Yes, you can use it.
It's generally much better to use water base primer on drywall.
Yes, you can use Kilz over drywall. It is an undercoat, or primer.
Yes, you can use it....but what are you trying to do? The drywall primer is specifically designed to seal the drywall and make the surface uniform. You will not get any benefit from using it on top of a finish coat except for using it as a base coat for changing colors.
Yes it can. (but it's kind of expensive to use as primer ! )
Drywall primer. -It's denser than regular primer.
I use basic drywall primer over all of those.
There are several types of paint you can use depending on the result you would like to achieve and the area you are covering. Matt, eggshell, satin and gloss all can be used on drywall with different finishes.
Yes, but it's not as good as drywall primer, and will probably give less coverage.
You will use an oil base primer to prevent moisture from getting in.
NO! An exterior rated primer must be used. Plus, choose a primer that is recommended for the surface you plan on painting.
PVA is a better primer for new drywall. Do you need it, not really. Any good latex primer will do the job just as well. I guess it really just depends on what you expect your primer to do. Cheap primers will seal the drywall, but not much more. I find bonding primers and pva primers will provide a much more solid platform for topcoats. They may cost more and be a little overkill, but they will provide you with layer of primer that will allow your topcoat to dry in even. You can also dry a high build primer, which is the product I prefer to use. They give you a great platform to work from, and since they are usually about 3 mils thicker that standard primer, they fill in a lost of voids in your wall. If you go with this kind of primer, it is best to spray it. You really can't achieve the mil build up you need from a brush and roller application. If you use the roller application, and are worried about really sealing the wall and filling voids, I would recommend two coats of primer.