Basically in first semester , what you had studied in previous classes has been taught so you don’t need that much specific books but for 2nd semester , to score good in semester exams , just go through what you have been taught by teachers i.e, their notes and previous years papers .

It would be better if you contact some senior of yours in Jadavpur in CE branch and enquire yourself. As far as I know you can buy one of these : . Introduction to Chemical Engineering

Fluid Mechanics for Chemical Engineers

CHEMICAL ENGINEERING FOR GATE PB

You can also ask your professors for their suggestion as that would be the most helpful thing.