wrote:
Hi I need to get remove a sink and am not to sure on how to cap the
pipes off. The supply lines are copper pipes. I know there are caps for
them but if i put the cap on and solder it will it be stong enough to
not blow off from the pressure of the water?

Not a problem.

As to the drain is there a
cap that I can use that will keep sewer gas from getting in to the room?

Test plug -- looks like a big rubber cork with a wing nut sticking off
one end. $3.00. For a sink drain, you probably want a 1-1/4" plug.