Welcome to the Objects and Classes in OOPs MCQs Page

Dive deep into the fascinating world of Objects and Classes in OOPs with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Objects and Classes in OOPs, a crucial aspect of Object Oriented Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Objects and Classes in OOPs, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Object Oriented Programming.

Check out the MCQs below to embark on an enriching journey through Objects and Classes in OOPs. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Objects and Classes in OOPs. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Objects and Classes in OOPs MCQs | Page 2 of 15

Explore more Topics under Object Oriented Programming

01

OOPs Concept and Features

02

Constructors and Destructors

03

Access Specifiers

04

Class Members

05

Member Functions

06

Inheritance and its Types

07

Exception Handling

08

Objects and Pointers

09

Memory Allocation and Variable Scope

10

Overloading

11

Inbuilt Classes

Q11.

It is necessary to return the object if it was passed by reference to a function.

Yes, since the object must be same in caller function

Yes, since the caller function needs to reflect the changes

No, the changes are made automatically

No, the changes are made explicitly

Discuss

Answer: (c).No, the changes are made automatically

Q12.

How many objects can be passed to a function simultaneously?

Only 1

Only an array

Only 1 or an array

As many as required

Discuss

Answer: (d).As many as required

Q13.

If an object is passed by address, will be constructor be called?

Yes, to allocate the memory

Yes, to initialize the members

No, values are copied

No, temporary object is created

Discuss

Answer: (c).No, values are copied

Q14.

Is it possible that an object of is passed to a function, and the function also have an object of same name?

No, Duplicate declaration is not allowed

No, 2 objects will be created

Yes, Scopes are different

Yes, life span is different

Discuss

Answer: (a).No, Duplicate declaration is not allowed

Q15.

Passing an object using copy constructor and pass by value are same.

True

False

May be

Can't say

Discuss

Answer: (b).False

Q16.

What is reference to an object?

It is address of an object

It is address of where the variables and methods of object are stored

It is pointer having address of an object

It is address of only variables and not the methods of an object

Discuss

Answer: (b).It is address of where the variables and methods of object are stored

Q17.

Whenever an object is assigned to a variable or passed to a method, ________________

Actually the objects aren’t used

Actually only the objects are used

Actually a pointer to an object is used

Actually copy of object is used

Discuss

Answer: (a).Actually the objects aren’t used

Q18.

Does use of object reference in assignment or passing means copy of the object is being used?

No, because the copy would create a new temporary variable

No, because the copy would not help to make changes to main object

Yes, because the reference directly means using address

Yes, because the reference directly means the constructors are involved

Discuss

Answer: (c).Yes, because the reference directly means using address

Q19.

What will be the output of the following code?

import java.awt.Point;
class Testing
{
 public static void main(String[] args)
 {
  Point p1,p2;
  p1=new Point(100,100);
  p2=p1;
  p1.x=200;
  p1.y=200;
  System.out.println(“Point 1: ” + p1.x + ”, “ + p1.y);
  System.out.println(“Point 2: ” + p2.x + ”, “ + p2.y);
 }
}

Point 1: 100, 100
Point 2: 200,200

Point 1: 200, 200
Point 2: 100,100

Point 1: 100, 100
Point 2: 100,100

Point 1: 200, 200
Point 2: 200,200

Discuss

Answer: (d).Point 1: 200, 200
Point 2: 200,200

Q20.

Is there any explicit use of pointers in java that would be applicable to objects?

Yes, we use reference for this purpose

Yes, we use java arrays for this purpose

No, implicit pointing is possible

No, direct class names should be used

Discuss

Answer: (c).No, implicit pointing is possible

Page 2 of 15

Welcome to the Objects and Classes in OOPs MCQs Page

Objects and Classes in OOPs MCQs | Page 2 of 15

Explore more Topics under Object Oriented Programming

OOPs Concept and Features

Constructors and Destructors

Access Specifiers

Class Members

Member Functions

Inheritance and its Types

Exception Handling

Objects and Pointers

Memory Allocation and Variable Scope

Overloading

Inbuilt Classes

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