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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.

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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 8 of 15

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Q71.
Which among the following is not a use of object?

a.

Defining a member function

b.

Accessing data members

c.

Creating instance of a class

d.

Using class members

Discuss
Answer: (a).Defining a member function
Q72.
Which object can be used to access the standard input?

a.

System.inner

b.

cin

c.

System.stdin

d.

console.input

Discuss
Answer: (b).cin
Q73.
A single object can be used __________________

a.

As only two class types at a time

b.

As only three class types at a time

c.

As only one class type at a time

d.

As of as many class types as required

Discuss
Answer: (c).As only one class type at a time
Q74.
If same object name is given to different objects of different class then _____________

a.

Its compile time error

b.

Its runtime error

c.

It’s not an error

d.

Program suns smooth

Discuss
Answer: (a).Its compile time error
Q75.
Which among the following best describes abstract classes?

a.

If a class has more than one virtual function, it’s abstract class

b.

If a class have only one pure virtual function, it’s abstract class

c.

If a class has at least one pure virtual function, it’s abstract class

d.

If a class has all the pure virtual functions only, then it’s abstract class

Discuss
Answer: (c).If a class has at least one pure virtual function, it’s abstract class
Q76.
Can abstract class have main() function defined inside it?

a.

Yes, depending on return type of main()

b.

Yes, always

c.

No, main must not be defined inside abstract class

d.

No, because main() is not abstract function

Discuss
Answer: (b).Yes, always
Q77.
If there is an abstract method in a class then, ________________

a.

Class must be abstract class

b.

Class may or may not be abstract class

c.

Class is generic

d.

Class must be public

Discuss
Answer: (a).Class must be abstract class
Q78.
If a class is extending/inheriting another abstract class having abstract method, then _______________________

a.

Either implementation of method or making class abstract is mandatory

b.

Implementation of the method in derived class is mandatory

c.

Making the derived class also abstract is mandatory

d.

It’s not mandatory to implement the abstract method of parent class

Discuss
Answer: (a).Either implementation of method or making class abstract is mandatory
Q79.
Abstract class A has 4 virtual functions. Abstract class B defines only 2 of those member functions as it extends class A. Class C extends class B and implements the other two member functions of class A. Choose the correct option below.

a.

Program won’t run as all the methods are not defined by B

b.

Program won’t run as C is not inheriting A directly

c.

Program won’t run as multiple inheritance is used

d.

Program runs correctly

Discuss
Answer: (d).Program runs correctly
Q80.
Abstract classes can ____________________ instances.

a.

Never have

b.

Always have

c.

Have array of

d.

Have pointer of

Discuss
Answer: (a).Never have
Page 8 of 15

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