Dear Anurag,
The Institute of Chemical Technology, Mumbai admits students to its MSc. Chemistry programme on the basis of entrance examination. information about Required Eligibility is given below.

Eligibility criteria for the admission in M.Sc. (Chemistry) by papers, Full time 2-years
a) The candidates who have taken the post-H.S.C. 3-year degree course of Bachelor of Science with Chemistry as a major subject and Mathematics at H.S.C. level and passed the bachelor examination with at least 60% of the marks in aggregate of equivalent grade average. [55% for the backward class candidates only from Maharashtra State] are only eligible to apply.
b) The candidates must have cleared the bachelor’s examination in one sitting i.e. repeaters shall not be eligible for the admission.
c) The admissions will be done strictly on the basis of merit, based on the marks obtained in the qualifying entrance examination.

For more information you can check ICT Hand Book 2017-18 .
I hope it helps!