It is not believed that any black dwarfs exist yet, as the universe is not old enough for a white dwarf to have cooled into one.
No a white dwarf is a small compact star.
A black dwarf does not burn anything. A black dwarf is the cooled remnant of a dead star.
No, a dead star is different from a black dwarf. A black dwarf is a type of stellar remnant, but not all stars become black dwarfs. When a star dies it will leave behind a white dwarf, a neutron star, or a black dwarf as a remnant depending on its mass. Given enough time a white dwarf will eventually cool to a black dwarf. The universe is not old enough for this cooling to have happened yet.
black dwarf
black dwarf
the steps in the life of a star is the yellow dwarf,red giant,white dwarf & the black dwarf.
When it turns into a black dwarf neutron star or black hole.
No. A brown dwarf is a star that has too low a mass to start nuclear fusion. A black dwarf is a former white dwarf, the remnant of a low to medium mass star that ran out of fuel in its core.
A black dwarf is not a a kind of object rather than an individual star.
No, it is a red dwarf
A star, after using all of it's fuel explodes. We call this a super nova, and after this the star will either become a black dwarf star (or maybe a white dwarf) or it will collapse in on its self creating a black hole.
A cooled white dwarf is a black dwarf. I think you are thinking of a neutron star which has nothing to do with a white dwarf.