there is some issue with your registration process of application for OAuth.Today i just registered an application and on doing back it added another application OAuth key ,please correct this.Also there is no option to delete OAuth created(I cannot see if it is please help show me the path).

Also there is no option to delete OAuth

Correct. Don't worry about multiple keys for now.

Today i just registered an application and on doing back it added another application OAuth key

Do you mean you accidentally double-posted when creating an app key?

For now, don't worry about multiple keys. There will be an option to delete them in the near future.

Nope.I was creating a key,after creatation i clicked on my registration URL(link on registration app name) and pressed back,for my surprise,one more key was generated.