What is Kotlin primarily used for?

• Web Development
• Android Development
• Game Development
• Embedded Systems

Which keyword is used to declare a read-only variable in Kotlin?

• var
• val
• let
• const

Which IDE is officially recommended for Kotlin development?

• Eclipse
• IntelliJ IDEA
• NetBeans
• Visual Studio

Which symbol is used to indicate a nullable type in Kotlin?

• !
• ?
• *
• &

Which statement is used as a replacement for switch in Kotlin?

• case
• when
• choose
• select

Which Kotlin collection function transforms each element?

• map
• filter
• reduce
• fold

Which keyword makes a class inheritable?

• extend
• open
• public
• super

Which function removes null values from a collection?

• filterNulls()
• removeNull()
• filterNotNull()
• compact()

What is the purpose of data classes in Kotlin?

• Hold state only
• Hold data and provide equals/hashCode/toString automatically
• Create immutable classes
• Provide UI components

Which keyword is used to override a method?

• over
• override
• extends
• open

Which keyword is used to declare a coroutine function?

• async
• suspend
• launch
• defer

Which coroutine builder returns a result?

• launch
• async
• runBlocking
• withContext

Which Kotlin feature allows creating mini-languages?

• DSL
• KTX
• Coroutines
• Reflection

Which function is used to change coroutine context?

• switchContext
• withContext
• changeDispatcher
• contextSwitch

Which operator is used for type-safe builders in Kotlin?

• invoke
• builder
• lambda
• receiver