Stars are the basic building blocks of our universe and understanding their origin is one of the most interesting and fundamental problems of modern astrophysics. Stars mostly form together in some sort of ensemble of clusters and associations, imprinted with the fractal structure of the giant molecular clouds (GMCs) from which they are born. These young star clusters (YSCs, age<10 Myrs) which are still embedded in the parent molecular cloud are often dominated with bright massive star/s and the high-energy UV radiation from them ionize nearby hydrogen gas clouds, thus creating emission nebulae which, are usually termed as H ii regions and, are highly visible tracers of the active star formation. Thus, YSCs and H II regions constitute the nearest laboratories for the direct astronomical investigation of the physical processes of star formation and early evolution.  In this thesis, We did a multiwavelength investigation of star formation in H II regions S305, and S301. The contributions, important findings of this thesis work along with future prospects will be discussed in this talk.