hello there

the salary of an individual depends upon the job title and the institution so nobody can tell you the exact figures .the salary for an aerospace engineer is good in india and you can expect 5-6 lacs per annum in india but for that you need to have a b.tech degree .but since you have mentioned you want to be a scientist or you want to go in the research area,you can expect 45-60k per month from any government firm .a professor is somewhat like a scientist so try looking for the job prospectus of a  professor in india also

best wishes