en el = in/on the
Assuming that you are speaking spanish, "en el sur" would directly translate as "in the south".
The Spanish in the world
Queda en el museo means: (in Spanish) Is in the museum.
On the floor/In the background
In Spanish it means 'At bar'
In the work plan
Estoy en el 10 º grado or estoy en el décimo grado mean the same
"Love is in the air my affection."
Para el (sustantivo masculino en singular) --- For the (masc. noun, singular)
"Hay palabras en el libro" means "There are words in the book" in Spanish.
"Estamos en El Camino" means "We are on the road" or "We are on our way" in Spanish. It can also be interpreted as "We are on the path" depending on the context.
It means "My birthday is in the month of".