You Do Need power plug adapter while traveling from Argentina to India.

Here is Why You Need An Adapter

The outlet and plug type used in India are C, D and M and in Argentina are C and I. This is how they look like.

Argentina

In Argentina, outlets of type C and I are in use.

Type C

Type I

India

In India, outlets of type C, D and M are in use.

Type C

Type D

Type M