Where is it?
Doko desu ka
Who is it?
Dare desu ka, Donata (more polite)
Which (>= three) is it?
Dore desu ka
Which (of two) is it?
Dochira desu ka
What is it?
Nan desu ka
When is it?
Itsu desu ka
How many are there/ How old are you?
Ikutsu desu ka
How much is it?
Ikura desu ka
How is it?
Doo desu ka
What kind of
Donna
How about
Doo
Why
Dooshite, Naze