Asking about frequency
HOW OFTEN?
Asking about choice
WHICH?
Asking about ownership
WHOSE?
Asking about time, occasion, moment
WHEN?
Asking for a reason, explanation
WHY?
Ask about person
WHO?
Asking about quantity and used with countable nouns
HOW MANY?
Asking for a specific thing, object
WHAT?
Asking in or what place or position
WHERE?
Asking about quantity or price and used with uncountable nouns
HOW MUCH?
Used for asking for a way, manner, form
HOW?