Practice high-yield Programming & Software Development MCQs on Modules And Mixins In Ruby with worked academic solutions for FPSC, PPSC, NTS, NITB, PTS.
Questions
18
Difficulty Level
Exam-Level
Target Exams
FPSC, PPSC, NTS...
Estimated Time
22 mins
Exam-Level FPSC PPSC NTS NITB PTS
Verified for Commission Syllabus • Oct 14, 2026
18
Verified Practice Questions
Interactive test mode with detailed academic worked solutions
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Question 1 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is inheritance in Ruby?
Correct Answer: Option B — A mechanism by which a class can inherit properties and behaviors from another class
Detailed Academic Explanation:
A mechanism by which a class can inherit properties and behaviors from another class is the correct answer to “What is inheritance in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 2 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
Which keyword is used to define a private method in Ruby?
Correct Answer: Option D — private
Detailed Academic Explanation:
private is the correct answer to “Which keyword is used to define a private method in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 3 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What does polymorphism allow in Ruby?
Correct Answer: Option A — Objects of different classes to be treated as objects of a common superclass
Detailed Academic Explanation:
Objects of different classes to be treated as objects of a common superclass is the correct answer to “What does polymorphism allow in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 4 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In Ruby, which keyword is used to refer to the current instance of a class?
Correct Answer: Option C — self
Detailed Academic Explanation:
self is the correct answer to “In Ruby, which keyword is used to refer to the current instance of a class”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 5 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is encapsulation in Ruby?
Correct Answer: Option B — The bundling of data with the methods that operate on that data
Detailed Academic Explanation:
The bundling of data with the methods that operate on that data is the correct answer to “What is encapsulation in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 6 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the purpose of polymorphism in Ruby?
Correct Answer: Option C — It allows objects of different classes to be treated as objects of a common superclass
Detailed Academic Explanation:
It allows objects of different classes to be treated as objects of a common superclass is the correct answer to “What is the purpose of polymorphism in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 7 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What does the attr_accessor method do in Ruby classes?
Correct Answer: Option D — Defines both reader and writer methods for class attributes
Detailed Academic Explanation:
Defines both reader and writer methods for class attributes is the correct answer to “What does the attr_accessor method do in Ruby classes”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 8 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the main purpose of using inheritance in Ruby?
Correct Answer: Option A — To promote code reusability and reduce redundancy
Detailed Academic Explanation:
To promote code reusability and reduce redundancy is the correct answer to “What is the main purpose of using inheritance in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 9 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the main advantage of using polymorphism in Ruby?
Correct Answer: Option C — It allows for more flexible and reusable code
Detailed Academic Explanation:
It allows for more flexible and reusable code is the correct answer to “What is the main advantage of using polymorphism in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 10 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What does the term "inheritance" refer to in Ruby?
Correct Answer: Option C — A mechanism by which a class can inherit properties and behaviors from another class
Detailed Academic Explanation:
A mechanism by which a class can inherit properties and behaviors from another class is the correct answer to “What does the term "inheritance" refer to in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 11 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In Ruby, what is the purpose of the super keyword?
Correct Answer: Option A — Calls the same method in the superclass
Detailed Academic Explanation:
Calls the same method in the superclass is the correct answer to “In Ruby, what is the purpose of the super keyword”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 12 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the main purpose of a constructor in a Ruby class?
Correct Answer: Option D — To initialize instance variables
Detailed Academic Explanation:
To initialize instance variables is the correct answer to “What is the main purpose of a constructor in a Ruby class”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 13 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
In Ruby, what is encapsulation?
Correct Answer: Option C — Binding data with methods that operate on that data
Detailed Academic Explanation:
Binding data with methods that operate on that data is the correct answer to “In Ruby, what is encapsulation”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 14 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the primary goal of using polymorphism in Ruby?
Correct Answer: Option B — To allow for more flexible and reusable code
Detailed Academic Explanation:
To allow for more flexible and reusable code is the correct answer to “What is the primary goal of using polymorphism in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 15 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the primary benefit of using inheritance in Ruby?
Correct Answer: Option A — It promotes code reusability and reduces redundancy
Detailed Academic Explanation:
It promotes code reusability and reduces redundancy is the correct answer to “What is the primary benefit of using inheritance in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 16 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What is the main advantage of using encapsulation in Ruby?
Correct Answer: Option C — It hides the internal state of an object and restricts access to it
Detailed Academic Explanation:
It hides the internal state of an object and restricts access to it is the correct answer to “What is the main advantage of using encapsulation in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 17 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What does the term "polymorphism" mean in Ruby?
Correct Answer: Option B — The ability for objects of different classes to be treated as objects of a common superclass
Detailed Academic Explanation:
The ability for objects of different classes to be treated as objects of a common superclass is the correct answer to “What does the term "polymorphism" mean in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
Question 18 of 18
★ FPSC
★ PPSC
★ FPSC
★ PPSC
What does the include keyword do in Ruby?
Correct Answer: Option C — Mixes in methods from a module into a class
Detailed Academic Explanation:
Mixes in methods from a module into a class is the correct answer to “What does the include keyword do in Ruby”. This question is standard in competitive examination syllabi for Modules And Mixins In Ruby.
💡Key Conceptual Anchor:Modules And Mixins In Ruby
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💡Examiner's Advisory for Programming & Software Development
In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.