Is there any presumption as to genuineness of certified copies under Indian Evidence Act, 1872? If yes, then under which section?       

As per S. 79. Presumption as to genuineness of certified copies. –– The Court shall presume to be genuine every document purporting to be a certificate, certified copy or other document, which is by Law declared to be admissible as evidence of any particular fact and which purports to be duly certified by any officer of the Central Government or of a State Government, or by any officer in the State of Jammu and Kashmir who is duly authorized thereto by the Central Government.