There are a few ways to ask questions in L'ewa. They correlate to the different kinds of things that the speaker could want to know.
ma is the particle used to fill in a missing/unknown noun phrase. Consider
ma blanu? what is blue?
ro qa madsa ma? you are eating what?
no is the particle used to fill in a missing/unknown verb. Consider these
ro no? How are you doing?
le wufra xi no? The dog did what?
so is the particle used to ask questions about numbers, similar to the "how
many" construct in English.
ro madsa so spalo? You ate how many apples?
le so zasko xi qa'te glowa How many plants grow quickly?