初三化学酸碱盐单元测试题以及答案(Test questions and answers of chemistry, acid-base and salt units

初三化学酸碱盐单元测试题以及答案（Test questions and answers of chemistry, acid-base and salt units in junior middle school）This article is contributed by guylovejane

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Third, chemical acid-base salt unit test questions and answers, third, chemical acid-base salt unit test questions and answers

A choice (the following questions only to meet the requirements of a answer, each of 1 points, a total of 15 points) 1. for the rational use of resources, "" garbage "to promote garbage classification recycling, life waste iron, aluminum cans to be classified as a class (A.) recovery, they belong to the organic B. inorganic salt C. metal or alloy D. 2. alkali insoluble iron nails at the following four kinds of environment, easy to rust (A.) is placed in the humid air drying in the air on B. C. immersed in boiling water in oil immersed in D. 3. NaCl, BaCl2, Na2CO3 used to identify three kinds of reagents, a colorless solution is (A.) B. C. lime water dilute sulfuric acid hydrochloric acid D. silver nitrate solution 4. - some food approximate pH as follows: grape 3.5 - 4.5, 2.9 - 3.3, apple, cattle Milk 6.3, - 6.6, egg white 7.6 - 8. The following statement is wrong (A.) hyperacidity people should not eat more acidic than apple B. Apple Juice Grape Juice strong C. egg is a basic food D. Grape Juice can make the purple litmus blue 5. the following products have not been sealed, open after a period of time, the quality of the concurrent increase in biochemistry

the reaction is the concentrated hydrochloric acid and caustic carbonate (4) the significant contribution of concentrated sulfuric acid lime A. B. of the C. D. and the 6. China famous chemist Mr. Hou te Pang () is made of black powder was invented by A. B. to create the hydrometallurgy of soda ash production improved C. D. found 7. of the existing elements Ba (NO3) 2: the solution, KCI solution, the K2SO4 solution, the CuSO4 solution, without other reagents, through the experimental method of them will distinguish, identification Out of order

(A.) may be the description of the B. and the C. D. 4 1 4 8 of

8 in the 8. to Fe, Cu containing a beaker with excess sulfuric acid, solute in solution (a) the addition of excess zinc powder mixed solution of A.1 B.2 C 3 D 4 9.CuCI2 and MgCl2, after full reaction, filtration, filter paper material (A.Zn) is B.Cu C.Zn and Cu D.Cu and Mg 10. does not meet the acid and salt reaction of another acid and another salt "(A.) is the reaction of hydrochloric acid and sodium nitrate solution of dilute sulfuric acid and B. barium chloride solution

C. dilute hydrochloric acid and colored wastewater

D. silver nitrate solution of nitric acid and calcium carbonate factory emissions 11. by the determination of PH=2 for wastewater treatment, the wastewater should be adjusted to PH = 7 ~ 8, for this purpose, and the economical and feasible method, adding this wastewater (A.) lime B. sodium hydroxide C. iron D. HCl 12. iron ore (containing Fe203) as raw material of iron, carbon monoxide (A.) oxidation reduction agent B. containing Fe3+ agent C. catalyst D. 13. fuel a solution of Mg2+, S042-, NO3-, Fe3+, Mg2+, the number of S042- is 3:3: 1, that Fe3+ in solution the number of N03-, S042-, B.1:2:1 C.3:1:15 (A.3:2:1) is more than 14. D.3:1:13 respectively, take a small amount of material