(20 1 1? Zhuzhou simulation) The right picture shows the transformation relationship between some substances (reaction conditions and some products have been omitted), in which A and E are solid oxide

(20 1 1? Zhuzhou simulation) The right picture shows the transformation relationship between some substances (reaction conditions and some products have been omitted), in which A and E are solid oxides and A. (1) According to the fact that B and D are colorless liquids composed of the same elements, it can be inferred that B is hydrogen peroxide, D is water, and A appears before and after the reaction, so it can be judged that A acts as a catalyst here, which is also in line with the conditions of hydrogen peroxide decomposition, so C is oxygen;

(2) According to the fact that F is a yellow solution, it can be inferred that F is a ferric chloride solution, so E is iron oxide, so reaction ③ is a reaction of iron oxide and hydrochloric acid; According to the solution of (1), C is oxygen, D is water and E is iron oxide, so it can be judged that X is iron, and reaction ④ is that iron oxide reacts with toxic gas Y to generate iron, so it can be judged that toxic gas Y is carbon monoxide;

(3) Because iron is easy to rust in humid air, to keep the surface of iron products dry, a protective layer can be coated on the surface of iron products if necessary, such as painting, oiling and metal plating.

(4)D is water and Z is carbon dioxide. Organic matter is obtained through a certain reaction. According to the knowledge of biology, we can know that the reaction is the photosynthesis of plants. So the answer to this question is: (1) catalysis;

(2)③fe2o3+6hcl═2fecl3+3h2o； ④3CO+Fe2O3？ High temperature? . ? 2Fe+3co 2；

(3) Oil painting (reasonable answer);

(4) photosynthesis.