Objective-C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Objective-C Interview Questions

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Explain what is protocol in objective-c?

What is toll-free bridging?

Explain what is @synthesize in objective-c?

Is objective c, a dynamic language? True/false, explain.

What is kvc and kvo? Give an example of using kvc to set value.

Does a thread created using performselectorinbackground:withobject: creates its own autorelease pool?

Can we create dynamic classes in objective c? If yes, explain how to create with a valid use case?

Who calls dealloc method?

What is responder chain?

What can’t we put into an array or dictionary?

Can I write some c++ function in same .m file?

Can we create dynamic classes in objective c?

What happen if we send any message to an object which is released?

Explain the difference between atomic and nonatomic synthesized properties.

How does dispatch_once manages to run only once?

Un-Answered Questions { Objective-C }

What is the difference between c and objective c?

Why is objective c used?

Can I use objective c in swift?

What does __ block do?

What is difference between nil and nill?

What is the difference between weak and unowned?

Is objective c dynamically typed?

Distinguish between @synthesize and @dynamic in objective –c?

What is property in objective c?

What are the different types of identifiers?

How do you add a category in objective c?

Is objective c type safe?

What is objective c runtime?

Can a static library (.a) contain resources like images, sound files etc?

What is difference between mutable and immutable?

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