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有关原子量:H;1 O:16 N:14 K:39Na:23 Al:27 Fe:56 Zn:65 Cu:64第Ⅰ卷(选择题,共83分)一、选择题(15分,每小题3分,每小题只有1个选项符合题意)1.在相同条件下,以下列物质为燃料对环境污染程度最小的是(A)液化气 (B)煤油 (C)低硫煤 (D)木柴2.据最新报导,放射性同位素_(67)~(166)HO 可有效地治疗肝癌,该同位素原子核内的中子数与电子数之差为(A)32 (B)67 (C)99 (D)1663.分别将下列各组物质等体积混合,在室温下激烈振荡,静置后,能形成均匀水溶液的是(A)四氯化碳溴水 (B)甲醇甲苯(C)甘油水 (D)乙酸乙酯碳酸钠溶液4.下列四组物质间的反应,其中与其它三个有本
About atomic weight: H; 1 O: 16 N: 14 K: 39Na: 23 Al: 27 Fe: 56 Zn: 65 Cu: 64 Volume I (multiple choices, a total of 83 points) A. Multiple-choice questions (15 points, each small Question 3 points, only 1 option per question corresponds to the intended meaning.) 1. Under the same conditions, the following substances as fuel for the least environmental pollution is (A) LPG (B) kerosene (C) low-sulfur coal ( D) Firewood 2. According to the latest report, the radioactive isotope _(67)~(166)HO can effectively treat liver cancer. The difference between the number of neutrons and the number of electrons in the isotope nuclei is (A)32 (B)67 (C). 99 (D) 1663. Mix each of the following groups of substances in equal volumes and vigorously oscillate at room temperature. After standing, the homogeneous aqueous solution can be formed. (A) Carbon tetrachloride bromine water (B) Methyl toluene (C) Glycerin Water (D) Ethyl Acetate Sodium Carbonate Solution 4. Reactions between the following four groups of substances, among which there are three other