Chemistry Class 10th English Medium Chapter 16 Chemical Industries Notes MCQs Questions Bank

chemistry 10th notes Chapter No 16

1. Which one of the following is used as jet fuel:


2. Which one of the following is not fraction of crude oil?


3. ICI unit was established in:


4. Urea is a compound:


5. Kerosine oil is used as:


6. percentage of Nitrogen in air:


7. When ferrous sulphide reacts with oxygen, it forms:


8. Percentage of nitrogen in urea:


9. Crude oil is heated in the fractionating furnace upto:


10. The process of heating the concentrated ore to a high temperature in the excess of air is called:


11. How many industries came in share of Pakistan:


12. Natural fertilizers practically do not contain:


13. In the bessemerization process:


14. Big industries in India at the time of patrician:


15. Concentration is a


16. These are used as fuel, solvent and lubricants:


17. Ferrous sulphide is oxidized to form


18. Fuel oil boils at:


19. When carbon dioxide is passed through an ammonical solution of NaCl called ammonical brine, _______ precipitates out.


20. Sodium bi carbonate heated to get


21. Quick lime reacts with water to form


22. Urea is used for manufacturing of:


23. The formula of chalcopyrite is:


24. Principle of Solvay’s process lies in the ______ solubility of sodium bicarbonate at _____ temperature.


25. Chalcopyrite is an ore of:


26. Nitrogen react with hydrogen to form ammonia at:


27. Froth fib tation process is used to concentrate the ore on:


28. In Solvay’s process, CaCl₂ solution is a material:


29. Cheap raw material for manufacturing of sodium carbonate is


30. Blister copper is about ______ percent pure.


31. First process involved in metallurgy is


32. The science of extracting metals from ores:


33. The process of removal of gangue from the ore is known as:


34. For the formation of ammonia carbonate CO₂ is passed through:


35. Blister copper contains


36. Molten mixture of Cu₂S.FeS is called


37. Fertilizers urea is used to enhance the:


38. Natural fertilizers improve the structure of:


39. Boiling point of gasoline or petrol is:


40. Urea is a highly soluble in:


41. Formula of baking soda is:


42. Composition of petroleum ether is :


43. In fractional distillation crude oil is heated up to:


44. Formula of urea is:


45. In Solvay’s process slaked lime is used to:


46. The electrolytic refining of copper is carried out in an electrolytic tank having ______ solution.


47. Urea is about used as a fertilizer:


48. Urea is used to make:


49. In electrolytic refining of copper, anode is made up of:


50. Minerals are those solid natural metal which contains:


51. Ammoniacal tower contains:


52. When NaHCO₃ is heated it forms:


53. Sindh alkalies limited were established in:


54. For Electrolytic refining of copper solution is used


55. Blonde hair contains:


56. Example of Ores is:


57. Ammonia is prepared by:


58. Baking soda is chemically sodium:


59. Volume of nitrogen in Haber’s process obtain from:


60. When copper pyrite is heated in the excess of air ______ is/are formed.


61. It is used for bessemerisation of copper


62. Separation of magnetic ore from non magnetic is called


63. Fauji fertilizers contains : percent of market shares:


64. Urea is a fertilizer:


65. Which of the following is not a raw material needed for Solvay’s process?


66. NH₃ and CO₂ are the raw materials of:


67. NaHCO₃ an heating produces :


68. The biggest Fertilizer manufacturer in Pakistan is:


69. Boiling range of fuel oil is :


70. The solid natural materials found beneath the Earth’s surface, which contains compounds of metals in the combined state along with earthly impurities are called:


71. Natural fertilizers are decomposed by:


72. The chemical formula of slaked lime is:


73. Crude oil is separated into _ hydrocarbons:


74. Concentration of copper ore is carried out by:


75. Crops need ______ to grow well.


76. Cause of color of hair is presence of


77. ________ is based on the differences in densities of the metallic ore and the gangue particles.


78. Red hair contains:


79. Brown hair contains:


80. Solvay’s process is a


81. In Solvay process slaked lime or calcium hydroxide Ca(OH)₂ is used to form/recover:


82. Science of extracting metals from ores is called:


83. Slag is chemically:


84. Temperature required for the production of ammonia is:


85. Concentration of.the copper ore is carried out by:


86. Which of the following statement is incorrect about urea?


87. When NaHCO₃ is heated it forms CO₂, H₂O and:


88. The nitrogen present in urea is used by plants to synthesize


89. Cuprous sulphate oxidizes to form


90. Ammonical brine is prepared by dissolving ammonia gas in:


91. Chemical fertilizers release very fastly:


92. Pakistan is self-sufficient for the demand of:


93. Process of removal of Gangue from ore is called:


94. Which one of the followings is not a fraction of petroleum?


95. The formula of cuprous sulphide is:


96. Solvay’s process is


97. They work in metallurgical industry:


98. Urea is nitrogenous fertilizer. It consists of _____ nitrogen.  


99. Sodium carbonate is _ producing in Jhelum:


100. Process of extraction of metal in pure state is:


101. Formula of soda ash is:


102. Sodium hydrogen carbonate decomposes to liberate gas:


103. When crude oil is heated in the fractionating tower:


104. Impurities associated with metal minerals are:


105. Process based on wetting characteristic of ore is called


106. ______ catalyst is used in the preparation of ammonia by Haber’s process.


107. CO₂ and_ _ are recovered & reused in Solvay’s process:


108. Matte is the mixture of:


109. Urea consists of _______ nitrogen


110. Cuprous sulphide and ferrous sulphide form


111. When, CO₂ is passed through the ammonical brine the only salt that


112. Which one of the following organic compound is found in gasoline?


113. There are manufacturing units in Pakistan:


Short Questions

1. Define concentration process used in metallurgy of copper.
2. Define Gangue and Metallurgy.
3. Define metallurgy and list out the basic metallurgical operations.
4. Define Ores. Write the names of any two ores of copper.
5. Define petroleum.
6. Describe Froth flotation process.
7. Describe the difference between diesel oil and fuel oil.
8. Describe the formation of petroleum.
9. Describe the importance of urea.
10. Explain the process of electro-refining.
11. Give the advantages of Solvay’s process.
12. Give the chemical reactions for the formation of metallic copper in bessemerization.
13. Give the reaction of formation of ammonia in the Solvay’s process.
14. Give uses of kerosene oil.
15. How are slag and matte removed from the blast furnace?
16. How is ammonia prepared for the synthesis of Urea? OR How is ammonia prepared by Haber’s process?
17. How is ammonia recovered in Solvay’s process?
18. How is ammonical brine prepared? 
19. How is ammonium carbamate formed?
20. How is carbon dioxide prepared in the Solvay’s process?
21. How is CO₂ prepared in the Solvay’s process?
22. How is NaHCO₃ converted to Na₂CO₃?
23. How is roasting carried out?
24. How is slag formed during smelting?
25. How many stages are involved in the formation of urea?
26. How petroleum is extracted?
27. In how many fractions crude oil is separated?
28. Mention the chemical reactions for the formation of metallic copper in the bessemerization process.
29. Name the compound of interest obtained from Solvay process and make a list of raw material used for Solvay process.
30. Name the various metallurgical operations.
31. What do you know about Urea?
32. What do you mean by a fraction of petroleum?
33. What do you mean by anode mud?
34. What do you mean by calcination?
35. What happens when ammonical brine is carbonated?
36. What happens when ammonical brine is carbonated? Write a balanced chemical equation/s.
37. What happens when ammonium carbamate is heated with steam?
38. What happens when ammonium carbamate is heated with steam?
39. What is ammonical liquor?
40. What is blister copper?
41. What is difference between slag and matte?
42. What is matte?
43. What is meant by anode mud?
44. What is meant by electromagnetic separation?
45. What is meant by roasting of ore? Give an example of such reaction.
46. What is principle of fractional distillation?
47. What is refining of petroleum and how is it carried out?
48. What is residual oil? Write down the names of four fractions obtained by the fractional distillation of residual oil.
49. What is the difference between crude oil and residual oil?
50. What is the difference between Minerals and Ores?
51. What is the difference between slag and matte?
52. What is the percentage of nitrogen in urea?
53. What is the principle of gravity separation?
54. What is the principle of Solvay’s process?        
55. What is the role of pine oil in froth floatation process?
56. When carbon dioxide is passed through the ammonical brine, only sodium bicarbonate precipitates out. Why?
57. Which petroleum fraction is used in dry cleaning?
58. Which raw materials are required for the formation of sodium carbonate?
59. Why a small amount of coke is required in the smelting process? How is slag formed during smelting?
60. Why anode is eaten up in electrorefining process?
61. Why is a small amount of coke required in the smelting process?
62. Why is lime added in the smelting process?
63. Why is the colour of hair different for different people?
64. Why only NaHCO₃ precipitates, when CO₂ is passed through the ammonical brine?
65. Write a note on granulation of urea.
66. Write down the formula of urea and ammonium carbamate.
67. Write down the names of raw material for the manufacturing of urea.
68. Write down the uses of diesel.
69. Write uses of petroleum ether.

Long Questions

1. Define refining. Write a note on fractional distillation of petroleum.  
2. Describe composition and uses of petroleum gas and petrol.
3. Explain electro-refining process of copper.
4. Explain froth floatation process and roasting.
5. Explain the process of electro-refining.
6. Explain the process of smelting with reference to copper.
7. Explain three fractions of petroleum with their uses.
8. How crude oil is refined? Explain two important fractions and uses.
9. How urea is manufactured? Explain showing the flow sheet diagram.
10. State the importance of urea.
11. What is meant by ore? Describe three methods for concentration of ore.
12. Write a detailed note on ammonia Solvay’s process.
13. Write a detailed note on Bessemerization.
14. Write down the important fractions of petroleum.
15. Write the advantages of Solvay’s process.
16. Write the uses of petroleum gas and diesel oil.

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