Dear aspirant,

For IISER 2025, high weightage topics include atomic structure, chemical bonding, Thermodynamics, equilibrium, and coordination compounds in chemistry . In physics - Laws of motion, Thermodynamics, Optics, and modern Physics . In biology - Genetics, Cell biology, and human Physiology . And Calculas, algebra, Coordinate Geometry in mathematics.

For more details please visit this link given below.

https://engineering.careers360.com/articles/iiser-syllabus-exam-pattern