The antimatter will annihilate an equal mass of matter in the star and both masses will turn into energy, most likely in the form of gamma rays. Unless you used an enormous amount of antimatter there would be no noticeable change in the star. A large enough amount could blast away the star's outer layers.
The Alternative Factor
Just the same as if normal matter falls in. The matter or antimatter will stay there, increasing the mass of the black hole (and making it more "hungry", i.e., making its gravity stronger).
what will happen if falls from a dam
The observable universe is almost entirely matter (as opposed to antimatter) so it's unlikely that a cloud of antimatter large enough to form a star could exist long enough to form a star anywhere near the solar system; it would be annihilated by collisions with neighboring normal matter. Ignoring that, though, yes, there would be differences. The ejecta of an antimatter supernova would be primarily antimatter, meaning that it would annihilate nearby normal matter and give off massive amounts of gamma radiation that would not be seen with a normal matter supernova.
They can DEFINITELY breathe antimatter
both will collide with each other and energy produced due to which blast happened
As far as we know, the mass of the black-hole and it's energy would increase.
Antimatter - band - was created in 1998.
Antimatter - album - was created in 1993.
No, antimatter does not possess negative mass. Antimatter has the same mass as regular matter, but opposite charge.
Antimatter was discovered in 1928 by Paul Dirac.
Antimatter was discovered in 1928 by Paul Dirac.