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Control Flow interview questions

12 real Control Flow questions from the Kotlin bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.

1. What is when expression?

Junior
  1. A.the use of a conditional that yields a value directly, removing the need for a ternary operator
  2. B.a multi-branch construct that returns a value and can replace a chain of conditional checks
  3. C.a progression of values created with the dotted operator and commonly iterated in a loop
  4. D.the requirement that every possible case of a sealed type or enum be handled when the result is used
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3. Which statement is correct?

Junior
  1. A.when expression — the requirement that every possible case of a sealed type or enum be handled when the result is used
  2. B.when expression — a progression of values created with the dotted operator and commonly iterated in a loop
  3. C.when expression — the use of a conditional that yields a value directly, removing the need for a ternary operator
  4. D.when expression — a multi-branch construct that returns a value and can replace a chain of conditional checks
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4. What is Range?

Junior
  1. A.the use of a conditional that yields a value directly, removing the need for a ternary operator
  2. B.the requirement that every possible case of a sealed type or enum be handled when the result is used
  3. C.a progression of values created with the dotted operator and commonly iterated in a loop
  4. D.a multi-branch construct that returns a value and can replace a chain of conditional checks
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6. Which statement is correct?

Junior
  1. A.Range — the requirement that every possible case of a sealed type or enum be handled when the result is used
  2. B.Range — a progression of values created with the dotted operator and commonly iterated in a loop
  3. C.Range — the use of a conditional that yields a value directly, removing the need for a ternary operator
  4. D.Range — a multi-branch construct that returns a value and can replace a chain of conditional checks
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7. What is if as expression?

Junior
  1. A.a multi-branch construct that returns a value and can replace a chain of conditional checks
  2. B.the use of a conditional that yields a value directly, removing the need for a ternary operator
  3. C.a progression of values created with the dotted operator and commonly iterated in a loop
  4. D.the requirement that every possible case of a sealed type or enum be handled when the result is used
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9. Which statement is correct?

Junior
  1. A.if as expression — a multi-branch construct that returns a value and can replace a chain of conditional checks
  2. B.if as expression — the use of a conditional that yields a value directly, removing the need for a ternary operator
  3. C.if as expression — the requirement that every possible case of a sealed type or enum be handled when the result is used
  4. D.if as expression — a progression of values created with the dotted operator and commonly iterated in a loop
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10. What is Exhaustive branching?

Mid
  1. A.the use of a conditional that yields a value directly, removing the need for a ternary operator
  2. B.the requirement that every possible case of a sealed type or enum be handled when the result is used
  3. C.a multi-branch construct that returns a value and can replace a chain of conditional checks
  4. D.a progression of values created with the dotted operator and commonly iterated in a loop
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12. Which statement is correct?

Mid
  1. A.Exhaustive branching — a multi-branch construct that returns a value and can replace a chain of conditional checks
  2. B.Exhaustive branching — a progression of values created with the dotted operator and commonly iterated in a loop
  3. C.Exhaustive branching — the requirement that every possible case of a sealed type or enum be handled when the result is used
  4. D.Exhaustive branching — the use of a conditional that yields a value directly, removing the need for a ternary operator
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