time polymorphism is supported by
A function overloading
B operator overloading
C virtual function
D both a and b
Answer C
4 Selecting the appropriate overloaded function by the compiler is known as
A late binding
B early binding
C both a and b
D none of the above
Answer B
5 object to function binding is done at compile time then is it known as
A early binding
B compile time binding
C none of the above
D both a and b
Answer D
6 Run time polymorphism is done by using
A function overloading
B operator overloading
C virtual function
D none of the above
Answer C
7 Operator overloading is ---.
A run time polymorphism
B compile time polymorphism
C none of the above
D both a and b
Answer B
8 Which of the following operator cannot be overloaded
A scope resolution operator(::)
B Size of operator (sizeof[])
C Conditional operator(?:)
D All of the above
Answer D
9 Which of the operator cannot be overloaded
A >=
B &
C <=
D ::
Answer D
10 While performing operator overloading which function/keyword we have to use
A Function
B Operator
C Op
D none of the above
Answer B
11 Which of the statement is not true about operator overloading
A we can overload only existing operator
B basic meaning cannot be changed
C binary operator should have return type
D All of the above
Answer D
12 Pick up the correct statement related with operator overloading
A we can overload a class access operator
B we can change the meaning of basic operator
C binary operator should have a return type
D both a and b
Answer C
13 We are overloading a unary operator without friend function how many argument we have
to pass
A 1
B 2
C 0
D none of the above
Answer C
14 Suppose we are overloading a binary operator with friend function, how many parameter
of argument we have to pass
A 1
B 2
C 3
D none of ths above
Answer B
15 we are overloading a binary operator without friend function how many argument we
have to pass
A 1
B 2
C 0
D none of the abve
Answer A
16 What is polymorphism
A it is ability to take many forms
B it is instance of class
C one class acquire the properties of another class
D All of the above
Answer A
17 What is true about the operator overloading
A with friend function we need to pass two arguments for binary operator
B with friend function we need to pass one arguments for unary operator
C both a and b
D none of the above
Answer C
18______allows you to give special meaning to some operator when there are operands
associated with it.
A function overloading
B virtual function
C operator overloading
D none of the above
Answer C
19 Converting from small to larger data type is known as ____.
A promotion
B operator
C polymorphism
D none of the above
Answer A
20 what are the types of type conversion
A implicit
B explicit
C both a and b
D none of the above
Answer C
21 Reusability is supported by following feature
A polymorphisms
B message passing
C inheritance
D operator overloading
Answer C
22 Deriving a new class from a base class is known as __.
A polymorphisms
B inheritance
C message passing
D operator overloading
Answer B
23 Base class is also known as___.
A super class
B parent class
C both a and b
D none of the above
Answer C
24 Child class is also known as
A sub class
B derived class
C both a and b
D known class
Answer C
25 Derived class___ cannot access from base class
A constructor
B destructors
C copy constructor
D all of the above
Answer D
26 we can derive a new class from a derived class
A true
B false
Answer A
27 How many parameter does a conversion operator take?
A 0
B 2
C 3
D as many as possible
Answer A
28__is used to define pure virtual function?
A &
B =0
C @
D *
Answer B
29 Which is also known as abstract class?
A virtual function
B pure virtual function
C derived class function
D base class function
Answer B
30 pick the correct option
A We can make the instance of the abstract class
B We can not make the instance of the abstract class
C both a and b
D none of the above
Answer B
