Is the angle of refraction greater or lower than the angle of incidence when it goes from air to glass ?

What change occurs in the angle of refraction with the increase in the angle of incidence when a ray enters a medium ?

Are the angle of incidence , angle of refraction and the normal at the point of incidence on the same plane ?

What happens while it goes from glass to air ?

What speciality is observed in the value of ratio of sine of the angle of incidence to the sine of the angle of refraction, sin I / sin r ?