The document discusses various concepts related to chemical process design and engineering including: 1) Reactor design concepts like attainable regions and software packages for design. 2) Process synthesis steps and engineering ethics principles. 3) Approaches for inherently safe chemical plant design. 4) Key terms around materials safety data sheets (MSDS) and occupational safety.

1. Chapter 1, 2, 4, 5, 6
1) Attainable Region concept for reactor design is used for
a) Maximizing desired product formation
b) Maximizing byproduct formation
c) Decreasing operating cost
d) None of these
2) Types of Software packages available for reactor design is,
a) MS Teams
b) AutoCAD
c) ChemCAD
d) Photoshop
3) Reactor design for complex configurations includes,
a) Homogenous isothermal reaction in CSTR
b) Homogenous isothermal reaction in PFR
c) Heterogeneous highly exothermic reaction in multi-stage PFR
d) None of these
4) Step in Process synthesis includes,
a) Eliminate differences in Molecular types
b) Distribute the chemicals by matching source and sinks
c) Eliminate differences in composition
d) All of above
5) Engineering Ethics, which is true?
a) To participate in none but honest enterprise
b) To live and work according to the laws of man and government
c) Using their knowledge and skill for the enhancement
d) All of above
6) Why design approaches towards inherently safe chemical plants?
a) For more safe process operations
b) Achieve zero accident
c) Achieve zero pollution problem
d) None of these
7) MSDS means
a) Moment Safety Delivery System
b) Mechanical Safety Detective System
c) Material Safety Data Sheets
d) None of these
8) MSDS are developed by
a) Industry
b) Chemical Manufacturer
c) Both
d) None of these
9) MSDS are kept under ……. Regulations
a) WHO
b) OSHA
c) DRDO
d) None of these
10) OSHA means
a) Occasional Safety and Health Agency

2. b) Occasional Safety and Health Administration
c) Occasional Social and Health Agency
d) None of these
11) Probably the most well-known cases of chemicals that have been discovered to bio accumulate in the soil and plant
life is/are
a) DDT (dichloro-diphenyl-trichloroethane)
b) PCBs (polychlorinated biphenyls)
c) Both
d) None of these
12) Which of following is not a Mathematical Package Software?
a) MATLAB
b) ChemCAD
c) SCILAB
d) FEMLAB
13) Which of the following is not a Process Simulator?
a) ChemCAD
b) Aspen, HYSYS
c) SuperPro Designer
d) None of these
14) The effect of temperature on the heat of reaction depends on the heat capacities of _______
a. Reactants
b. Products
c. Both Reactants and Products
d. Does not depend on Reactants and Products
15) For a single reaction at isothermal conditions, the volume of a PFR is ______ that of a CSTR for the same conversion
and temperature.
a. Smaller than
b. Larger than
c. Equal to
d. Does not depend to
16) Which of the following is true when considering an exothermic reversible reaction in a PFR
a. Rate of reverse reaction increases rapidly with increasing temperature
b. Rate of reverse reaction is slow at Low temperature
c. Rate of forward reaction is fast at low temperature
d. All of the above
17) The PFR trajectory is expanded by _______, representing mixing between the PFR effluent and the feed stream,
extending the candidate attainable region.
a. Linear Arcs
b. Nonlinear Arcs
c. Straight line
d. Series of points
18) If a PFR trajectory extends the previous AR to form an expanded candidate AR then this trajectory is _______.
a. Concave if drawn where mixing line meets CSTR
b. Convex if drawn where mixing line meets CSTR
c. Depends on mixing line
d. None of the above
19) The maximum attainable region identifies the entire space of _______ concentrations
a. Feasible

3. b. Available
c. Both of the above
d. None of the above
20) In Principle of Reactant Variant, which of the following approach is used
a. One dimensional
b. Two dimensional
c. Three dimensional
d. None of the above
21) The principle of reaction invariants is used to _______ the composition space in systems of larger dimension.
a. Increase
b. Decrease
c. Maintain constant
d. None of the above
22) The PFR trajectory is expanded by linear arcs representing mixing between the _____ and the _____extending the
candidate attainable region.
a. PFR effluent, feed stream
b. PFR effluent, product stream
c. CSTR effluent, feed stream
d. CSTR effluent, product stream
23) For non-catalytic homogeneous reaction which reactor is widely use?
(a) CSTR (b) PFR (C) Fluidized bed reactor (d) none of the above
24) For handling large adiabatic temperature changes which method can be used?
a) Heat-exchanger reactor
b) Use of diluent
c) External heat exchange
d) All of above
25) Cold-shot cooling is also called as......
(a) Direct-contact quench (B) Indirect-contact quench
(c) Direct and indirect contact quench (d) none of the above
26) When the ATR (Adiabatic Temperature Rise) is higher, which of the following method should be used?
(a) Heat-exchanger reactor (b) Use of diluent
(c) External heat exchange (d) Cold-shot cooling
27) Which transfer policies most restrictive policy?
A. zero-wait transfer
B. unlimited intermediate storage (UIS)
C. no-intermediate storage (NIS)
D. None of these.
28) Which transfer units commonly used when no intermediate storage vessel is available or when it cannot be held
further inside the current vessel?
A. zero-wait transfer
B. unlimited intermediate storage (UIS)
C. no-intermediate storage (NIS)
D. None of these.
29) In which transfer policies it is assumed that the batch can be stored without any capacity limit in the storage vessel?
A. zero-wait transfer

4. B. unlimited intermediate storage (UIS)
C. no-intermediate storage (NIS)
D. None of these.
30) Which transfer policies allows the possibility of holding the material inside the vessel?
A. zero-wait transfer
B. unlimited intermediate storage (UIS)
C. no-intermediate storage (NIS)
D. None of these.
31) In which plants all products require all stages following the same sequence of operations?
A. Flow shop plants
B. Job shop plants
C. Both A and B
D. None of these.
32) In which plants where not all products require all stages and/or follow the same sequence?
A. Flow shop plants
B. Job shop plants
C. Both A and B
D. None of these.
33) Batch processes are commonly used to manufacture specialty chemicals with relatively……….
A. Short life cycles.
B. Long life cycles.
C. For both A and B.
D. None of these.
34) Which processes dominant in the chemical process industries for the manufacture of commodity chemicals, plastics,
petroleum products, paper.
A. Batch processes.
B. Continuous processes.
C. Semi continuous processes.
D. None of these.
35) Which is the key design variable in distillation column?
A. Temperature
B. Concentration
C. Pressure
D. All of the above
36) Which of the following is used for transferring energy from lower temperature reservoir to higher temperature
reservoir?
A. Heat engine
B. Heat pump
C. Atomizer
D. All of the above
37) Value of COP for refrigeration system can be……….
A. Equal to 1
B. Greater than 1
C. Less than 1
D. All of the above
38) When working with the composite heating and cooling curves for a process, it helps to examine the heating and
cooling requirements for a distillation column using…..
A. T – S Diagram
B. T – Q Diagram

5. C. P – T Diagram
D. None of the above
39)
Where Qreboiler means heat provided to Reboiler and Qcondenser means heat removed from the condenser
This graph indicates that….
A. Qreboiler > Qcondenser
B. Qreboiler < Qcondenser
C. Qreboiler = Qcondenser
D. None of these
Use following data to answer 40 to 43.
 Consider a plant consisting of two stages that manufactures two products A and B. Demands are 500000
kg/yr for A and 300000 kg/yr for B and the production time considered is 6000 hr. Data for processing
time, size factors and cleanup times are as follows:
Processing Time (hr) Size factors (m3
/kg prod.)
STAGE 1 STAGE 2 STAGE 1 STAGE 2
A 8 3 0.08 0.05
B 6 3 0.09 0.04
CLEANUP TIMES: 4 hrs. A to B & B to A
The production schedule is single product campaigns and length of production cycle is 1000 hr.
40) Over one year the cycle will be repeated ………. Times.
a) 4 times
b) 8 times
c) 6 times
d) None of these
41) Effective time for production in each cycle is
a) 996 hrs
b) 990 hrs
c) 998 hrs
d) 992 hrs
42) Total production time for A and B are respectively
a) 680 hrs and 312 hrs
b) 684 hrs and 308 hrs
c) 308 hrs and 684 hrs
T
Q
T
TReboiler
TCondenser
QReboiler
QCodenser
sink
source

6. d) None of these
43) Largest Volume coming in 1st
and 2nd
Stage are respectively
a) 87.7 m3
and 48.7 m3
b) 80 m3
and 48.7 m3
c) 87.7 m3
and 45 m3
d) None of these
44) Above the pinch which of the following equipment should not be placed
a. Steam heaters
b. Furnaces
c. Coolers
d. Either steam heaters or furnaces
45) Below the pinch which of the following equipments should be placed
a. Steam heaters
b. Furnaces
c. Coolers
d. Either steam heater or furnaces
46) For a minimum utility design select appropriate statements
(a) Do not transfer heat across the pinch
(b) Use hot utility below the pinch
(c) Use cold utility above the pinch
(d) All the above
47) Stream splitting above the pinch takes place when:
a. NH ≥ NC
b. CPH ≥ CPC ( for every pinch match)
c. Both (a) and (b)
d. None of the above.
48) Stream splitting below the pinch takes place when:
a. NH ≥ NC
b. CPH ≥ CPC ( for every pinch match)
c. Both (a) and (b)
d. None of the above.
49) Identify the incorrect statement: “Pinch technology identifies different options leading to ……. ”
(a) Energy savings
(b) Capital savings
(c) Optimal heat exchanger design
(d) Preferred integration alternatives in the interest of given constraints in plant layout, control, safety, etc.
50) The section above the pinch in conventional composite curve is
(a) heat source
(b) heat sink
(c) both
(d) none of these
51) The section below the pinch in conventional composite curve is
(a) heat source
(b) heat sink
(c) both

7. (d) none of these
52) As ∆Tmin→ ∞,
(a) the heat transfer area approaches zero
(b) Utility requirements are reduced to absolute minimum.
(c) both (a) and (b)
(d) None of the above.
53) Minimum number of heat exchanger units is given by Umin = N – 1; where N stands for
a) Total number of process streams in the heat exchanger network
b) Total number of utility streams in the heat exchanger network.
c) Total number of process and utility streams in the heat exchanger network.
d) Difference between process and utility streams in the heat exchanger network.
54) For low temperature processes ∆Tmin should be
a) 10-20°C
b) 3-5°C
c) 20-30°C
d) 10-15°C
55)
Stream T(in), K T(out) ,K F.Cp,
Kw/K
C1 160 400 1.5
C2 100 250 1.3
H1 400 120 1
H2 340 120 2
What will be the minimum value of ‘Qs – Qcw’? Assume ∆Tmin = 10 K
(a) 60 kW.
(b) 165 kW.
(c) 225 kW.
(d) 210 kW.
56) The hot composite curve can be shifted
(a) Horizontally only.
(b) Vertically only
(c) Both horizontally and vertically
(d) Neither horizontally nor vertically.
57) Identify the correct statement.
(a) Minimum cold utility requirement is not a function of ∆ Tmin.
(b) Hot streams are those which need to be heated.
(c) While designing heat exchanger network either number of stream or CP criterion should be satisfied for
pinch match.
(d) The point at which any composite curve experiences change in slope is either the supply or target
temperature of a hot or cold stream.
Use the following HENS process data to answer question number 58 to 61
Stream T(in)
O
C
T(out)
O
C
F.Cp
(kw/ o
C)
C1 60 160 7.62

8. C2 116 260 6.08
H1 160 93 8.79
H2 249 138 10.55
Assume ∆ Tmin = 20 o
C.
58) What will be the cooling duties required?
(a) 188.48 kW.
(b) 250.14 kW.
(c) 127.68 kW.
(d) 310.94 kW.
59) Which stream will not transfer any amount of heat in interval 2?
(a) H1
(b) H2
(c) None of them will transfer.
(d) Both will transfer
60) What will be the total amount of heat absorbed by the both cold streams in interval 3?
(a) 152.4 kW.
(b) 121.6 kW.
(c) 274 kW.
(d) 245. 43 kW.
61) Identify the pinch point temperature with respect to cold temperature?
(a) 180 degree C.
(b) 249 degree C.
(c) 229 degree C.
(d) 160 degree C.
62) The temperature up to which the process stream is to be heated or cooled is _____.
(a) Source temperature
(b) Pinch temperature
(c) Target temperature
(d) None of these
63) _________ is the temperature at which the ability to transfer heat between the process streams is most
constrained.
(a) Source temperature
(b) Pinch temperature
(c) Target temperature
(d) None of these
64) In the grid diagram, the hot stream moves from
(a) Left to right
(b) Right to left
(c) Top to bottom
(d) Bottom to top.
65) Which of the following holds true with respect to pinch point?
(a) Pinch point is dependent upon ∆Tmin of HEN.

9. (b) Above critical ∆Tmin which no pinch exists.
(c) Every heat exchanger network will have pinch point.
(d) Both the heating and cooling utility can be used when there is no pinch point.
66) In the grid diagram, the cold stream moves from
(a) Left to right
(b) Right to left
(c) Top to bottom
(d) Bottom to top.
67) Which is the key parameter used in pinch technology?
(a) Qs
(b) Qcw
(c) ∆ Tmin
(d) None of these
68) ____________ is a plot of the overall variation of heat supply and demand across the entire process.
(a) Hot composite curve
(b) Cold composite curve
(c) Shifted hot composite curve
(d) Grand composite curve
Use the following data to answer question number 69 to 71
Product Stage 1 Stage 2 Stage 3
A 6 4 3
B 3 2 2
Processing Times for Example on Transfer Polices (hrs)
69) What will be the cycle time by using Zero-wait Transfer?
a) 11 hrs
b) 10 hrs
c) 9 hrs
d) None of these
70) What will be the cycle time by using No Intermediate Storage?
a) 11 hrs
b) 10 hrs
c) 9 hrs
d) None of these
71) What will be the cycle time by using No Intermediate Storage?
a) 11 hrs
b) 10 hrs
c) 9 hrs
d) None of these