The following are multiple choice questions (with answers) about medical knowledge.   **Question:** ZnPO4 setting time is 4-7 min. All of the following methods are employed to prolong its setting time except:   (A) Addition of drop of distilled water   (B) Prolong spatulation time   (C) Small increment of addition of powder to liquid   (D) Mixing on cooled glass slab
['(A) Addition of drop of distilled water <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Addition of drop of distilled water \n (B) Prolong spatulation time \n (C) Small increment of addition of powder to liquid \n (D) Mixing on cooled glass slab <> possible answers', '  ZnPO4 setting time is 4-7 min. All of the following methods are employed to prolong its setting time except: <> context@']