(i) and (iv ) of section 100(11)(d) of the Act provide for two distinct grounds the former for the case of improper acceptance of any nomination, and the latter for that of non compliance with the provisions of the Constitution or of the Act, or of any rules or orders made under the Act; (2) when the candidate appears to be properly qualified on the face of the electoral roll and the nomination paper and no objection is raised to the nomination, the acceptance of the said nomination by the Returning Officer must be deemed to be proper acceptance ; (3) even if there is a proper acceptance, it is open to the petitioner to question the validity of the election under section 100(1)(d)(iv) on other grounds, namely, that the candidate whose nomination was accepted was not qualified at all or could not be deemed to be duly nominated as a candidate for the reason that he did not comply with the provisions of section 33(3) of the Act; and (4) if the second ground in substance is not taken in the petition substance is more important than form the Tribunal has no power after the prescribed period of limitation for the filing 305 of the petition to allow an amendment introducing the second ground.