yes but not likely
There is a theory that it might, but nobody really knows.
No, black holes are actually invisible because it can suck it Light as well, so no light can escape from the black hole.
Black holes. They can be so large that they can suck up universes at a time
yes
Yes, all black holes 'suck stuff up'.
Yes
Yes.
Since whit holes only exist mathematically, a black hole could not pull in a white hole.
A black hole could potentially disrupt the orbits of objects in the Oort Cloud through its gravitational pull, but it is unlikely to "suck in" the entire cloud. The vast distance of the Oort Cloud from any known black holes reduces the probability of such an event occurring.
White holes are theoretical regions of spacetime that expel matter and energy outward, the opposite of black holes which pull matter in. They do not suck up objects like black holes do. However, there is no observational evidence for the existence of white holes in the universe.
A black hole will engulf an entire planet, if it gets close. I don't see how it could engulf just the volcano, separately from the planet.
Black holes were stars that were so massive that they collapsed on itself. The gravity in black holes is infinite and more you get closer to it, more time gets slower. Black holes suck all matter that is too close. Even light can't escape Black holes.