The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Bismuth Oxide incorporated in MTA results in grey discolouration of crown. In newer material this Bismuth Oxide is replaced with?   (A) Terbium-Dysisopropium   (B) Tantalam Oxide   (C) Bismuth Carbonate   (D) Titanium Oxide
['(B) Tantalam Oxide <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Terbium-Dysisopropium \n (B) Tantalam Oxide \n (C) Bismuth Carbonate \n (D) Titanium Oxide <> possible answers', '  Bismuth Oxide incorporated in MTA results in grey discolouration of crown. In newer material this Bismuth Oxide is replaced with? <> context@']