.net interview que

1. what is the native code in c# ?
2. types of native code ?
3. What is the difference between native code and just in compiler ?
4. What is the difference between CLR code and CTS ?
5. What is the difference between native code and MSIL(micro soft integrated language) ?
6.What is the meaning of .Net?
7. What is the meaning of GC?
8. What is the meaning of IDispose  ?
9. What is the meaning of Finalizer in C# ?
10.  What is the difference between IDispose  and Finalizer ?
11. Why you need CLR?
12. Why you need CTS ?
13. Why you need GC ?