Kotlin Program — Part 2 MCQs with Explanations

A lambda is an expression that describes a function. But instead of declaring a named function, you declare a function that has no name is the correct answer to “What are lambdas in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

To perform pattern matching on an expression is the correct answer to “What is the purpose of the when expression in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

To apply a block of code to an object is the correct answer to “What is the purpose of the with function in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

To apply a block of code to an object and return the object is the correct answer to “What is the purpose of the apply function in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

FALSE is the correct answer to “Does Kotlin enable macros”. This question is standard in competitive examination syllabi for Kotlin Program.

To assign a default value to a nullable variable if null is the correct answer to “What is the purpose of the Elvis operator in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

To declare a variable that must be initialized before use is the correct answer to “What is the purpose of the lateinit keyword in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

It is an object-oriented programming language is the correct answer to “Which of the following is true about Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

More concise syntax is the correct answer to “What is the main advantage of using Kotlin over Java”. This question is standard in competitive examination syllabi for Kotlin Program.

True is the correct answer to “In Kotlin, it is possible to inherit class properties and functions from one class to another.”. This question is standard in competitive examination syllabi for Kotlin Program.

Extension functions is the correct answer to “Which of the following is a feature of Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

Kotlin uses the ? operator to denote nullability is the correct answer to “Which of the following is true about Kotlin's null safety”. This question is standard in competitive examination syllabi for Kotlin Program.

Kotlin's type system is more strict than Java's is the correct answer to “Which of the following is true about Kotlin's type system”. This question is standard in competitive examination syllabi for Kotlin Program.

It is similar to the switch statement in Java is the correct answer to “Which of the following is true about Kotlin's when expression”. This question is standard in competitive examination syllabi for Kotlin Program.

/* Comment */ is the correct answer to “How can we write a multi-line comment in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

To perform a null-check and execute code only if the value is not null is the correct answer to “What is the purpose of the let() function in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

FALSE is the correct answer to “In Kotlin, code statements must end with a semicolon (;)”. This question is standard in competitive examination syllabi for Kotlin Program.

They must implement the equals() and hashCode() methods is the correct answer to “Which of the following is true about Kotlin's data classes”. This question is standard in competitive examination syllabi for Kotlin Program.

To allow a function to be inlined at the call site is the correct answer to “What is the purpose of the inline keyword in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

final is the correct answer to “What is the default inheritance of classes in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

32 is the correct answer to “Identify the bits allocated in Kotlin for Float data type”. This question is standard in competitive examination syllabi for Kotlin Program.

TRUE is the correct answer to “The Kotlin code can be implemented without JVM”. This question is standard in competitive examination syllabi for Kotlin Program.

0 is the correct answer to “Array indexes start with:”. This question is standard in competitive examination syllabi for Kotlin Program.

Both Object-Oriented and Functional is the correct answer to “What paradigm(s) does the Kotlin programming language follow”. This question is standard in competitive examination syllabi for Kotlin Program.

val is the correct answer to “How do you define a variable in Kotlin that cannot be reassigned”. This question is standard in competitive examination syllabi for Kotlin Program.

To define a switch-case statement is the correct answer to “What is the when expression used in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

Null-safe member access is the correct answer to “What does ?. operator do in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

False is the correct answer to “The value of a string variable must be surrounded by single quotes.”. This question is standard in competitive examination syllabi for Kotlin Program.

public is the correct answer to “What is the default visibility modifier for functions in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

object is the correct answer to “Which keyword is used to create a singleton in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

To transform an object is the correct answer to “What is the main purpose of the let function in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

It makes a function available for overriding. is the correct answer to “What is the purpose of the open modifier in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

repeat is the correct answer to “Which Kotlin construct allows a block of code to be executed a specific number of times”. This question is standard in competitive examination syllabi for Kotlin Program.

Both A and B is the correct answer to “Which keywords are used to handle conditional statements in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

To terminate a function execution and return a value is the correct answer to “In Kotlin, what is the main purpose of the return keyword”. This question is standard in competitive examination syllabi for Kotlin Program.

To establish a scope in which an object's properties and functions can be accessed directly without specifying the object's name is the correct answer to “What is the primary use of the with function in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

until loop is the correct answer to “Which of these is not a loop structure in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

Through both abstract classes and interfaces is the correct answer to “What methods can be used to achieve abstraction in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

String is the correct answer to “Which of the following is not a basic data type in Kotlin”. This question is standard in competitive examination syllabi for Kotlin Program.

length is the correct answer to “Which property can be used to find the length of a string”. This question is standard in competitive examination syllabi for Kotlin Program.