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Basic Syntax In Ruby MCQs

Practice Basic Syntax In Ruby MCQs for competitive exams.

Basic Syntax In Ruby MCQs

Practice questions from this topic.

In Ruby, what is the keyword used to define a loop that repeats until a condition is true?

  1. A. until
  2. B. loop
  3. C. while
  4. D. repeat
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What is the output of the expression: "hello" + "world" in Ruby?

  1. A. helloworld
  2. B. hello world
  3. C. hello+world
  4. D. "hello" "world"
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Which method is used to find the length of an array in Ruby?

  1. A. .size
  2. B. .length
  3. C. .count
  4. D. .length_of
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What is the correct syntax for a multiline comment in Ruby?

  1. A. /* ... */
  2. B. // ... //
  3. C. ''' ... '''
  4. D. # ... #
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Which of the following is the correct way to define a range in Ruby?

  1. A. (1..10)
  2. B. [1 to 10]
  3. C. {1..10}
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In Ruby, what is the correct way to define a constant?

  1. A. constant_name = value
  2. B. constant name : value
  3. C. CONSTANT_NAME = value
  4. D. constant_name(value)
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What does the 'return' keyword do in Ruby methods?

  1. A. Exits the method with a value
  2. B. Prints to console
  3. C. Converts to integer
  4. D. Continues the loop
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Which method is used to convert a string to lowercase in Ruby?

  1. A. .to_lowercase
  2. B. .lower
  3. C. .downcase
  4. D. .lowercase
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What is the result of the expression: 10 / 3 in Ruby?

  1. A. 1
  2. B. 3.333
  3. C. 3
  4. D. 4
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Which operator is used for exponentiation in Ruby?

  1. A. **
  2. B. ^
  3. C. ^^
  4. D. //
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In Ruby, what does the 'if' statement evaluate?

  1. A. Expression
  2. B. Boolean value
  3. C. Integer
  4. D. String
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Which method is used to check if a string contains a specific substring in Ruby?

  1. A. .contains
  2. B. .exist
  3. C. .include?
  4. D. .hasSubstring
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