Question

how is the Indian sub-continent separated from the rest of Asia

Answer 1

Through Himalayas It is separated from China and all,,,,,

..
.Through Indian ocean and various relief features it's separated from rest of asia

Answer 2

heya!!!
here's your answer.
The Himalayan Mountains separate the subcontinent from the rest of Asia. While it is a distinct landmass, the Indian subcontinent is not large enough to be considered a continent. The Indian subcontinent is part of a tectonic plate that has been moving for more than 200 million years.
hope this helps you!!