Yes, it is.
avunu
No, it is not.
kAdu
How do you make a question a sentence?
Add a capital A at the end.
e.g.
adi kukkA?
Is it a dog?
who (human)
evaru
who (non-human)
EmiTi
which
Edi
where
ekkaDa
who (human, oblique) & whose
evari
who (non-human, oblique)
dEni
who (non-human, plural)
vETi