You Do Need power plug adapter while traveling from Cocos (Keeling) Islands to Iraq.

Here is Why You Need An Adapter

The outlet and plug type used in Iraq are C, D and G and in Cocos (Keeling) Islands is I. This is how they look like.

Cocos (Keeling) Islands

In Cocos (Keeling) Islands, outlets of type I are in use.

Type I

Iraq

In Iraq, outlets of type C, D and G are in use.

Type C

Type D

Type G