Our sun is not enough to become a black hole. But if it were, and it collapsed, would the Earth be draw into it?

If there were no atmosphere, Earth would have been

If the sun were suddenly replaced by a block hole of one solar mass, what would happen to the earth's orbit immediately after the replacement ?

What would have happened if there were no air on the earth?

Let the sun contracts due to self-gravity and it becomes a black hole. If the mass of sun is 2 x 10^30 kg, then possible radius of sun to behave as a black hole is

Let the sun contracts due to self-gravity and it becomes a black hole. If the mass of sun is 2× 10^30 kg, then possible radius of sun to behave as a black hole is

if the universe were shrunk to the size, of earth, how large would the earth be on this scale?

Number of possible black holes in our galaxy is

Number of possible black holes in our galaxy is