Best Ruby Test - 83+ MCQs: Ruby test: Evaluate Your Programming Skills with Ruby Questions and Answers

1. In Ruby, what symbol is used to define a comment that spans multiple lines?

/* */

2. What is Ruby primarily known for?

Web development

Data analysis

Artificial intelligence

Game development

3. Which method is used to convert a string to uppercase in Ruby?

to_upper

uppercase

upcase

convert_upper

4. In Ruby, what does 'attr_accessor' do?

It defines a class method

It creates getter and setter methods for class variables

It defines a class constant

It defines an instance method

5. What is the purpose of the 'module' keyword in Ruby?

To define a class

To create a loop

To encapsulate methods and constants

To print output

6. What is the purpose of the 'begin' and 'rescue' keywords in Ruby?

To define a new class

To handle exceptions and errors

To create an array

To define a loop

7. What is the Ruby convention for naming classes?

CamelCase

snake_case

kebab-case

PascalCase

8. Which Ruby data structure is similar to an array but allows you to associate values with keys?

Array

Hash

String

Symbol

9. What does the 'private' access modifier do in a Ruby class?

It makes a method accessible from anywhere

It restricts access to the method within the class

It allows access to the method only from subclasses

It defines a public method

10. What is the Ruby convention for naming variables?

CamelCase

snake_case

kebab-case

PascalCase

11. What is a 'Proc' in Ruby?

A built-in data type

A reserved keyword

A block of code that can be assigned to a variable

A way to create objects

12. Which Ruby data structure is similar to an array but can contain only unique values?

List

Hash

Set

Tuple

13. What is the Ruby equivalent of 'null' in some other programming languages?

undefined

nil

void

empty

14. What is the purpose of the '__FILE__' constant in Ruby?

To define a new file

To get the current file's name

To access a global variable

To create a new object

15. What is the purpose of the 'unless' keyword in Ruby?

To define a new class

To create a new object

To execute code when a condition is false

To raise an exception

16. What is the purpose of the 'attr_accessor' keyword in Ruby?

To define a class

To access class attributes

To create a new object

To define a method

17. What is the Ruby operator for exponentiation?

18. What does the 'super' keyword do in Ruby?

It defines a superclass for a class

It calls the superclass's implementation of the current method

It creates an instance of a class

It raises an exception

19. In Ruby, what is the 'yield' keyword used for in a method definition?

To define a class

To create a loop

To call a block passed to the method

To print output

20. In Ruby, what is the purpose of the 'require' keyword?

To define a method

To include external libraries or modules

To create a class

To loop through an array

Ruby MCQ Test 4