the use of quantifiers in question "is/are there..?"

Dear all,

I am not quite sure about the uses of quantifiers like some, several, a few, a little, no in below sentences:
1/ Are there some students in your class?
2/ Are there several students in your class?
3/ Are there a few students in your class?
4/ Is there a little lemon juice in the jug?
5/ Is there no lemon juice in the jug?

Is there anything wrong with these sentences?

Thank you very much

mionguyen