Section 7 Nitrogenous Fertilizer
Section 7 Nitrogenous Fertilizer
93-CE
1. Which of the following properties apply to sulphur dioxide.
(1) It bleaches dry litmus paper.
(2) It decolorizes bromine water.
(3) It supports the burning of magnesium ribbon.
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
2. Which of the following statements is INCORRECT?
A. Tin is used for making food cans.
B. Sulphuric acid is used for making soap.
C. Ammonium chloride is used for making dry cells.
D. Chlorine is used for sterilizing drinking water.
94-CE
3. Some chlorine water was exposed to sunlight (Diagram A); a gas X was collected after some time (Diagram B).
[pic]
Which of the following statements concerning gas X is correct?
A. It can relight a glowing splint.
B. It has a pungent smell.
C. It can turn wet blue litmus paper red and then white.
D. It can give a 'POP' sound with a burning splint.
4. A solution of chlorine in tetrachloromethane is shaken with an aqueous solution of a compound X in a test tube. On standing, two layers are formed in the test tube and the lower layer is violet in colour. X may be
A. sodium fluoride. B. sodium bromide.
C. sodium iodide. D. sodium sulphite.
95-CE
5. Which of the following is a common use of ammonium nitrate?
A. to cure plant diseases
B. to retard the growth of weeds
C. to increase crop yield
D. to neutralize acidic soil
6. Which of the following statements concerning the Contact process is/are correct?
(1) The sulphur dioxide used in the process can be produced by roasting sulphide ores.
(2) A gaseous mixture of sulphur dioxide and oxygen in the mole ratio of 1 : 2 is passed into the catalytic conversion chamber.
(3) The sulphur trioxide produced is absorbed by water in the absorption tower.
A. (1) only B. (2) only
C. (1) & (3) only D. (2) & (3) only
96-CE
7. Which of the following substances, when mixed, will undergo a reaction?
A. vinegar and anti-acid
B. bleach and anti-acid
C. vinegar and table salt
D. bleach and table salt
8. A gardener bought a bag of potassium nitrate and a bag of ammonium sulphate, to be used as fertilizers. He forgot to label the bags. Which of the following tests would enable him to distinguish between the two chemicals?
A. heating each chemical with dilute sulphuric acid
B. heating each chemical with sodium chloride solution
C. heating each chemical with potassium hydroxide solution
D. heating each chemical with acidified potassium dichromate solution
9. Which of the following statements concerning chlorine is INCORRECT?
A. It can kill germs.
B. It can turn bromine water colourless.
C. It can oxidize iodide ions to iodine molecules.
D. It can be produced by the reaction between dilute sulphuric acid and sodium hypochlorite solution.
10. In which of the following reactions does sulphur dioxide act as a reducing agent?
(1) the production of sulphuric acid in the contact process
(2) the bleaching of a red petal.
(3) the decolorization of bromine water
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
97-CE
11. The following equation represents the reaction of chlorine with dilute sodium hydroxide solution at room temperature:
Cl2(g) + 2NaOH(aq) (
NaCl(aq) + NaClO(aq) + H2O(()
Which of the following statements concerning this reaction is correct?
A. Chlorine is oxidized and sodium hydroxide is reduced.
B. Chlorine is reduced and sodium hydroxide is oxidized.
C. Chlorine is simultaneously oxidized and reduced.
D. Sodium hydroxide is simultaneously oxidized and reduced.
12. Which of the following statements concerning the Haber Process is INCORRECT?
A. Iron is used as a catalyst in the process.
B. The reaction involved in the process is reversible.
C. The reaction involved in the process is exothermic.
D. The process is performed at one atmosphere pressure.
13. Which of the following elements are essential for plant growth?
(1) potassium (2) phosphorus
(3) silicon (4) nitrogen
A. (1), (2) & (3) only B. (1), (2) & (4) only
C. (1), (3) & (4) only D. (2), (3) & (4) only
14. Which of the following substances are used to produce nitric acid in industry?
(1) air (2) water
(3) nitrogen (4) ammonia
A. (1), (2) & (3) only B. (1), (2) & (4) only
C. (1), (3) & (4) only D. (2), (3) & (4) only
15. Which of the following statements concerning the reaction of aqueous ammonia with hydrochloric acid is correct?
A. The reaction is exothermic.
B. A white precipitate is formed.
C. Ammonium chloride and chlorine are produced.
D. The product ammonium chloride is a covalent compound.
98-CE
16. Which of the following steps is NOT included in the Contact Process for the manufacture of sulphuric acid?
A. burning sulphur in air to form sulphur dioxide
B. oxidizing sulphur dioxide to form sulphur trioxide
C. dissolving sulphur trioixde in water to form oleum
D. mixing oleum with water to form concentrated sulphuric acid
17. What is the purpose of adding quicklime (calcium oxide) to soil?
A. to neutralize the acidity of the soil
B. to act as a fertilizer for the soil
C. to kill micro-organisms in the soil
D. to increase the amount of calcium ions in the soil
18. Which of the following combinations is correct?
| |Sulphur dioxide bleach |Chlorine bleach |
|A. |The active ingredient is SO42- |The active ingredient is |
| | |OCl-(aq) |
|B. |It bleaches by oxidation. |It bleaches by reduction. |
|C. |Its bleaching action is faster. |Its bleaching action is |
| | |slower. |
|D. |Its bleaching effect is |Its bleaching effect is |
| |temporary. |relatively long-lasting. |
19. Which of the following substances is / are the main products(s) when a mixture of ammonia and oxygen is passed over red-hot platinum?
(1) nitrogen
(2) nitrogen monoxide
(3) nitric acid
A. (1) only B. (2) only
C. (1) & (3) only D. (2) & (3) only
20. The following information is related to the manufacture of ammonia:
N2(g) + 3H2(g) 2NH3(g) (H < 0
Which of the following statements can be deduced from the above information?
(1) Heat is liberated when ammonia is formed.
(2) Ammonia decomposes to give nitrogen and hydrogen in the reaction chamber.
(3) A catalyst should be used.
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
21. Which of the following experiments would produce sulphur dioxide?
(1) heating iron pyrites in air
(2) heating a mixture of iron and dilute sulphuric acid
(3) heating a mixture of copper and concentrated sulphuric acid
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
22.
[pic]
Which of the following statements concerning the gas produced in the above experiment are correct?
(1) It is toxic.
(2) It is readily soluble in 1,1,1-trichloroethane.
(3) It can turn red litmus solution blue and then colourless.
A. (1) & (2) only B. 1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
99-CE
23. Which of the following statements concerning household bleach is correct?
A. The active ingredient of household bleach is sodium hydroxide.
B. Household bleach is produced by dissolving chlorine in water.
C. Household bleach can be used as a drain opener.
D. The raw material for manufacturing household bleach is sodium chloride.
24. The equation below represents the reaction of chlorine with hot concentrated potassium hydroxide solution:
3Cl2(g) + 6KOH(aq)
( 5KCl(aq) + KClO3(aq) + 3H2O(l)
Which of the following statements concerning this reaction is/are correct?
(1) Potassium hydroxide acts as a reducing agent.
(2) The oxidation number of chlorine changes from 0 to -1.
(3) The oxidation number of chlorine changes from 0 to +5.
A. (1) only B. (2) only
C. (1) & (3) only D. (2) & (3) only
25. Which of the following substances can react with magnesium to give a colourless gas which burns with a 'pop' sound?
(1) grapefruit juice
(2) citric acid crystals
(3) household bleach
A. (1) only B. (2) only
C. (1) & (3) only D. (2) & (3) only
00-CE
26. Manufacturing ammonia by the Haber process involves the reversible reaction:
N2(g) + 3H2(g) 2NH3(g)
Which of the following statements concerning the process is INCORRECT?
A. The forward reaction can go to completion if iron powder is used as a catalyst.
B. The optimum conditions for the process are 500oC and 200 atm.
C. The raw materials are derived from air and water.
D. The forward reaction and backward reaction occur simultaneously.
27. Which of the following solutions can react with bromine water to give a colourless solution?
A. sodium chloride solution
B. sodium sulphite solution
C. sodium iodide solution
D. sodium hypochlorite solution
28. Which of the following processes requires a catalyst?
A. preparation of ethyl ethanoate from ethanoic acid and ethanol.
B. conversion of sulphur trioxide to concentrated sulphuric acid.
C. manufacture of chlorine bleach from brine.
D. reduction of iron(III) oxide to iron.
29. Which of the following processes is endothermic?
A. cracking of petroleum fractions.
B. fermentation of glucose solution.
C. manufacture of ammonia by the Haber process
D. oxidation of sulphur dioxide to sulphur trioxide in the contact process
30. Which of the following uses of sulphuric acid is/are correct?
(1) manufacture of soaps
(2) manufacture of paint additives
(3) manufacture of fertilizers
A. (1) only B. (2) only
C. (1) & (3) only D. (2) & (3) only
31. Which of the following statements concerning carbon, silicon and phosphorus are correct?
(1) Carbon forms numerous compounds with hydrogen and oxygen.
(2) Silicon is used to make computer chips.
(3) Phosphorus is an essential element for plant growth.
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
01-CE
32.
The set-up shown above is best used to collect
A. ammonia B. chlorine
C. nitrogen D. sulphur dioxide
33. In which of the following experiments would a gas be produced?
(1) adding water to a solid mixture of citric acid and sodium hydrogencarbonate.
(2) adding dilute hydrochloric acid to sodium hypochlorite solution
(3) adding chlorine water to potassium iodide solution
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
34. Which of the following are correct descriptions of the uses of sulphuric acid?
(1) treatment of metal surfaces in the electroplating industry
(2) manufacture of paint additives.
(3) manufacture of fertilizers
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
02-CE
35. Which of the following reactions does NOT require the use of a catalyst?
A. conversion of ammonia to nitrogen monoxide
B. hydration of ethene to give ethanol
C. oxidation of ethanol to ethanoic acid
D. fermentation of glucose to give ethanol
36. In a boiler using hard water, scale is deposited on its interior after a period of time. The scale consists mainly of metal carbonates. Which of the following substances can be used to remove the boiler scale?
A. soapless detergent
B. chlorine bleach
C. sodium hydroxide solution
D. vinegar
37. Which of the following statements concerning sodium hydroxide is INCORRECT?
A. It is manufactured by treating sodium with water.
B. Its concentrated solution is corrosive.
C. It is used in the manufacture of soapless detergents.
D. It absorbs carbon dioxide when exposed to air.
38. Which of the following statements concerning the Haber process is INCORRECT?
A. Nitrogen and hydrogen undergo complete reaction in the reaction chamber.
B. Nitrogen and hydrogen are compressed to about 200 atm before they are allowed to undergo reaction.
C. The process is operated at about 500oC.
D. The reaction between nitrogen and hydrogen is exothermic.
39. A part of the flow diagram for the Contact process is shown below:
Which of the following combinations is correct?
X Y Z
A. air water conc. sulphuric acid
B. air conc. sulphuric acid oleum
C. oxygen sulphur trioxide conc. sulphuric acid
D. oxygen water oleum
40. A student heated a mixture of fat and sodium hydroxide solution for some time. He then added the mixture to a beaker of saturated sodium chloride solution. A white solid was formed. Which of the following statements concerning this experiment is/are correct?
(1) The reaction between fat and sodium hydroxide is esterification.
(2) The white solid is a soap
(3) The white solid contains salts of alkanoic acid
A. (1) only B. (2) only
C. (1) & (3) only D. (2) & (3) only
41. Which of the following set-ups can be used to dry moist sulphur dioxide gas?
A. (1) & (2) only B. (1) & (3) only
C. (2) & (3) only D. (1), (2) & (3)
42. When sulphur dioxide is bubbled into water, a colourless solution is formed. Which of the following statements concerning the solution are correct?
(1) The solution conducts electricity better than water.
(2) The solution can change iron(III) sulphate solution from yellow to green.
(3) The solution can change potassium bromide solution from colourless to brown.
A. (1) & (2) only B. (1)& (3) only
C. (2) & (3) only D. (1), (2) & (3)
43. In which of the following is ammonia used?
(1) the manufacture of nitric acid
(2) the making of fertilizers
(3) the making of antiacids
A. (1) & (2) only B. (1)& (3) only
C. (2) & (3) only D. (1), (2) & (3)
Direction : Each question below consists of two statements. Decide whether each of the two statements is true or false; if both are true, then decide whether or not the second statement is a correct explanation of the first statement. Then select one option from A to D according to the following table :
|A. Both statements are true and the 2nd statement is a correct explanation of the 1st statement. |
|B. Both statements are true but the 2nd statement is NOT a correct explanation of the 1st statement. |
|C. Only one statement is true while the other is false. |
|D. Both statement are false. |
| |1st statement | |2nd statement |
| | | | |
|44. |Sulphur dioxide is an oxidizing agent. | |Sulphur dioxide can decolorize bromine water. |
| | | | |
|45. |A flash of lightning causes nitrogen monoxide to be formed in the | |Lightning provides sufficient energy for nitrogen to react with oxygen in |
| |air. | |the air. |
| | | | |
|46. |Adding potassium nitrate to soil can increase crop yield. | |Potassium nitrate can provide the essential elements for plant growth. |
| | | | |
|47. |Chlorine is a better bleaching agent for silk than sulphur dioxide. | |Chlorine bleaches by reduction. |
| | | | |
|48. |Nitrogen monoxide is a gas at room temperature and pressure. | |Nitrogen monoxide is a covalent compound. |
Section 7
|1 |2 |3 |4 |5 |6 |7 |8 |9 |10 | |0+ |C |B |A |C |C |A |A |C |B |D | |10+ |C |D |B |B |A |C |A |D |B |A | |20+ |B |A |D |D |A |A |B |A |A |D | |30+ |D |C |A |D |C |D |A |A |B |D | |41+ |B |A |A |C |A |A |D |B | | | |
-----------------------
[pic]
[pic]
[pic]
[pic]
[pic]
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.