Hello Muskan

CUCET 2019 will be conducted in the online mode for the different undergraduate and postgraduate programmes offered by the participating universities.
To start your preparation for the exam, you should know about the detailed syllabus and exam pattern.
Go through the link below and check the detailed syllabus-
https://cucetexam.in/Document/Syllabus_PGQP21.pdf

You should focus on understanding the topics as rote learning does not help much in Chemistry. Questions will be based on Understanding of concepts which you have learned in your Bachelor's degree course.

Also, I can provide the model question paper of CUCET M.Sc Chemistry. Go through the link below to download-

https://university.careers360.com/download/sample-papers/cucet-msc-chemistry-model-question-paper

Hope this helps.
Good Luck!