Object Oriented Programming Goyal Brothers Ch-1 Computer ICSE Class-10

Object Oriented Programming Goyal Brothers Ch-1 Computer ICSE Class-10 Solution. The step by step solution of Exercise (Objective Type Question, Fill in the blanks, State True or False with Subjective Type Questions. Visit official website cisce for detail information about class 10 computer.

Object Oriented Programming Goyal Brothers Ch-1 Computer ICSE Class-10

-:Select Topics:-

Objective Type Questions

Very Short/Short Answer Questions

Long Answer Questions

Notes on Object Oriented Programming Ch-1 Computer ICSE Class-10


Any entity that has state and behavior is known as an object. For example, a chair, pen, table, keyboard, bike, etc. It can be physical or logical.

An Object can be defined as an instance of a class. An object contains an address and takes up some space in memory. Objects can communicate without knowing the details of each other’s data or code. The only necessary thing is the type of message accepted and the type of response returned by the objects.

Example: A dog is an object because it has states like color, name, breed, etc. as well as behaviors like wagging the tail, barking, eating, etc.


Collection of objects is called class. It is a logical entity.

A class can also be defined as a blueprint from which you can create an individual object. Class doesn’t consume any space.


When one object acquires all the properties and behaviors of a parent object, it is known as inheritance. It provides code reusability. It is used to achieve runtime polymorphism.


If one task is performed in different ways, it is known as polymorphism. For example: to convince the customer differently, to draw something, for example, shape, triangle, rectangle, etc.

In Java, we use method overloading and method overriding to achieve polymorphism.

Another example can be to speak something; for example, a cat speaks meow, dog barks woof, etc.


Hiding internal details and showing functionality is known as abstraction. For example phone call, we don’t know the internal processing.

In Java, we use abstract class and interface to achieve abstraction.


Binding (or wrapping) code and data together into a single unit are known as encapsulation. For example, a capsule, it is wrapped with different medicines.

A java class is the example of encapsulation. Java bean is the fully encapsulated class because all the data members are private here.

Objective Type Questions

Page number-8

A. Tick the correct answer

1. Object


3. Method define for it

4. Property

5. Encapsulation

B. Fill in the blanks.

1. Properties



4. Polymorphism

5. Object

C.  State True or False

1. True

2. False

3. True

4. True

5. True

Very Short/Short Answer Questions


In object-oriented programming, inheritance is the mechanism of basing an object or class upon another object (prototype-based inheritance) or class (class-based inheritance), retaining similar implementation


There are 4 major principles that make an language Object Oriented. These are Encapsulation, Data Abstraction, Polymorphism and Inheritance. These are also called as four pillars of Object Oriented Programming


Long Answer Questions

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