Any powers exercise by a company in pursuance of objectives not authorized by the Memorandum of Association is regarded as?

The correct answer is "ultra vires". When a company exercises powers beyond the scope of its authorized objectives as stated in the Memorandum of Association, it is acting "ultra vires" or beyond its legal authority. This means that any such action is not legally binding on the company or its stakeholders. Therefore, it is important for companies to strictly adhere to the provisions of their Memorandum of Association and ensure that all their actions are within the scope of their authorized objectives.