You Do Need power plug adapter while traveling from Mozambique to Iceland.

Here is Why You Need An Adapter

The outlet and plug type used in Iceland are C and F and in Mozambique are C, F and M. This is how they look like.

Mozambique

In Mozambique, outlets of type C, F and M are in use.

Type C

Type F

Type M

Iceland

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

Type C

Type F