You Do Need power plug adapter while traveling from Uruguay to Chad.

Here is Why You Need An Adapter

The outlet and plug type used in Chad are C, D, E and F and in Uruguay are C, F and L. This is how they look like.

Uruguay

In Uruguay, outlets of type C, F and L are in use.

Type C

Type F

Type L

Chad

In Chad, outlets of type C, D, E and F are in use.

Type C

Type D

Type E

Type F