Maharashtra State Board of Technical Education 2008 Diploma Chemical Engineering Technology Of Inorganic Chemicals - Question Paper

Sample ques. Paper – I
Course Name :- Diploma in Chemical Engineering
Course code :- CH
Semester :- Third
Subject :- Technology Of Inorganic Chemicals
Duration :- three hours Marks : 80


Instructions:
1. All ques. are compulsory.
2. Figures to the right indicate full marks.


Q1. Attempt any 8 16 marks

a. provide 1 advantage based on pollution control of DCDA process Compared to 2 stage conventional process.

b.Give industrial application of Ammonia.

c. Differentiate red Phosphorus and yellow Phosphorus based on their activity.

d.Write overall reaction involved in manufacture of Soda ash by Solvay’s process.

e. provide the temperature at which air is liquefied in Linde’s process.

f. elaborate the raw materials needed for manufacturing of Portland cement?

g.Name 2 methods for separation of Azeotropic mixture of HNO₃.

h.Draw cell notation of mercury cell.

i. Write industrial application of Acetylene.

j. What is Gypsum chemically?


Q2. Attempt any three. 12 marks

a. Draw the diagram of the reactor used for manufacture of NH₃ and mention the subsequent items
1. Pressure 2. Temperature 3. Catalyst 4. Material of construction for storage of catalyst in the reactor.

b.Describe the manufacturing process of Single Super phosphate with diagram and reaction.

c. Draw a simple diagram for conversion of yellow phosphorus to red phosphorus.

d.Describe a manufacturing process of Water gas.


Q3. Attempt any three. 12 marks

a. define the process of settling and hardening of cement.

b.Write reaction involved in manufacture of CO₂ by fermentation.

c. Draw a diagram for manufacture of P₂O₅.

d.What do you mean by N.P.K.? provide an example to clarify by 30- 30- 20 in this situation.


Q4. Attempt any two. 16 marks

a. Draw a flow sheet and define a process for manufacture for Cl₂/ NaOH.

b.Draw a flow sheet and define a process for manufacture of HNO₂ by NH₃ oxidation.

c. Draw a flow sheet and define a process for manufacture of Soda Ash.


Q5 Attempt Any three. 12 marks

a. Write chemical reaction involved in manufacture of triple Super phosphate.

b. define a process for manufacturing of Acetylene by Calcium Carbide.

c. What is the significance of C₂s, C₃s, C₃A, C₄AF in cement?

d. elaborate advantages of mixed fertilizers?


Q6. Attempt any three. 12 marks

a. define the subsequent points with respect to in manufacturing of Urea
1. Temperature
2. Pressure
3. Formation of Biuret
4. Prilling tower.

b. What is the difference in brine solution used for electrolysis in diaphragm cell and mercury cell?

c. How Le Chattaleir’s principle is used in shift of equilibrium in manufacture of H₂SO₄?

d. define manufacturing process of PCl₃ and PCl₅.

Earning:   Approval pending.