1. Where is this country?
2. What is this country?
3. What country is this?
4. What country is it?
Answer: The country is Russia.
[What is the suitable question for the answer?]
The answer doesn't tell where Russia is. It tells what the mystery country is, not where it is. Two, three, and four are appropriate. Number one is not. The answer to question number one would be to locate the country in Asia and Europe.
The suitable question for the answer "Russia" could be any of the following:
1. Where is Russia located?
2. What country does Russia refer to?
3. Which country am I referring to?
4. Can you tell me the name of the country that I am referring to?