Kotlin Programming MCQ for Competitive Exams, Interviews, and Certifications

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Each section contains 100 MCQs on Kotlin Program .

What are lambdas in Kotlin?

A) A lambda is a Data Type in Kotlin B) A lambda is a Class type in Kotlin C) A lambda is an Interface in Kotlin D) A lambda is an expression that describes a function. But instead of declaring a named function, you declare a function that has no name

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Answer & Solution

Answer: Option D

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

What is the purpose of the when expression in Kotlin?

A) To replace if-else statements B) To perform pattern matching on an expression C) To loop over a collection of elements D) To perform arithmetic operations

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Answer & Solution

Answer: Option B

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

What is the purpose of the with function in Kotlin?

A) To perform a null-safe call on an object B) To apply a block of code to an object C) To filter a collection of objects based on a condition D) To map a collection of objects to a different type

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Answer & Solution

Answer: Option B

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

What is the purpose of the apply function in Kotlin?

A) To perform a null-safe call on an object B) To apply a block of code to an object and return the object C) To filter a collection of objects D) To map a collection of objects to a different type

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Answer & Solution

Answer: Option B

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

Does Kotlin enable macros?

A) TRUE B) FALSE

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Answer & Solution

Answer: Option B

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

What is the purpose of the Elvis operator in Kotlin?

A) To assign a default value to a nullable variable if null B) To assign a default value to a non-nullable variable if null C) To concatenate two strings D) To perform arithmetic operations

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Answer & Solution

Answer: Option A

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

What is the purpose of the lateinit keyword in Kotlin?

A) To declare a variable that can be null B) To declare a variable that must be initialized before use C) To declare a variable that is initialized lazily D) To declare a variable that can be re-assigned

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Answer & Solution

Answer: Option B

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

Which of the following is true about Kotlin?

A) It is a functional programming language B) It is an object-oriented programming language C) It is a procedural programming language D) It is a scripting language

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Answer & Solution

Answer: Option B

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

What is the main advantage of using Kotlin over Java?

A) Better performance B) Better memory management C) More concise syntax D) Better support for multi-threading

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Answer & Solution

Answer: Option C

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

In Kotlin, it is possible to inherit class properties and functions from one class to another.

A) False B) True

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Answer & Solution

Answer: Option B

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

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