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

Here is Why You Need An Adapter

The outlet and plug type used in Cocos (Keeling) Islands is I and in Kazakhstan are C and F. This is how they look like.

Kazakhstan

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

Type C

Type F

Cocos (Keeling) Islands

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

Type I