1.Difference between shallow copy and deep copy

2.What is advantage of categories What is difference between implementing a category and inheritance

3.Difference between categories and extensions

4.Difference between protocol in objective c and interfaces in java

5.What are KVO and KVC

6.What is purpose of delegates

7.What are mutable and immutable types in Objective C

8.When we call objective c is runtime language what does it mean

9.what is difference between NSNotification and protocol

10.What is push notification

11.Polymorphism

12.Singleton

13.What is responder chain

14.Difference between frame and bounds

15.Difference between method and selector

16.Is there any garbage collection mechanism in Objective C.

17.NSOperation queue

18.What is lazy loading

19.Can we use two tableview controllers on one viewcontroller

20.Can we use one tableview with two different datasources How you will achieve this

21.What is advantage of using RESTful webservices

22.When to use NSMutableArray and when to use NSArray

23.What is the difference between REST and SOAP

24.Give us example of what are delegate methods and what are data source methods of uitableview.

25.How many autorelease you can create in your application Is there any limit

26.If we don’t create any autorelease pool in our application then is there any autorelease pool already provided to us

27.When you will create an autorelease pool in your application

28.When retain count increase

29.Difference between copy and assign in objective c

30.What are commonly used NSObject class methods

31.What is convenience constructor

32.How to design universal application in Xcode

33.What is keyword atomic in Objective C

34.What are UIView animations

35.How can you store data in iPhone applications

36.What is coredata

37.What is NSManagedObject model

38.What is NSManagedobjectContext

39.What is predicate

40.What kind of persistence store we can use with coredata