Note: 1, the whole volume is divided into single-choice questions and multiple-choice questions, including mandatory questions and multiple-choice questions, ***65 questions, and candidates answer 60 questions, with a full score of 100.
2. Only one set of questions can be selected for the elective part (* * * * a total of 5 questions). If both sets of questions are answered, score according to the first set of questions.
3. Possible relative atomic mass: h:1c:12o:16n:14 Na: 23 Fe: 56 Ca: 40 Al: 27 Cu: 64 Zn: 65 Ba:16 Ba.
A, multiple-choice questions (this question ***30 small questions, each question 1 point, ***30 points; There is only one correct answer to each small question)
1. The following pollution phenomena are mainly related to SO2 (b b. acid rain).
A. ozone hole C. photochemical smog D. greenhouse effect
2, chemical formula and common name is ()
A. baking soda Na2CO3, caustic soda NaOH B. mirabilite Na2SO4? 10H2O, hydrated lime Ca(OH)2
C. sodium bicarbonate soda, limestone calcium carbonate, sodium hydroxide soda, salt sodium chloride.
3, iron and dilute sulfuric acid reaction to generate hydrogen, the following measures can't improve the hydrogen generation rate is ().
A. heating B. replacing dilute sulfuric acid with 98% concentrated sulfuric acid.
C, dropwise adding a small amount of CuSO4 solution D, and replacing the iron sheet with iron powder.
4, the following elements do not belong to the main family element is ()
A. manganese b, calcium c, phosphorus d, iodine
5. The following statement is true ()
A. the electron H: Cl B of hydrogen chloride. The molecular formula of methane is CH4.
The molecular formula of ethane is ch3ch3d. The structural abbreviation of ethylene is CH2CH2.
6, the following statement is correct ()
A. atomic radius: Al & gtSib. Stability: PH3 & gtH2S
C. acidity: H2SO4 >; Hclo4d。 Alkalinity: Al (OH) 3 >; sodium hydroxide
7. In the following statement, the correct one is ().
A. the chemical reaction must be exothermic.
A chemical reaction in which the total energy of reactants is less than that of products is exothermic.
The change of energy in chemical reaction has nothing to do with the quality of reactants.
D. Energy change is one of the basic characteristics of chemical reaction.
Protecting the environment is the responsibility of every citizen. Take the following measures: ① promote the use of phosphorus-free detergent; ② Municipal solid waste
Garbage sorting treatment; ③ Promote the use of disposable wooden chopsticks; ④ Promote the use of clean energy; (5) Excessive use of chemical fertilizers,
Pesticides; ⑥ Promote the use of fluorine-free refrigerators. Which is good for protecting the environment ()
A.①②④⑤b .②③④⑥c .①②④⑥d .③④⑤⑥
9, suffering from goiter is a common endemic disease in remote mountainous areas, the following elements have a therapeutic effect on the disease is ().
A. ferric sodium chloride iodide
10, prepare100 ml1.0 mol/lna2c03 solution. The following operation is correct ().
A. Weigh 10.6 g anhydrous sodium carbonate, add it into a 100 mL volumetric flask, add water to dissolve and fix the volume.
B. Weigh 10.6 g anhydrous sodium carbonate, add 100 mL distilled water, and stir to dissolve.
C. When transferring Na2CO3 solution, directly pour it into the volumetric flask without glass rod drainage.
D, after constant volume, plug the cork, repeatedly inverted, shake well.
1 1, Na2SO4, NaCl, (NH4)2SO4 and NH4Cl can be distinguished by only one reagent. This test
The agent is ()
A. silver nitrate, sodium hydroxide, barium barium chloride
12, the following compounds can not be directly combined by simple substance is ().
A.FeCl2 B.HF C.Fe3O4 D.CuCl2
13, what measures do you think can be taken to reduce acid rain is ().
① Use less coal; ② Raise the chimney of the factory; ③ Desulfurization of fuel; ④ Add lime into the acidified soil; ⑤ Develop.
new energy
A.①②③ B.②③④⑤ C.①③⑤ D.①③④⑤
14, the following gases contain the most atoms ().
A.7.5g C2H6B.14g N2 C.7g Carbon monoxide D.24g Oxygen.
15. The volumetric flask shall be marked with () of the following six items.
① Temperature ② Concentration ③ Capacity ④ Pressure ⑤ Calibration Line ⑤ Acidity or alkalinity.
A.①③⑤b .③⑤⑥c .①②④d .②④⑥
16, the extractant was selected to extract iodine from iodine water. This extractant should have the property of ().
A. Insoluble in water, it must easily react with iodine. Insoluble in water, iodine is more soluble than water.
C. Insoluble in water, with higher density than water.
17, selenium is an essential trace element for human body. The following statement about harmony is true ().
A and isotope b, both selenium, contain 34 neutrons.
C is different from the number of extranuclear electrons with 44 and 46 protons respectively.
18. For the A2+3b2ab3 reaction, the following expression with the fastest reaction rate is ().
C.d. can't judge
19, a group of mixtures that can be separated by a separatory funnel is ().
A. benzene and water B. ethyl acetate and acetic acid C. bromoethane and ethanol D. ethanol and water
20, the following statement about concentrated sulfuric acid and dilute sulfuric acid is correct ().
A. Both can be used as desiccants. B. Both of them have certain oxidizability.
C. it can react with copper when heated. It can be stored in an iron container at room temperature.
2 1, in the following reactions, the colors of the products are red, reddish brown, light yellow and blue ().
① Sodium metal burns in pure oxygen; (2) drop NaOH solution into ②FeSO4 solution and leave it in the air for a period of time;
③ dropping KSCN solution into ③FeCl3 _ 3 solution; ④ Anhydrous copper sulfate is put into medical alcohol.
A.②③①④ B.③②①④ C.③①②④ D.①②③④
22, made of copper-zinc alloy fake gold ingot deceptive events occur frequently, the following methods are not easy to distinguish its authenticity ().
A. measure the density B. put it in nitric acid C. put it in hydrochloric acid D. observe the appearance
23, the following sodium compounds and their properties or uses do not conform to the ().
A.Na2O 2- light yellow solid, which can be used as bleaching agent b. Na2O- white solid, with unstable properties.
C.na2co 3- is stable and can treat hyperacidity. D. nah co 3- is easy to decompose when heated and can be used as baking powder.
24.CH3CO 18OH and CH3CO 16OH react with H-O-C2H5 respectively to generate H2O.
Quality ()
A. the former is big B. the former is small C. it is equal to D. uncertainty
25, judging from the valence of sulfur, sulfur in the following substances can't show oxidation is ().
A. sodium sulfide, boron thiocyanate, sulfur dioxide and sulfuric acid
26, the following reaction, belongs to the addition reaction is ().
A. ethylene discolors acidic potassium permanganate solution.
B. Drop benzene into bromine water, and the water layer is almost colorless after oscillation.
C. ethylene will discolor bromine water.
D, mixing methane and chlorine, and the yellow-green color disappears after illumination for a period of time.
27. With the accelerated pace of people's life, convenient small package food has been widely accepted. In order to prolong the shelf life of food,
In order to prevent food from oxidative deterioration, the chemical that can be put into the packaging bag is ()
A. anhydrous copper sulfate B. ferrous sulfate C. salt D. quicklime
28, the following solution, and 200 mL 0.5 mol/L Na2SO4 solution contains the same amount of Na+ substance concentration is ().
A. 200ml of 0.25ml/l sodium chloride solution B. 200ml 1 mol/l sodium chloride solution.
C. 100 ml of 0.5 mol/l sodium hydroxide solution D. 100 ml of 2 mol/l sodium hydroxide solution.
29. Under normal temperature and pressure, take the following four kinds of organic matter 1mol and burn them under the condition of sufficient oxygen, respectively, with the largest oxygen consumption.
Yes ()
A.C2 H5 ohb . CH4 c . C2 H4 od . c3h8o 2
30, the following substances react with water will release oxygen is ()
A.Na2O B.K C.Na2O2 D.NO2
Second, the single choice question 2 (* * * 25 small questions, each small question has only one option that meets the meaning of the question, and each small question has 2 points; Among them, 15 is required, and 10 is required; Each candidate chooses 5 questions from multiple-choice questions; 40 points for each candidate)
The following questions need to be answered:
3 1, the following comparison about the properties of Na2CO3 and NaHCO3 is correct ().
A. Dilute hydrochloric acid is dropped into a solution with the same concentration, and the gas release rate is Na2CO3.
B. Thermal stability Na2CO3
C. water-soluble Na2CO3
D. Relative molecular weight Na2CO3
32, in a colorless and transparent acidic solution can produce a large number of * * * is a group of ions ().
A. ammonium ion, aluminum ion, sulfate ion, nitrate ion, potassium ion, sodium ion, nitrate ion and sulfate ion
C potassium ion, manganese sulfate ion, ammonium ion, nitrate ion, sodium ion, potassium ion, bicarbonate ion and nitrate ion.
33, in the following solution, excess through CO2, the original solution has been kept clear is ().
A. sodium silicate solution B. barium chloride solution C. lime water D. bleaching powder solution
34. Use10ml of 0. 1 mol? L- 1BaCl2 solution can completely convert sulfate ions in three solutions of ferric sulfate, zinc sulfate and potassium sulfate with the same volume into barium sulfate precipitation, so the ratio of the dosage and concentration of the three sulfate solutions is ().
a . 3:2:2 b . 1:2:3 c . 1:3:3d . 3: 1: 1
35, according to the following reaction to judge the reducibility of related substances from strong to weak order is ()
h2so 3+I2+H2O = 2HI+h2so 4 2 FeCl 3+2HI = 2 FeCl 2+2 HCl+I2
3 FeCl 2+4hno 3 = 2 FeCl 3+NO ↑+ 2h2o+Fe(NO3)3
A. potassium bisulfate > iodine-> iron ion > nitric oxide.
C.Fe2+> I-> h2so 3 > NO D . NO > Fe2+> h2so 3 > I-
36, ethylene under certain conditions can react with the following substances is ()
(1) water, hydrogen, bromine, ethylene, hydrogen chloride and acidic potassium permanganate.
A. All B.235C. 1356D.23566
37, X, Y, Z, W four main group elements, if: the cation of X has the same electronic shell structure as the anion of Y;
The oxidation of W cation with the same charge number is greater than that of X cation. When the number of charges is equal, the anion radius of z is greater than y.
Anion radius, the order of atomic numbers of four elements from big to small is ()
A.Z & gtX & gtY & gtW B . W & gtX & gtY & gtz C X & gt； Z & gtY & gtW D . Z & gtY & gtX & gtW
38. The reaction of making Cl2 in the laboratory is 4HCl (concentrated)10mno2mncl2+c12 =+2h2o. The following statement is wrong.
Yes ()
A. the reducing agent is HCl and the oxidizing agent is Mn02.
B, for every generation of 1 mole of Cl2, the amount of substances that transfer electrons is 2 moles.
C. for every 1 molMnO2 MnO2 consumed, HCl as reducing agent consumes 4mol.
D. The generated Cl2 contains HCl impurities besides some water vapor.
39, let NA stand for avogadlow constant, the following statement is correct ().
A. The number of electrons transferred by the reaction of A.5.6 grams of iron with sufficient hydrochloric acid is 0.3 Na.
B Under normal temperature and pressure, the number of hydrogen atoms in 1 1.2L methane is 2NA.
C under standard conditions, the number of atoms in 22.4 L helium and 22.4 L fluorine gas is 2 NA.
D at room temperature, 2.7g aluminum reacts with enough hydrochloric acid, and the number of electrons lost is 0.3NA.
40, the following reaction ionic equation is written correctly ().
A. the reaction of magnesium hydroxide with dilute sulfuric acid H++OH? = H2O
B the reaction between sodium and water Na+2H2O = Na++2 OH? + H2↑
C. Calcium carbonate is soluble in acetic acid CaCO3+2h+= Ca2+CO2 =+H2O.
D. Absorb a small amount of carbon dioxide 2OH with sodium hydroxide solution? +CO2=CO32-+H2O
The nuclear charges of 4 1, X and Y are A and B, respectively, and their ions Xn+ and Ym- are extranuclear electron configuration phases.
Same, then the correct one of the following relationships is ()
a . a = b+m+n b . a = b-m+n c . a = b+m-n d . a = b-m-n
42. Is the product of the reaction between iron wire and oxygen or water vapor * *?
A.FeO B. Fe3O4 C. Fe2O3 D. Fe2O3 and Fe3O4
43. Hydrogen-oxygen fuel cells have been used in the space shuttle. When using a battery with 30% KOH solution as the electrolyte solution,
The electrode reaction is as follows:
2h2+4oh-4e-= 4h2o2+2h2o+4e-= 4oh-Judging from this, the following statement is correct ().
A.O2 in the anode, oxidation reaction.
B. The total reaction during power supply is 2h2+O2 = 2h2o.
C. the hydrogen-oxygen fuel cell converts electric energy into chemical energy.
The energy conversion rate of the fuel cell can reach 100%.
44. The M electron shell of X atom has two electrons; The m electron shell of y atom is less than the l electron shell by 1 electron; Then x and y
The chemical formula of the compound formed by combination is ()
A.XY2 B.XY3 C.XY D.X2Y
45. Under the condition of constant temperature, the following reactions occur in a closed container: 2SO2 (g)+O2 (g) 2SO3 (g),
The following statement can show that the reaction has reached an equilibrium state ()
A.SO2, O2 and SO3 are stored in container * * * B, and the concentrations of SO2 and SO3 are equal.
C. The ratio of SO2, O2 and SO3 in the container is 2:1:2 d. The pressure in the reaction container does not change with time.
Select the following questions (each candidate chooses a set of questions to answer):
46-50 small questions: corresponding to the content of "chemistry and life" module; Item 5 1-55: corresponding to the content of chemistry and technology module.
Select group a (chemistry and life)
46, the following substances, ① K2SO4; 2 formaldehyde; ③na2so 4； (4) mercury nitrate; ⑤NH4Cl； 6. Potassium hydroxide can make
Protein's degeneration is ().
A.②④⑥ B.①③⑤ C.①②③ D.④⑤⑥
47, the following statement is correct ()
A. Green food refers to food with green color.
B. white pollution refers to the pollution of white waste.
C. Organic food refers to food containing organic matter.
D. The essence of iodizing salt is to add KIO3 to salt.
48. The following statement that a reasonable diet is good for health is correct: ()
A. People who lack vitamin C should eat more animal livers. B.the purer the drinking water, the better.
C. Develop good eating habits and eat more alkaline foods such as vegetables and fruits.
D. The more flavoring agents and nutrients are added, the better.
49, the following statement, the correct is ()
① The acid that can undergo esterification must be carboxylic acid ② The alcohol obtained after oil hydrolysis is glycerol ③ Natural protein water.
The final products of hydrolysis are various α -amino acids. ④ Starch, cellulose and oil are all high molecular compounds. ⑤ protein solubility.
After adding K2SO4 solution to the solution, protein precipitates out of the solution, which is called denaturation.
A.③ B. ③④ C.②③ D.①⑤
50, health care doctor tips: people with hyperacidity should eat less apples, then the PH value of apple juice ()
A. more than 7 b equals 7 c and less than 7 d cannot be judged.
Select group b (chemistry and technology)
5 1. Three electrolytic cells containing molten potassium chloride, magnesium chloride and aluminum chloride are connected in series and electrified under certain conditions.
After a period of time, the ratio of the amount of substances that precipitate potassium, magnesium and aluminum is ()
a . 1:2:3 b . 3:2: 1 c . 6:3: 1d . 6:3:2
52, the following does not conform to the direction of today's chemical research is ()
A. Discovering new substances B. Synthesizing new materials
C. study the microscopic process of chemical reaction D. study the conservation relationship of atoms in chemical reaction
53. The chemical equation that can correctly express the following reaction is ()
A. Pyrite calcination: 2FeS2+5O2 FeO+4SO2.
B. melting with limestone in time: SiO _ 2+Cao casio _ 3.
C. Catalytic oxidation of ammonia: 4NH3+5O2 4NO+6H2O.
D the reaction between chlorine and lime milk: 2cl2+2ca (oh) 2 = CaCl2+ca (clo) 2+2h2o.
54, in the following description, does not conform to the actual production is ()
A, electrolyzing and melting alumina to prepare metallic aluminum, and taking iron as an anode.
B. electrolytic refining of crude copper with pure copper as cathode.
C, preparing caustic soda by electrolyzing saturated brine, taking nickel-plated carbon steel mesh as cathode.
D, electrodepositing zinc on the electroplated parts, and taking zinc as an anode.
55, the following statement is correct ()
A elemental iodine in iodine water can be extracted by ethanol or carbon tetrachloride.
B. When B.NaCl and SiC crystals melt, the type of overcoming the inter-particle force is the same.
The ratio of the total number of electrons to the total number of neutrons in C.24gMg2S crystal is 1: 1.
The outermost layer of each atom in H2S and SiF4 molecules satisfies the 8-electron structure.
Three, multiple-choice questions (*** 10 questions, each small question has at least two options that meet the meaning of the question, 3 points for each question, ***30 points. 3 points for all choices, 1 point for less choices and correct choices, and 0 point for wrong choices)
56, in the reaction of Na2O2 and water, the statement is correct ().
A.O2 is the oxidation product b, and NaOH is the oxidation product.
C.Na2O2 is an oxidant and water is a reducing agent. In D. Na2O2, oxygen with valence of-1 gains electrons and loses them.
57, tap water can be disinfected with chlorine, students use this tap water to prepare the following substance solution, which will produce obvious drug changes.
The qualitative question is ()
A. silver nitrate B. ferric chloride C. sodium sulfate D. aluminum chloride
58. The structure of organic matter is HO-CH2CH = CHCH2-COOH, and the possible chemical reaction of organic matter is ().
A. Hydrolysis B. Esterification C. Addition D. Oxidation
59, the following statement is correct ()
Sodium acetate, soda ash, hydrochloric acid and quicklime belong to acid, alkali, salt and oxide respectively.
B gasoline, enzyme and cellulose belong to oil, protein and polysaccharide respectively.
C. Dry distillation of coal and fractionation of oil are chemical changes and physical changes respectively.
D dry batteries and rechargeable batteries belong to disposable batteries and secondary batteries respectively.
60. Under the standard conditions, there are: ① 6.72 l CH4 ② 3.0/kloc-0 /×1023 HCl molecule ③ 13.6gH2S ④0.2molNH3.
The following statement about the relationship between these four gases from big to small is correct ()
A. volume: ② > ③ > ① > ④ B. density: ② > ③ > ④ > ①.
C. mass: ② > ③ > ① > ④ D. number of hydrogen atoms: ① > ④ > ③ > ②.
6 1, the following gas-making methods are not desirable in the laboratory ().
A. copper reacts with dilute nitric acid, and no B is collected by drainage. Zinc reacts with dilute nitric acid to produce hydrogen.
C, nitrogen reacts with oxygen to generate NO D, and ammonium chloride is heated to generate ammonia.
62. After the following substances fully react, drop them into the KSCN solution, and the red one is ().
A.FeO+HNO3 (solution) B. Excess iron+dilute sulfuric acid
C..FeCl2 _ 2 _ 2 (solution) +Cl _ 2 D. Fe+CuSO _ 4 (solution)
63, the following four groups of reactions have both precipitation and gas release is ().
A. metal sodium is put into MgSO4 solution, and B. bacl2 reacts with NaHSO4 solution.
C. reaction between baking soda solution and clarified limewater D. reaction between Na2O2 and CuSO4 solution.
64, in 100mL 1mol? Drop 1mol into L- 1 AlCl3 solution? L- 1 NaOH solution to obtain 3.9g of precipitate, and then add it.
The volume of sodium hydroxide solution may be ()
A.150ml b.200ml c.300ml d.350ml.
65, benzene ring actually does not have a simple alternating structure of carbon-carbon single bonds and double bonds, and the fact that it can be used as evidence is ().
Benzene has only one meta-binary substituent.
Benzene has only one ortho binary substituent.
C. Benzene can't change the color of acidic KMnO4 solution.
D. Under the conditions of heating and the presence of catalyst, benzene can be added with chlorine to form cyclohexane.
20 10 chemical simulation of the second grade academic level examination in Guangdong province ii
Reference answer
A, multiple-choice questions Ⅰ (30 questions, 65438+ 0 points for each question, * * 30 points. )
The title is 1 23455 6789 10.
Answer BBB BBA BBA BCD
The title is11213141516171819 20.
Answer d a c a a a b a a a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b
Title 2 1 22 23 24 25 26 27 28 29 30
Answer b d c a a c b d c
Second, multiple-choice question 2 (25 small questions, 2 points for each question, out of 40 points. Among them, 3 1-45 is required, * * 15, 46-55 is multiple choice, * *10; Each candidate chooses a group from the selected questions.
Required questions:
Title 3 1 32 33 34 35 36 37 38 39 40
Answer a a b c a a c d d
Title 4 1 42 43 44 45
Answer a b b a d
Choose to do the problem:
Question 46-50: Corresponding to the content of the module "Chemistry and Life"
Title 46 47 48 49 50
Answer a d c c b
5 1-55 small question: corresponding to the selected content of chemistry and technology module.
Title 5 1 52 53 54 55
Answer d d d c a c
Iii. Multiple-choice questions (* * 10 questions, each small question has at least two options that meet the meaning of the question, with 3 points for each question, * * 30 points for all, 3 points for all, and 0 point for 1 point with few choices and correct choices)
Title 56 57 58 59 60 6 1 62 63 64 65
Answer ad ab BCD CD ABC BCD AC ad ad BC
Is this it? If you like, you can call me again and I will send you other emails.