Kotlin MCQs with answers Page - 13

Here, you will find a collection of MCQ questions on Kotlin. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which function is used to iterate over a list in Kotlin?

  • (A) loop()
  • (B) each()
  • (C) forEach()
  • (D) iterate()

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Q. Which class is used for lazy initialization in Kotlin?

  • (A) Lazy<T>
  • (B) Deferred<T>
  • (C) Delay<T>
  • (D) Postpone<T>

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Q. Which type represents a value that never returns in Kotlin?

  • (A) Unit
  • (B) Nothing
  • (C) Null
  • (D) Void

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Q. What is the keyword used to create an anonymous function in Kotlin?

  • (A) anonymous
  • (B) lambda
  • (C) fun
  • (D) def

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Q. Which of the following keywords is used to declare an interface in Kotlin?

  • (A) interface
  • (B) trait
  • (C) implements
  • (D) protocol

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Q. Which type in Kotlin can represent both a value and absence of value?

  • (A) Any
  • (B) Nothing
  • (C) Unit
  • (D) String?

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Q. Which function is used to convert an integer to a string in Kotlin?

  • (A) toStr()
  • (B) toText()
  • (C) toString()
  • (D) asString()

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Q. How do you define a function that accepts a lambda in Kotlin?

  • (A) fun test(lambda: function)
  • (B) fun test(lambda: () -> Unit)
  • (C) fun test(lambda: () => Void)
  • (D) fun test(lambda: lambda)

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Q. Which function returns a random element from a list in Kotlin?

  • (A) pick()
  • (B) choose()
  • (C) random()
  • (D) select()

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Q. Which operator is used to combine two collections?

  • (A) +
  • (B) &
  • (C) ++
  • (D) concat

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