Question

1. Why Is Sky
Blue ?
Explain it .

Answer 1

Because of Scattering.. When the Sun is high in the sky, this is why the entire sky is blue. It appears a brighter blue the farther away from the Sun you look, because there's more atmosphere to see (and therefore more blue light) in those directions

Answer 2

sky is not blue
but
sky is black
because when sun rise then we see blue sky
in reality sky is black not blue