Hello Dear,

You can choose any of the BTech Courses like Computer Science, Electronics and communication, Mechanical or Civil. These are the pure Engineering branch with no connection with Biology. So these are the fields where you can do good in life.  A good level of maths and physics both will be required as these subjects form the basis of many engineering courses. Basics and advanced calculus, statistics, linear algebra are just a few of the major topics in mathematics that you need to study thoroughly.

Good Luck