1. What is meant by Object Oriented Programming?

OOP is a method of programming in which programs are created with collections of objects. Each object is an instance of a class and each class belong to a hierarchy.
OOP is a method of programming in which programs are created with collections of data types. Each data type is important.
Object Oriented Programming means that you will have to create Object only.
There is no OOP language.

2. What is a Class?

Class does not gives definition of encapsulation
Class is a blue print or a template for a set of objects that share a common structure and a common behaviour.
Sometimes, Class gives definition of encapsulation
None of the above

3. What is an Object?

Class is the best example of object.
Object is an instance of a class. It has state,behaviour and identity. It is also called as an instance of a class.
Object is not an instance of a class. But, it has state,behaviour and identity. Object is not realtime entity.
I don't know.

4. What is an Instance?

Java does not support instance.
An instance has state, behaviour and identity. The structure and behaviour of similar classes are defined in their common class. An instance is also called as an object.
It is a type of variable.
There is instance keyword, but you need to import some packages.

5. What are the core OOP's concepts?

Only Encapsulation
Abstraction, Encapsulation,Inheritance and Polymorphism are the core OOP's concepts.
Inheritance
None

6. What is an Interface?

It is a class.
Interface is an outside view of a class or object which emphaizes its abstraction while hiding its structure and secrets of its behaviour.
It is an object.
It is a pure object.

7. What is a base class?

This is the first class of any project.
Base class is the most generalised class in a class structure. Most applications have such root classes. In Java, Object is the base class for all classes.
There is no base class and we can't define it.
All are true.

8. What is a subclass?

Subclass is not a class that inherits from one or more classes.
Subclass is a class that inherits from one or more classes.
It can be define but in C++.
All are true.

9. What is a superclass?

Superclass is not a class from which another class inherits.
Superclass is a class from which another class inherits.
Superclass is a interface from which another class inherits.
None

10. What is meant by Binding?

Binding denotes class of a name with a another class
Binding denotes association of a name with a class
both are true
both are false