Hy Chandi!!

Yes, Saint Xaviers college , kolkata is a very good option for BSC chemistry honors. It is placed on the 4th position in the list of best colleges for bsc in India, Loyola college being the first. 

Talking about the placements part Saint Xaviers is extremely good at it very big companies like Google etc come in this college for recruiting the students. But to avail the benefit of placements one must be good at communication skills and other requirements of the company. Self preparation is very necessary to get placement in a good company.

I hope your query is solved now.

If you still have any doubts you can contact anytime.

Good luck for your future!!