Download SGBAU BSc 2019 Summer 2nd Sem Petrochemical Science Question Paper

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B.Sc. (Part—I) Semester—II Examination

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1. (A) Fill in the blanks :
   1. Indian Petrochemical industry is born around year __________
   2. The complication of gas purification and cost of purification usually increase with __________ of the feed stocks.
   3. Hydrocarbon gases are mostly separated by __________ absorption.
   4. __________ is a general name for a mixture of Hydrogen and Carbon Monoxide.
   (B) Choose correct alternatives :
   1. Unsaturated hydrocarbons increase carbon formation; hence, hydrogen recycling is recommended when high __________ stocks are handled.
      1. Paraffin

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      2. Olefin
      3. Natural gas
      4. None of these
   2. The hypersorber can separate __________ from feed gas.
      1. Propane

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      2. Propylene
      3. Ethylene
      4. Butane
   3. Which process regulates the pollutions by removing the sulfur from tail gases ?
      1. Selexol

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      2. Modop
      3. Sheel
      4. Girbotol
   4. What will happen when feed stock contains water vapours ?
      1. Corrosion

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      2. Formation of crystal
      3. Maligh catalyst
      4. All the above
   (C) Answer in one sentence:
   1. What is the boiling point of methane at 760 mm Hg pressure ?

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   2. Which is a conventional absorbent used to remove the moisture from gasoline ?
   3. Which are the gaseous feed stocks to petrochemical ?
   4. G.S.E.C. stands for ?
2. (A) Describe development of petrochemical industries in India. (6 marks)
   

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   (B) What is HBJ-gas grid ? Discuss in detail. (6 marks)

   OR

3. (P) What is petrochemical ? Describe history of petrochemical industry in detail. (6 marks)
   (Q) Which are the largest and the most ambitious petrochemical complexes in India ? Describe in detail. (6 marks)
4. (A) Why purification of petroleum gas is carried out ? Which techniques are used for removal of impurities present in petroleum gases ? Discuss any one. (6 marks)
   

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   (B) Describe Beavon-Otter process for removal of sulfur compound from petroleum gases with block diagram and process parameters involved. (6 marks)

   OR

5. (P) Water vapour impurities are present in all petroleum gases. How will you remove these impurities from those gases ? Describe in detail. (6 marks)
   (Q) Which feed stocks are used for petrochemical industries ? Discuss with some examples. (6 marks)
6. (A) Describe the role of relative volatility in separation of C₂ Cuts by using absorption-desorption processes. (6 marks)
   

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   (B) Draw and describe process of azeotropic distillation for separation of toluene. (6 marks)

   OR

7. (P) Describe Udex extraction process for separation of aromatic HC from reformates in brief. (12 marks)
8. (A) Describe steam reforming process for production of synthesis gas. (6 marks)
   (B) Describe the reactivity of hydrocarbon for a given steam to hydrocarbon ratio in detail. (6 marks)

   OR

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9. (P) Describe the role of steam and hydrocarbon ratio in steam reforming operation for production of synthesis gas (6 marks)
   (Q) What is steam reforming ? Why this process is adopted for production of synthesis gas ? Describe in detail. (6 marks)
10. (A) What are the different processes for production of synthesis gas ? Explain water gas process for production of synthesis gas. (6 marks)
    (B) What are the types of reformer used in production of synthesis gas by using raw material natural gas and naptha ? Write the composition of material used for reformer construction. (6 marks)

    OR

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11. (P) Draw block diagram for Co-production and describe each unit present in block diagram. (6 marks)
    (Q) Describe Lurgi coal gasification process in detail for production of CO and H₂. (6 marks)
12. (A) Describe in brief low pressure process developed by ICI with respect to process parameter adopted for syn gas synthesis. (8 marks)
    (B) Describe the Vinyl acetate monomer production from synthesis gas. (4 marks)

    OR

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13. (P) What is oxo synthesis ? Describe production of propionaldehyde with respect to their process flow and process parameter. (8 marks)
    (Q) What are the various uses of methanol ? Also write the physical properties of methanal. (4 marks)

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