1)What is meant by rendering?
2)What is meant by bounding box?
3)What is meant by protocols? 
4)Difference between synchronous and asynchronous task?
5)Difference between strong,weak, readonly and copy?
6)What are momento pattern in iOS?
7)What is meant by code coverage?
8)What are the design patterns in iOS
9)What's the difference between the frame and the bounds?
10 Latest version of iOS
11. Difference Between Objective-c and Swift
12.Tuples
13.Frame & Bounds
14.Core-data Flow
15.Technical word for memory Storage
16.Guard and if Let
17.Nsurlsession
18.Encodable,Decodable,Codable
19.Binding and unwrapping
20. Auto-layout Maximum value for Button
21. Enumeration
22.Closures
23.When Memory Leakage happen
24. Google Map Delegate
25. Extension