Download GTU BE/B.Tech 2019 Summer 4th Sem New 2141306 Elements Of Chemical Engg Question Paper

FirstRanker.com

Subject Code: 2141306

SEMESTER-IV(NEW) - EXAMINATION - SUMMER 2019

--- Content provided by​ FirstRanker.com ---

Subject Name: Elements of Chemical Engg

Time: 02:30 PM TO 05:00 PM

Total Marks: 70

Instructions:

1. Attempt all questions.

--- Content provided by​ FirstRanker.com ---

2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. 1. Differentiate between elementary and non-elementary reaction. (03)
   2. Enlist the factors affecting the rate of reaction with example. (04)
   3. Give classification of reactions on the basis of thermodynamics and chemical kinetics. (07)

   --- Content provided by‌ FirstRanker.com ---

2. 1. Write a brief note on parallel reaction. (03)
   2. Define Space-Time and Space-Velocity for flow reactors. (04)
   3. Write a short note on Fixed bed reactor. (07)

   OR

   --- Content provided by​ FirstRanker.com ---

   1. Write a short note on PFR. (03)
   2. Differentiate between performance equations for constant volume batch reactor and varying volume batch reactor. (04)
   3. Discuss advantages and disadvantages of fluidized bed reactor. (07)
3. 1. Derive the mass balance equation for CSTR. (03)

   --- Content provided by⁠ FirstRanker.com ---

   2. Differentiate between order of reaction and molecularity of reaction. (04)
   3. Write a brief note on chemical kinetics. (07)

   OR

   1. Derive the mass balance equation for Batch reactor. (03)
   2. Explain experimental methods for F — curve. (04)

   --- Content provided by‍ FirstRanker.com ---

   3. Milk is pressurized if it is heated to 65°C for 30 min but if it is heated to 72°C, it only needs 15 s for the same result. Find the activation energy of this sterilization process. (07)
4. 1. Explain temperature dependency from Arrhenius’s law. (03)
   2. Explain experimental methods for C — Curve. (04)
   3. At 27°C, a reaction has a rate constant of 0.010s^-1. At What temp, would the reaction be twice as fast? E= 50 KJ/mol. (Assume , Concentration of reactant and E is unchanged.) (07)

   --- Content provided by FirstRanker.com ---

   OR

   1. Explain half life approach for estimating reaction order. (03)
   2. Differentiate between Ideal flow reactor and Non-Ideal flow reactor. (04)
   3. Write a short note on RTD. (07)

--- Content provided by⁠ FirstRanker.com ---

5. 1. Give explanation on temperature dependency from collision theory. (03)
   2. Give the Application of Thermodynamics ‘s law. (04)
   3. Write a short note on measurement of RTD. (07)

   OR

   1. Fkkkthdhh bt (03)

   --- Content provided by‍ FirstRanker.com ---

   2. Enlist & explain the ways to transfer heat. (04)
   3. Write a short note on measurement of RTD. (07)

Date: 09/05/2019

FirstRanker.com

--- Content provided by​ FirstRanker.com ---

GUJARAT TECHNOLOGICAL UNIVERSITY

FirstRanker.com