hi... I did M.Sc in Chemistry. Shold I join Ph.D. for better future?

PhD will always give you a better scope. But you have pay for it (in terms of time, work, money). Admission into PhD (the registration) will also take time & efforts. So weigh both and decide.

IT TOTALLY DEPENDS ON U WHETHER U WANT TO GO FOR RESEARCH OR FOR A JOB U CAN EASILY GO INTO CLINICAl RESEARCH JOB AND CAN EARN 30K PER MONTH AND AFTER PHD U CAN APPLY FOR SAME AND A PROF SO U KNOW YOURSELF BETTER THAN ANYONE .. BEST OF LUCK FOR UR FYTURE...