Kotlin MCQs with answers Page - 5

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. What will 'val x = 5 / 2' evaluate to in Kotlin?

  • (A) 2.5
  • (B) 2
  • (C) 2.0
  • (D) 5

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Q. Which keyword is used to define constants in Kotlin?

  • (A) const
  • (B) final
  • (C) static
  • (D) constant

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Q. How do you define a read-only property in Kotlin?

  • (A) val propertyName
  • (B) var propertyName
  • (C) readonly propertyName
  • (D) immutable propertyName

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Q. Which function in Kotlin is used to transform a collection?

  • (A) transform()
  • (B) convert()
  • (C) map()
  • (D) update()

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Q. What is the default return type of a Kotlin function if none is specified?

  • (A) Int
  • (B) Any
  • (C) Unit
  • (D) void

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Q. Which keyword is used to create a coroutine in Kotlin?

  • (A) launch
  • (B) start
  • (C) begin
  • (D) run

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Q. Which Kotlin scope function returns the result of the last expression?

  • (A) apply
  • (B) also
  • (C) let
  • (D) run

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Q. What does the 'by lazy' delegate do in Kotlin?

  • (A) Initializes a value immediately
  • (B) Initializes a value when accessed for the first time
  • (C) Prevents initialization
  • (D) Initializes in a loop

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Q. Which keyword is used to delegate behavior in Kotlin?

  • (A) delegate
  • (B) by
  • (C) with
  • (D) to

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Q. What is the main benefit of using Kotlin over Java?

  • (A) No compilation required
  • (B) Better syntax for C++
  • (C) Null safety and conciseness
  • (D) Slower execution

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