Princely states which joined Pakistan were
(a)Swat
(b)Khairpur
(c)Bahawalpur
(d)Chitral
(e)Hunza
(f)Nagar
(g)Amb
(h)Phulra
(i)Dir
(j)Kharan
(k)Kharan
and
Baluchistan (Khanate of Kalat)
The Khanate of Kalat was an autonomous region and had gained independence from British Empire long before the rest of India.
Princely states which joined India were
(a)Baroda
(b)Hyderabad
(c)Jammu and Kashmir
(d)Mysore
(e)Gwalior
(f)Sikkim