Control Structures in Ruby MCQ question and answer with solution

1

What is the keyword used to define a conditional statement in Ruby?

A) case B) while C) for D) if

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Answer & Solution

Answer: Option D

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2

Which of the following loops in Ruby is executed at least once?

A) while B) until C) for D) do...while

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Answer & Solution

Answer: Option D

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3

In Ruby, what does the unless keyword do?

A) Executes code if condition is true B) Executes code if condition is false C) Breaks out of loop if condition is true D) Executes code only once if condition is true

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Answer & Solution

Answer: Option B

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4

What is the purpose of the case statement in Ruby?

A) To define a class B) To handle multiple conditions with one expression C) To declare a variable D) To perform mathematical calculations

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Answer & Solution

Answer: Option B

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5

Which loop in Ruby allows you to iterate over a collection of elements?

A) while B) for C) until D) each

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Answer & Solution

Answer: Option D

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6

What is the result of the expression 5 > 3 ? "Yes" : "No" in Ruby?

A) Yes B) No C) 5 D) 3

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Answer & Solution

Answer: Option A

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7

What does the break keyword do in a loop in Ruby?

A) Continues to the next iteration of the loop B) Exits the loop C) Skips the current iteration of the loop D) Resets the loop counter to 0

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Answer & Solution

Answer: Option B

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8

Which of the following is NOT a comparison operator in Ruby?

A) <=> B) === C) ==~ D) ><

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Answer & Solution

Answer: Option D

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9

What is the purpose of the redo keyword in Ruby?

A) Repeats the current iteration of the loop B) Exits the loop C) Skips the current iteration of the loop D) Restarts the loop from the beginning

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Answer & Solution

Answer: Option A

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10

What is the output of the following code snippet?

x = 10
unless x > 15
  puts "Hello"
end

A) Hello B) No output C) Error D) nil

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Answer & Solution

Answer: Option A

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Control Structures in Ruby MCQ question and answer with solution | Ruby Programming MCQs