Sure, I can try to help. What specific doubts do you have?

Young’s modulus is defined as the ratio of stress to strain within the elastic limit of a material. It indicates how stiff a material is. The higher the modulus, the stiffer the material.

Depends on what stuff you took in your courses and what subjects you liked. For instant majors like Accounts, Audit, Costing, Taxation will have scope in CA CS . Finance and Marketing will give you opprtunities in banks and corporates. If you prefer Government jobs go for banking exams.