Which of the 8 sentences are right? Thank you!
1.Could you tell me who he is?
2.Could you tell me who is he?
3.Could you tell me where it is?
4.Could you tell me where is it?
5.Please tell me who he is.
6.Please tell me who is he.
7.Please tell me where it is.
8.Please tell me where is it.

Question

Which of the 8 sentences are right? Thank you!
1.Could you tell me who he is?
2.Could you tell me who is he?
3.Could you tell me where it is?
4.Could you tell me where is it?
5.Please tell me who he is.
6.Please tell me who is he.
7.Please tell me where it is.
8.Please tell me where is it.

Answer

In perfect grammar, correct ones are 1, 3, 5 and 7. Though in common usage all are correct. You may use any of them and be perfectly understood and no one will point you out as wrong.