Kotlin MCQ test
Check your Kotlin knowledge with a free online quiz. Each attempt picks 15 multiple-choice questions at random, from fresher to experienced level, and shows your score with the right answer and an explanation for every question.
15 random Kotlin questions · no time limit
A new mix every attempt. You see your score and every explanation at the end.
What this Kotlin test covers
- Null safety
- Data classes and sealed classes
- Coroutines, scopes and suspend functions
- Flows
- Extension functions and collections
Want to read first? See all Kotlin interview questions and answers.