hey,

to apply for M.Sc chemistry (merit) in delhi university is candidate must have done B.Sc (hons) from delhi university only with at least 2 papers of mathematics and  with a 60 percent marks in aggregate or grade equivalent.

for MS.c chemistry (entrance) in delhi university candidate must have done their B.Sc programme/B.Sc general from delhi university or with any university recognised as equivalent to delhi univeristy and candidate must have passed 10+2 recognised by the university of delhi with  mathematics as one of the regular subjects and B.S.c (genl.)/B.Sc (prog.)/B.Sc pass examination with atleast 2 papers of mathematics and a aggregate of 50 percent marks or grade equivalent.

hope this helps!