sir, my rank in IIT JEE is 669...will chemical in bombay be a good branch?? what are its scopes and pay package scales??

yes IIT B is a good option

scopes and pay package scales depend on your performance during degree but one thing is sure you wont be restricted and will be able to excel in any field as you want like reserach in india foreign uni, jobs core /non core.

some of the high paid jobs are also begged by chem engineers