You Do Need power plug adapter while traveling from Guyana to Qatar.

Here is Why You Need An Adapter

The outlet and plug type used in Qatar is G and in Guyana are A, B, D and G. This is how they look like.

Guyana

In Guyana, outlets of type A, B, D and G are in use.

Type A

Type B

Type D

Type G

Qatar

In Qatar, outlets of type G are in use.

Type G