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一、选择题.1.下列各组物质里的两种物质接触时,在常温下不产生气体的是( ).A.铁和浓硫酸 B.铜和浓硝酸C.电石和水 D.莹石和浓硫酸.2.接触法制硫酸和氨氧化法制硝酸都要用到的设备是( ).A.合成塔 B.吸收塔C.氧化炉 D.沸腾炉.3.某无色透明的酸性溶液中,能共存的离子组是( ).
I. Multiple-choice questions 1. When the two substances in the following groups of substances are in contact with each other, no gas is generated at room temperature (). A. Iron and concentrated sulfuric acid B. Copper and concentrated nitric acid C. Calcium carbide and water D. Ying Stone and concentrated sulphuric acid. 2. Contacting method The equipment used to make nitric acid from sulphuric acid and ammoxidation is (). A. Synthetic tower B. Absorption tower C. Oxidation furnace D. Boiling furnace 3. In a colorless and transparent acidic solution The group of ions that can coexist is ().