Hey there

Do not think that salary is very high in computer science engineering see if you'll do computer engineering half heartedly then ofcourse you'll not be interested in your work. Most of the placements in computer engineering is in IT which has very low salary unless they find your true interest they will not increase your salary regularly or may fire you. So if you are interested in biochemical engineering do it you may go for further studies and who knows you may research something in this field.

Good luck