yes VB.NET ia an object oriented.

vb.net is object oriented concept.it is supports to 
inheritence but it donot support to multiple inheritance.

Vb.net supports all inheritance

1)single inheritance
It means Single class inheriting to single child classes
2)multiple inheritance
multiple classess inherits to single classes
3)Multilevel  Inheritance
Single class inherits to one class that class inheritd to 
single another class
4)Heirarichal inheritance 
Single class inherits to Multiple classes
5)Hybrid Inheritance
Single class inherits to different classess and that 
classes inherits to one class

With respect to Answer 3 of this Question.
I think following are still not clear-

4)Heirarichal inheritance 
Single class inherits to Multiple classes

This is not possible in .NET.
5)Hybrid Inheritance
Single class inherits to different classes and that class 
inherits to one class

It should be Single class inherits to different class (not,
classes) and that class inherits to one class

yes,vb.net is object oriented.
vb.net supports only
1)single level inheritance/simple inheritance
2) multi level inheritance
3)hierachical inheritance

vb.net doesn't supports
multiple,hybrid inheritance.

vb.net is not a object oriented. its a compiled language.

vb.net is not pure object oriented as compare C#.it is 
support inheritance concepts but not supports to multiple 
inheritance

Answer 4 & 5 is the correct one. Pls ignore all other answers.

vb.net is not a object oriented. its a compiled language.

- the most dumbest answer. Please don't give wrong answers 
when you are not sure. It will misguide the readers.

VB.Net is an Object Oriented Language.
It doesn't support multiple inheritance. For this purpose, 
interfaces are introduced. 
VB.Net supports multiple interfaces

hey hari,i have faced the interview Question what are 
interfaces?
  I answer Vb.net doesn't supports multiple inheritance,but 
it can be achieved in .net using interfaces. Interfaces are 
silmilar to class,that contain methods.
  but they do not provide any implementation for these 
methods. 

Then they asked WHY VB.NET DOESN't SUPPORTS MULTIPLE 
INHERITANCE??
If u know Can u plz answer!!!!!!!!!