I like chemistry. what should I pursue MSc chem or chem engg?

It depends on your capability & interest & both are the different fields. If you like Chemistry then you can go for M.Sc Chemistry from any reputed institute. No doubt Chemical engineering is the best option but choose as per your interest.

Chemical engineering is a good career option. There are multiple chemical engineering job opportunities for the chemical engineers of India. You can get the jobs like chemical engineer in many industries, chemical research field, chemical manufacturer, chemical supplier, chemical designer, space fuel processor, uranium recycler, genetic pharmer, vertical agricultural engineer, nano manufacturer and simplicity expert etc.