tendering authority is alleged, the expert evaluation of a particular tender, particularly when it comes to technical evaluation, is not to be second-guessed by a writ court. Thus, in Jagdish Mandal v. State of Orissa, (2007) 14 SCC 517, this Court noted: “22. Judicial review of administrative action is intended to prevent arbitrariness, irrationality, unreasonableness, bias and mala fides. Its purpose is to check whether choice or decision is made “lawfully” and not to check whether choice or decision is “sound”. When the power of judicial review is invoked in matters relating to tenders or award of contracts, certain special features should be borne in mind. A contract is a commercial transaction. Evaluating tenders and awarding contracts are essentially commercial functions. Principles of equity and natural justice stay at a distance. If the decision relating to award of contract is bona fide and is in public interest, courts will not, in exercise of power of judicial review, interfere even if a procedural aberration or error in assessment or prejudice to a tenderer, is made out. The power of judicial review will not be permitted to be invoked to protect private interest