Section 11. Vacancy in Board not to invalidate acts or proceedings

11. Vacancy in Board not to invalidate acts or proceedings.— No act or proceeding of a Board or any committee thereof shall be called in question on the ground merely of the existence of any vacancy in, or any defect in the constitution of, the Board or such committee, as the case may be. 2 [11A. Delegation of powers to Chairman.— The Chairman of a Board shall exercise such powers and perform such duties as may be prescribed or as may, from time to time, be delegated to him by the Board.]