Kotlin MCQs with answers Page - 16

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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A

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Q. Which function returns a portion of a list?

  • (A) part()
  • (B) slice()
  • (C) take()
  • (D) split()

A

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Q. Which function gets the first element matching a condition?

  • (A) findFirst()
  • (B) matchFirst()
  • (C) firstOrNull()
  • (D) first()

A

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Q. How do you repeat a string 3 times in Kotlin?

  • (A) "Kotlin" * 3
  • (B) repeat("Kotlin", 3)
  • (C) repeat(3) { "Kotlin" }
  • (D) "Kotlin".repeat(3)

A

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Q. What is the use of the `takeIf()` function?

  • (A) Always returns true
  • (B) Returns the object if condition is true, else null
  • (C) Takes the first element of a list
  • (D) Returns false if condition is false

A

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Q. Which function returns the number of items in a collection?

  • (A) length()
  • (B) count()
  • (C) total()
  • (D) size()

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Q. Which of the following can be used to filter a list?

  • (A) where()
  • (B) select()
  • (C) filter()
  • (D) cut()

A

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Q. Which scope function uses 'this' as the receiver and returns the result of lambda?

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

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Q. What will be the output of `println(listOf(1,2,3).contains(2))`?

  • (A) false
  • (B) true
  • (C) 2
  • (D) 1

A

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Q. Which function checks if any elements match a condition?

  • (A) some()
  • (B) exists()
  • (C) any()
  • (D) matchAny()

A

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Q. Which keyword prevents further subclassing in Kotlin?

  • (A) final
  • (B) sealed
  • (C) abstract
  • (D) closed

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