1. Which process/ reaction gives urea with ammonium carbonat
a) Hlogenation b) Dehrdration
c) Hydrolsis d) None of the above
2. Urea as a fertilizer contain
a) 57% N b) 73% N
c) 46% N d) 53% N
3. Ammonium nitrate is a useful fertilizer except for
a) Wheat b) Sugar cane
c) Barley d) Paddy rice
4. The phosphoric acid which is used for the preparation of di ammonium phosphate fertilizer is having 60 to 70oC temperature and
a) PH 5-6 b) PH 5.8 to 6\
c) PH 7-8 d) PH 6 to 7.5
5. Which three elements are needed for the healthy growth of plants
a) N.S.P b) N.Ca.P
c) N.P.K d) N.K.C
6. The nitrogen present in some fertilizer help plants
a. To fight against diseases
b. To produce fat
c. To undergo photosynthesis
d. To produce proteins
7. phosphorus help in the growth of
a) Root b) Leave
c) Stem d) Seed
8. The wood paper is derived from the name of which reedy plant
a) Rose b) Sunflower
c) Papyrus d) Water hyacinth
9. Which is not a calcarous material?
a) Lime b) Clay
c) Marble d) Marine shell
10. Ammonium nitrate fertilizer is not used for which crop
a) Cotton b) Wheat
c) Sugar cane d) Paddy rice
11. Cement is very important building material which was first of all introduce by English Mason Joseph Aspdin in
a) 1875 b) 1824
c) 1860 d) 1920
12. Paper consumption per person in Pakistan is
a) 5kg b) 4kg
c) 6kg d) 8kg
13. The slurry which contains in the making of cement ……% of water
a) 35 to 45 b) 40 to 45
c) 45 to 50 d) None of the given
14. The dried paper is wound in the form of a reel having final moisture of about …….%
a) 6 to 8 b) 4 to 6
c) 2 to 8 d) 5 to 8
15. NH2-CO-NH2is the chemical formula of
a) Ammonia b) Diamino keton
c) Urea d) Both of b and c
16. The fertility of the soil is improved by ______
a. Rotation of the crops
b. Adding lime to the acid salts
c. Adding manure and growing legumes
d. All
17. Which of the following is incorrect statement about nitrogen importance?
a. It enhances plant growth
b. It is involved in the synthesis of protein and nucleic acids
c. It accelerates fruits and flowers growth
d. It is involved in the chlorophyll synthesis
18. The fertilizers, which provide single nutrient from NPK, are called _________fertilizer
a) Straight b) Compound
c) Both a and b d) None of the above
19. Which of the following in macronutrient?
a) Cu b) Cl2
c) H2 d) Zn
20. Addition of urea of the soil is ______________ reaction
a) Endothermic b) Exothermic
c) Both a and b d) No heat energy is involved
21. Which of the following is the most suitable catalyst for ammonia synthesis?
a) Pt b) ZnO + Cr2O3
c) Fe2O3 + MO2O3 d) All of the above
22. The cooling of molten urea by air in the tower is called_________
a) Prilling b) Evaporation
c) Condensation d) Crystallization
23. Which of the following fertilizers is more useful for paddy rice?
a) Urea b) DAP
c) Ammonium sulphate d) Ammonium nitrate
24. DAP (Diammonium hydrogen phosphate) contains _______ PLANT nutrients.
a) 60% b) 65%
c) 70% d) 75%
25. Which of the following potassium fertilizers are more useful for horticultural crops, tobacco & potatoes?
a) KCl b) KNO3
c) K2SO4 d) KMnO4
26. Calcarious material includes___________
a) Lime stone b) Marble
c) Chalk d) All of the above
27. Argillaceous material does not include____________
a) Clay b) Marine shells
c) Slated d) Blast furnace slag
28. Which of the following processes is used for the synthesis of cement?
a) Dry process b) Wet process
c) Both d) None
29. Phosphorus helps in the growth of ________
a) Root b) Leave
c) Stem d) Seed
30. How many zones through which the charge passes in a rotary kiln?
a) 4 b) 3
c) 2 d) 5
31. The nutrients which are required in very small amount for the growth of plants are called.
a. Nitrogenous fertilizers
b. Micronutrients
c. Phosphorus fertilizer
d. Surfactant
32. Which one of the following set of raw material is most suitable for manufacture of urea?
a) CH4, N2and CO2 b) H2, N2 and CO
c) H2, CO2 and H2O d) H2O, N2 and H2
33. Which one of the following statement is correct for urea?
a. It is a synthetic fertilizer
b. It is a natural fertilizer
c. It provides micronutrients to plants
d. It is an inorganic water soluble compound
34. Which on the following is an inorganic fertilizer?
a) 36% b) 46%
c) 56% d) 66%
35. Which one of the following is an inorganic fertilizer?
a) Manure b) Urea
c) Ammonium nitrate d) All
36. There is only one nitrogen fertilizer which is used as liquid is
a) NH4NO3 b) NH4Cl
a) NH3 d) (NH4)2HPO4
37. Except Ca(NO3)2, NaNO3 and KNO3, all nitrogen fertilizers make the soil
a) Acidic b) Basic
c) Neutral d) None of these
38. Which fertilizer contain 82% nitrogen?
a) NH4NO3 b) KNO3
c) NH4Cl d) NH3
39. NH4NO3is used as fertilizer for most crops except
a) Potato b) Sugarcane
c) Paddy rice d) Tobacco
40. The percentage of nitrogen in urea is
a) 40% b) 46%
c) 48% d) 50%
41. Potassium fertilizers are used for
a) Fruits b) Vegetable
c) Tobacco d) All of these
42. From which of the following natural fiber is obtained?
a) Animal b) Vegetable
c) Mineral d) All of these
43. The percentage of nitrogen in ammonia nitrate is
a) 46% b) 33 – 33.5%
c) 82% d) 48%
44. NH4NO3is used as a fertilizer for many crops except paddy rice because
a) Its granules are solid
b) It is poisonous
c) It is neutral
d) The microbial bacteria in flooded field decompose NH4NO3into N2 gas
45. Manufacturing of super phosphate fertilizer involves
a) Six steps b) Five steps
c) Four steps d) Three steps
46. The percentage of P2O5in triple super phosphate fertilizer is
a) 45 – 46% b) 46 – 48%
c) 33 – 35% d) 40%
47. The percentage of nitrogen in ammonium sulphate is
a) 21% b) 25%
c) 46% d) 82%
48. The Stoichiometric ration of CO2/NH3 conversion to urea is about
a) 50% b) 55%
c) 60% d) 65%
49. The chief strength producing constituents of cement is
a) Lime
b) MgO
c) Tricalcium silicate (3CaO.SiO2)
d) All of these
50. Clinker is produced by
a) Wet method b) Dry method
c) Bayer’s method d) Both a & b
51. The final product which is obtained from the rotary kiln (cement production) is called
a) Clinker b) Pulp
c) Fiber d) Polymer
52. The separation of cellulose fibers by mechanical method or by various chemicals from the matrix result into
a) Clinker b) Pulp
c) Polymer d) Isomer
53. The industrial abbreviation of Tricalcium aluminate is
a) C2S b) C3S
c) C3A d) C4AP
54. Super phosphate fertilizer is formed by the
a) Acylation of phosphate rock
b) Alkylation of phosphate rock
c) Acidulation of phosphate rock
d) Aromatization of phosphate rock
55. Natural fertilizers are materials derived from
a) Plants b) Animals
c) Algae d) All of these
56. The fertilizers, which provide single nutrient from NPK, are called _____ fertilizers.
a) Straight b) Compound
c) Both a & b d) None
57. The substances added to the soil in very small amounts (about 6 grams to 200 grams per acre) are called _______
a) Macronutrients b) Micronutrients
c) Fertilizers d) None of these
58. A natural fertilizer provide about ______ kg of nitrogen.
a) 4.5 b) 3.2
c) 2.2 d) 1.5
59. A natural fertilizer provides ______ kg of P2O5
a) 4.5 b) 3.2
c) 2.2 d) 1.5
60. The percentage of nitrogen in ammonium sulphate is _______
a) 32 – 33.5 b) 50 – 55
c) 80 – 82 d) 20 – 25
61. The percentage of sulphur in ammonium sulphate is ______ %.
a) 25 b) 21
c) 23 d) 19
62. Ammonium nitrate is sold as a mixture with
_________
a) Soda Ash b) Limestone
c) Zinc d) None of these
63. Any material, which changes the cleaning
effect of water is called _______
a) Fertilizers b) Detergent
c) Acid d) None of these
64. Commercial detergents contain mainly ______
a) RCOON b) RONa
c) RSNa d) ROSO3Na
65. The principle former of almost all glasses is
________
a) (SiO2)n b) (SiO3)n
c) (SiO2)X d) None of these
66. Calcarious material includes ________
a) Lime stone b) Marble
c) Chalk d) All of the above
67. Cement is a mixture of so many compounds roasted in rotary kiln. Which substances has greater percentage?
a) Lime (CaO) b) Silica (SiO2)
c) Alumina (Al2O3) d) Magnesia (MgO)
68. The important function of burning zone in the
rotary kiln is ______
a) To dry the moisture of slurry
b) To decompose lime stone to unslaked lime
c) Combination of different oxides like CaO2, SiO2, Fe2O3and Al2O3.
d) To reduce the impurities
69. Asbestos is a _______
a) Mineral fiber b) Animal fiber
c) Vegetable fiber d) None of these
