Dear aspirant,

People choose Law as an Optional subject in UPSC Civil Services examination because it is high scoring however those choosing IAS Law Optional should have its foundation of degree level.There is a over-emphasis on Constitutional & Administrative Law then the International Law in Paper 1.

Main responsibility of IT Department is to enforce various direct tax laws, most important among these being the Income-tax Act, 1961, to collect revenue for Government of India. ... Therefore Income Tax Department influences businesses, professionals, NGOs, income earning citizens, and local authorities among others.

Hope the answer is helpful. 

Good luck!