Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Priyanshu kumar Best Answer
https://youtu.be/FsdroLkgGdA go through this video
google drive link in the video description...
You get all notes of spectroscopy (physical,organic &inorganic)
hope this will helps....