hi,

see apart from iiser, iits, niser some of the other institute in india offers integrated msc course in different discipline, institutions have their own entrance test,

The Birla Institute of Technology and Science (BITS) - msc integrated course in biological sciences, chemistry, physics and mathematics., bits entrance test.

The University of Hyderabad -integrated M.Sc. course in physics.

The Cochin University of Science and Technology (CUSAT) -M.Sc. course in photonics

Amrita School of Arts and Science, Amritapuri- M.Sc. course in physics and mathematics