Practice inheritance Quizzes
Prepare for technical interviews with high-quality inheritance quizzes that mirror real industry questions. Each quiz helps you master concepts, improve problem-solving speed and gain the confidence needed for coding tests. Whether revising basics or tackling advanced scenarios, these quizzes ensure structured, effective preparation.
Explore All inheritance Quizzes
Learn inheritance step by step with interactive quizzes designed for beginners and learners revising key concepts. Build a strong foundation with clear, structured practice in inheritance.
Question 1
What is inheritance in Object-Oriented Programming (OOP)?
1
The process of restricting access to data members
2
The ability to define multiple methods with the same name
3
The mechanism of wrapping data and methods into a single unit
4
The ability of one class to derive properties and behaviors from another class
Question 2
What is multilevel inheritance?
1
When multiple classes inherit a single base class
2
When a class does not inherit anything
3
When a class inherits from a derived class
4
When a class inherits multiple classes
Question 3
Which of the following statements is true about constructors in inheritance?
1
Constructors are not inherited in OOP
2
A derived class constructor can call only its own constructor
3
A derived class constructor automatically calls the base class constructor
4
A base class constructor is never called when an object of the derived class is created
Question 4
What is the keyword used to inherit a class in C#?
1
: (colon)
2
extends
3
inherits
4
implements
Question 5
Which keyword is used to prevent a class from being inherited?
1
abstract
2
static
3
private
4
sealed
Question 6
Which of the following correctly implements an interface in C#?
1
interface ITest { void Show(); }
class MyClass : ITest { public void Show() { Console.WriteLine("Hello"); } }2
interface ITest { void Show(); }
class MyClass { public void Show() { Console.WriteLine("Hello"); } }3
interface ITest { void Show(); }
class MyClass : ITest { void Show() { Console.WriteLine("Hello"); } }4
interface ITest { void Show(); }
class MyClass : ITest { protected void Show() { Console.WriteLine("Hello"); } }Question 7
What type of inheritance is not supported in C#?
1
Hierarchical Inheritance
2
Single Inheritance
3
Multiple Inheritance
4
Multilevel Inheritance
Question 8
What is the output of the following code?
#include <iostream>
using namespace std;
class A {
public:
A() { cout << "A "; }
};
class B : public A {
public:
B() { cout << "B "; }
};
int main() {
B obj;
return 0;
}1
B A
2
A B
3
Runtime Error
4
Compilation error
Question 9
In C++, which type of inheritance allows all members of the base class to become private in the derived class?
1
Multilevel Inheritance
2
Public Inheritance
3
Protected Inheritance
4
Private Inheritance
Question 10
What happens when a base class function is declared as virtual in C++?
1
The function cannot have a body
2
The function cannot be overridden in derived classes
3
The function call is resolved at compile-time
4
The function call is resolved at runtime using vtable
Question 11
What happens if a class contains at least one pure virtual function in C++?
1
It can be instantiated normally
2
It cannot have constructors
3
It does not support polymorphism
4
It becomes an abstract class
Question 12
What is the default behavior if a base class pointer points to a derived class object but does not use virtual functions in C++?
1
The derived class method is called
2
Compilation error
3
The base class method is called
4
Runtime error
Question 13
What will happen if a C++ derived class does not override a virtual function of the base class?
1
Compilation error
2
The program crashes
3
Undefined behavior
4
Runtime Error
5
The base class function is called
Question 14
Which statement is true about interfaces and abstract classes?
1
Interfaces cannot be implemented by multiple classes
2
An abstract class can have both abstract and concrete methods
3
Abstract classes cannot have concrete methods
4
Interfaces can have constructors
Question 15
Which of the following statements about interfaces in Java is true?
1
An interface supports multiple inheritance
2
A class can implement only one interface
3
An interface can have constructors
4
An interface can have final methods