2nd Year Chemistry Chapter 15 Common Chemical Industries in Pakistan MCQs

chemistry 12th notes chapter No 15

1. Micronutrients requirement (per acre) for the normal fertility of soil:


2. Phosphorous helps the growth of:


3. Urea contains about


4. Which of the following elements is not a micro nutrient?


5. White water is:


6. A manure is:


7. Which one of the following fertilizers has maximum manufacturing plants in Pakistan:


8. The natural fertilizer is called:


9. Which is not a calcareous material?


10. Which one of the following raw materials is not used in the cement manufacture:


11. The nitrogenous fertilizer easily taken up by plants is:


12. Which one of the following is woody raw material used for making pulp and  paper:


13. The percent of Nitrogen in Ammonium Nitrate is:


14. Nitrogen helps in:


15. The total production of urea fertilizer in Pakistan is:


16. The percent of lime (CaO) in Portland cement is:


17. What is the main function of rotary kilin:


18. For manufacture of Portland cement main materials are:


19. The percent age gypsum in the cement is:


20. Which non-woody raw material is used for making pulp and paper?


21. The fertilizer that contains largest amount of nitrogen nutrient is:


22. Which sequence of steps is correct for the manufacture of cement?


23. Macronutrients are required for an acre of land in quantity ranging from:


24. The fertilizer which contains 46 percent nitrogen is:


25. Which of the following is woody material:


26. Which fertilizer is widely used in Pakistan:


27. Potassium fertilizers are useful for:


28. Which of the following three elements are largely needed for healthy growth  of plants:


29. Potassium nitrate is prepared by direct reaction between potassium chloride and


30. The nutrients which are required in very small amount for growth of plants  are called:


31. Argillaceous material used for the manufacture of cement provides


32. What is clinker:


33. Point out raw material which is most suitable for manufacturing of urea:


34. Which of the following process is alkaline:


35. Which is not argillaceous material:


36. Which of the following is not calcareous material:


37. Which substance is used as filler or additive in paper making:


38. Which of the following element is not macro-nutrient:


39. In the cement manufacture, the digestor revolves at R.P.M.


40. Which of the following compounds is present in highest percentage in cement:


41. Which one is an organic fertilizer:


42. Argillaceous material in the following is:


43. Which one is a micronutrient?


44. Calendar stock is the stage of paper making where?


45. The percent of gypsum in Portland cement is:


46. Which of the following fertilizers, contains 75 percent nutrient:


47. In cement manufacture, 75 percent Lime stone is used to get:


48. During setting of cement, Tricalcium silicate and tri-calcium aluminate are get hydrolyzed to produce calcium hydroxide and


49. The percent age of nitrogen in urea is:


50. The percent age of nitrogen in NH₄NO₃ is:


51. Which of the following nitrogen fertilizer contains more nitrogen:


52. Which of the following bleaching agents is largely used for bleaching of pulp,  in Pakistan:


53. The percentage of nitrogen in NH₃ is:


54. Which component, if present in paper causes brittleness:


55. Which of the following cannot be used as phosphatic fertilizer:


56. Cement was introduced by a mason:


57. Which of the following fertilizer is not useful for paddy rice:


58. Ammonium nitrate fertilizer is not used for which crops?


59. It is not used in paper and pulp industry:


60. DAP contains P₂O₅ ?


61. Diammonium Phosphate contains:


62. The hottest zone in rotary kiln is:


63. For Chemical pulping, the principal methods used are:


64. Which substance in cement has greater percentage?


65. Which of the following is main process in paper industry:


66. Which one of the following is an organic fertilizers:


67. Which element is often present in all fertilizers:


68. “Rock Phosphate” has composition of:


69. The word paper is derived from reedy plant:


70. Rotary kiln has how many zones:


71. Which of the following is not micro-nutrient:


Short Questions

1. Classify elements essential for plant growth.
2. Define DAP. Write reaction for its preparation.
3. Define paper. Give important raw material for the manufacture for paper?
4. Distinguish micronutrients and macronutrients for plants.
5. Enlist the steps involved in the manufacture of urea.
6. Give any four important (essential) qualities of a good fertilizer.
7. Give any four important qualities of fertilizers.
8. Give different zones in the rotary kiln and their temperature ranges.
9. Give different zones in the rotary kiln and their temperature ranges?
10. Give preparation of Portland cement as carried out by Joseph Aspdin, Why it is named so?
11. Give significance of potash fertilizer?
12. Give the important properties of fertilizer?
13. Give the important qualities of fertilizer.
14. Give the names and formulas of important nitrogenous fertilizers?
15. How ammonium nitrate is prepared? Describe the process.
16. How do you compare the wet and dry process for the manufacture of cement and on what grounds one of them is chosen?
17. How do you define cement? Give the essential constituents of cement?
18. How NH₃ is given to the plants?
19. How paper industry can be made progressive in Pakistan?
20. How potassium nitrate is prepared? Give its composition.
21. How the clinker are converted into cement at the final stage?
22. Mention the cement industry in Pakistan?
23. Mention three important raw materials for the manufacture of cement?
24. Mentrion the paper industry in Pakistan?
25. Name the essential constituents of cement?
26. Name two woody and two non-woody raw materials.
27. What are clinker?
28. What are commonly used bleaching agents in paper manufacture?
29. What are essential nutrient elements? Why are they needed?
30. What are fertilizers?
31. What are fertilizers? Why do we need them?
32. What are macronutrients? Give their names.
33. What are micronutrients?
34. What are micronutrients? Give their names.
35. What are the five steps in the manufacture of Portland cement?
36. What are the important steps for the manufacture of urea?
37. What are the major components of paper machine?
38. What are the properties of ammonium nitrate as a fertilizer?
39. What are the prospects of paper industry in Pakistan?
40. What are the requirements to get high brightness of pulp during paper manufacture?
41. What are the types of phosphorus fertilizers?
42. What do you mean by dry cleaning in paper manufacture?
43. What do you mean by prilling of urea?
44. What do you mean by setting of cement?
45. What is clinker formation?
46. What is di-ammonium hydrogen phosphate? Give it uses.
47. What is historical background of Portland cement?
48. What is lignin?
49. What is N.S.S.C. method for paper manufacture? What physical operations are performed?
50. What is the chemical composition of a good Portland cement?
51. What is the importance of phosphorus for the plants?
52. What is the importance of potassium fertilizer?
53. What is the position of fertilizer in Pakistan?
54. What is the role of rotary kiln in the cement manufacture?
55. What process is carried out during digestion in paper manufacture?
56. What reactions take place in decomposition zone during manufacturing of cement?
57. Which types of woody raw materials are used in paper industry?
58. Why is cement known as Portland cement?
59. Why is industry necessary for a country?
60. Why is there a need for fertilizers?
61. Why lignin is removed from pulp?
62. Why nitrogen is important for plants?
63. Why wet cleaning is done in paper manufacture.
64. Write a note on diammonium phosphate.
65. Write down digestion process for the preparation of pulp.
66. Write down four characteristic features for a good fertilizer.
67. Write down two woody and two non-woody raw materials for paper pulp manufacture.

Long Questions

1. Discuss the six major components of paper making machine.
2. What are Phosphatic fertilizers? How are they prepared. Mention the role of phosphorus in the growth of plants.
3. Define (i) Fertilizers (ii) Pilling. (iii) What is the flow spreader in paper making machine?
4. Explain what do you mean by Fertilizer ?Why fertilizers are needed?
5. What is setting of cement? Explain the reactions taking place in first 24 hours
6. What are fertilizers? Why are they needed?
7. Define micro-nutrients and macro-nutrients. In what range by mass they are needed by plants ?
8. Define paper. Also mention three woody and three non woody raw material for its manufacturing.
9. Describe any six essential qualities of a good fertilizer.
10. How is urea manufactured? Describe with the help of flow sheet diagram.
11. Nitrogenous fertilizer is an important class of fertilizers for crops? Discuss.
12. How urea is manufactured on industrial scale? Give its different steps.
13. What are the common bleaching agents in paper industry in Pakistan? Briefly describe the bleaching process.
14. Discuss the wet process for the manufacture of cement.
15. Describe briefly the Chemistry of manufacturing process of Urea.
16. Describe the different zones of the rotary kiln with temperature in the manufacture of Cement.
17. Write down any six qualitiesof a good fertilizer.
18. Give two reactions which are involved in preparation of Urea fertilizer.
19. How urea is manufactured in the industries. Support your answer with two chemical equations.

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