Chemical Engineer Interview Questions Part 1
1.What is the important properties of biodegradable plastics? Which properties helps plastics to resist water?
2.How does Chromium improve property of Steel when added as an alloy element?
3.Ammonium Thiosulphate is impurity in Ammonium Bi Sulphite. Outline a proper and accurate method of testing this impurity?
4.How can a chemical production engineer improve the process with respect to yield & quality?
5.When salt is added to water, what happens to its freezing point?
6.What are the major characteristics of a metal which distinguishes itself from any other metal?
7.What is the density of water at 0C?
8.What is the life time of FRP tank? Explain about it specifications & other details?
9.Why 'S' sub-shell has a spherical structure?
10.Why Iron Carbide diagram can be established upto 6.67% only? What are structure beyond 6.67% carbon.
11.What is the solid angle?
12.You have two layer of material to provide insulation. They have heat transfer co-efficient (k1>k2).How will you obtain better insulation?
13.What is 3rd Law of Thermodynamics?
14.Explain What is Wilson Equation?
15.How does actual Capillary Action takes place?
16.Why ACTIVITY is so useful than considering PARTIAL PRESSURE in thermodynamics point of view?
17.What is Pointage in Chemistry?
18.Discuss the important properties of solvent used in LEACHING?
19.explain me what is floudas in detail?
20.Difference between Distillation and Fractionation?
21.Why we use Flairing in the crude oil refining industry?
22.How to design knock out drum? (Vertical KOD to remove condensate from natural gas, basic idea of books and related formulae and important notes to remember while designing it)
23.What are the basis for selecting Deaerator operating pressure and temperature?
24.State and explain theorum of the great scholar Appolo Denero,Well known as Appolo Theorm?
25.Explain the designing of distillation column?
26.What is proplan, prodyne?
27.How to design distillation column? What is the role of chemical engg. in technology transfer in pharma company?
28.What is the difference between unit operation and unit process?
29.What is physical significance of chemical potential & fugacity?
30.How to seperate water from benzene?
31.Why the efficiency of multiple effect evaporate is less then single effect evaporater?
32.What is unit operation?
33.What is are the main terms in Unit Operations? and what is its characteristics?
34.Do you have recombinant protein expression experience? Explain?
35.Do you have protein purification experience? Y/N. Please elaborate on the purification techniques?
36.Do you have experience with commercial software for design of experiments? If yes, please elaborate?
37.Do you have antibody design experience?
38.What is microstir?
39.What is Pinch Technology?
40.what is the apt definitions for apparent power ,active power and reactive power?and explanation about different types of lamps?
41.what is the differance between Horizontal and vertical heat exchanger?
42.what is the discharge pressure formula, for calculating discharge pressure?
43.What is the ignition temp. of Alluminium,Coper & Iron?
44.What is the ignititon temperature of Diesel,Petrol & kerosene oil?
45.What is the Import Procurement Cycle ? and what are the customization steps in SAP ?
46.what is the meaning of flaring?
47.What is the most common cause of solid size segregation in bulk solid systems?
48.what is the purpose of capacitor? and capacitor load means what? How does it connect?
49.What is the reason for removing silicon from aluminum?
50.What is the speed of a rotary drier?
51.What is the symbol of sodium ?
52.What is the various utilities of the process plant?
53.What is unit operation?
54.What regulates, or gives a substance the viscosity it has?
55.What steps can be taken to avoid stress corrosion cracking (SCC) in steel vessels used for storing anhydrous ammonia?
56.Which is more effective , a single extraction with a large volume of solvent or several small volume extractions? Explain?
57.Which reformer efficiencywise best?
58.Which thing is responsible for making petroleum?
59.Why is post-weld heat treatment sometimes necessary for welded vessels?
60.Why is steam added into the cracker in thermal cracking?
61.Explain the Deacon reaction?
62.Explain various protein purification techniques?
63.For a centrifugal pump if the pump is running and we close the discharge valve what is the effect?
64.How are plate heat exchangers used in an ammonia refrigeration system?
65.How can we derive power factor equation p=vi cos phi? derivation?
66.How can we measure entropy?
67.How FOULING effectd the heat transfer rate?
68.How much experience you are having in commercial software for protein design?
69.How much maximum power can be generated by 320v, 10kg-cm synchronus motor if shaft is roteted mechanically at 50 to 60 rpm?
70.How to calculat suction head in centrifugal pump?
71.What is the ignition temperance of Diesel,Petrol&kerosion oil?
72.How to calculate the release flowrates from pressurized gas systems?
73.How to calculate the sonic velocity of a gas stream?
74.How to determine the particle size distribution for a given bulk solid?
75.How to estimate the efficiency of a pump?
76.Is it possible to compare the resistance to chloride attack of several materials of construction?
77.Is petroleum a mixture of hydrocarbon?
78.Name of the fraction at which benzene xylene and toulene is obtained during coal tar distillation?
79.What are some good estimates for heat transfer coefficients for coils in tanks?
80.What are the affinity laws associated with dynamics pumps?
81.What are the effects of oils on the properties of Polyolefins?
82.what are the precautions u are taking while starting HT motors?
83.What are the steps involved in wine making?
84.What can cause bulk solids to stop flowing from a bin?
85.What compounds are responsible for the odours that come from wastewater treatment plants?
86.What does the catalystic converter on an automobile do?
87.What is a good estimate for the absolute roughness for epoxy lined carbon steel pipe?
88.What is are the main terms in Unit Operations? and what is its charecteristics?
89.What is difference between Overall heat transfer coeficient & individual heat transfer coefficient?
90.what is load and what are the types of load?
91.what is meaning of pid How it is useing controlers?
92.What are some common causes of gas pipeline vibration 20 Carbon Steel line?
93.While there, are many tests available to detect leaks on vessels, is there a technology available to quantify the leak, or measure the flow through a leak?
94.Is there any way to repair a valve that is passing leaking internally without taking our process offline?
95.When using a pumping loop to mix two miscible fluids in a tank, when can the content are considered well mixed?
96.What are some good uses of low-grade steam at 12 atm and 1920C?
97.What is a good way to get started in doing a plant-wide steam consumption analysis?
98.Are there any general rules for flushing slurry lines?
99.How can you determine the proper pipe thickness for a slurry line?
100.What is the best way to handle bend or turns in slurry piping systems?
101.How can you prevent bridging in a dilute phase pneumatic conveying system?3
102.What is some common piping materials used to transport slurries?
103.What are some common problems associated with dilute phase pneumatic conveying?
104.What is the most common carrier gas used in pneumatic conveying?
105.What types of pneumatic conveying systems are typically used?
106.What is pneumatic conveying?
107.What is the practical particle size limit for pneumatic conveying?
108.What can cause bulk solids to stop flowing from a bin?
109.What is the most common cause of solid size segregation in bulk solid systems?
110.How can one determine the particle size distribution for a given bulk solid?