6.According to the learned counsel for the appellants, a new plea of pure question of law can be raised for the first time in the Second Appeal. When a Suit is dismissed under Order IX Rule 9 CPC, it will operate as res-judicata and there can be no escape from the position that the application is clearly barred by the principle. A subsequent Suit cannot be filed by the legal-heirs of the plaintiff through whom the Suit was dismissed, as they are precluded by law from putting forward such a case. If it is permitted, then the provision will have no value and the bar imposed could be rendered meaningless. Further, when a question of law is raised for the first time in a Court of Law, upon the construction of a document or upon facts of either or proved beyond controversy, it is not only competent but expedite in the interest of justice to entertain the plea. Therefore, by the very same admission made in the plaint that there was a Suit filed by Muthulakshmi withdrawing the plaint in O.S.No.95/1999 for declaration and injunction and the factum that it was dismissed for default due to her illness is also admitted and the averments that the plaintiff stepped into the shoes of Muthulakshmi and filed the second Suit, as pleaded, it amounts to categorical admission that the first suit in O.S.No.95/1999 was dismissed for default under Order IX Rule 9 CPC and therefore, the bar of filing a fresh Suit will operate.