You Do Need power plug adapter while traveling from Tajikistan to Canada.

Here is Why You Need An Adapter

The outlet and plug type used in Canada are A and B and in Tajikistan are C and F. This is how they look like.

Tajikistan

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

Type C

Type F

Canada

In Canada, outlets of type A and B are in use.

Type A

Type B