Kotlin Programming MCQ for Competitive Exams, Interviews, and Certifications

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Each section contains 100 MCQs on Kotlin Program .

What is a sealed class in Kotlin?

A) A class that is used to represent data structures B) A class that is used to create instances of a class C) A class that is used to store constants D) A class that is used to define a closed set of subclasses

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What defines a sealed class in Kotlin?

A) Its another name for an abstract class B) It represents restricted class hierarchies C) It is used in every Kotlin program D) None of above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What is a data class in Kotlin?

A) A class that is used to represent data structures B) A class that is used to perform database operations C) A class that is used to store constants D) A class that is used to handle exceptions

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is a lambda in Kotlin?

A) A function that is passed as an argument to another function B) A class that is used to represent data structures C) A type of variable in Kotlin D) A keyword used to define classes

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

How do you call a function in Kotlin?

A) functionName() B) call functionName C) Function -> functionName D) functionName

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the Elvis operator in Kotlin?

A) A binary operator used to perform mathematical operations B) An operator used to compare two values C) An operator used to check for null values D) An operator used to perform type conversion

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which version of Android Studio has the Kotlin plugin bundled in?

A) version 2.1 B) version 2.5 C) version 2.3 D) None of these

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What about Java Interoperability?

A) Kotlin can quickly call the Java code, while Java cannot access the code written in Kotlin. B) While Kotlin executes on JVM, it cannot interoperate with Java. C) Kotlin offers a compatibility layer for Java interoperability which comes with some runtime costs. D) Kotlin can quickly call the Java code and vice versa.

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What is a nested class in Kotlin?

A) A class that is defined within another class B) A class that is defined within a function C) A class that is defined within a package D) A class that is defined outside of any other class or function

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What does the also function do in Kotlin?

A) It's a scoping function that also executes a block of code B) It runs a block of code and returns the object it was called on C) It runs a block of code and returns the result D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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