Chemical Engineering Interview Questions
Questions Answers Views Company eMail

Suppose you have hot fluid and cold water, what fluid you should flow in shell side and tube side in a shell and tube heat exchanger and why

6 10182

What is higher heating value and lower heating value? Is it positive or negative?


Which part of oil creates smoke? ( aliphatic, aromatic, paraffin)

1 4096

Why catalyst is charging in chemical reaction as high pressurized pellet of tablet?

2 3750

What step should be taken in process industries if the process variable is oscillating?



Suppose you have hot oil and cold water, what kind fluid you flow In shell side and tube side and why?

5 6250

Which one is process and why?( evaporation, vaporization, reactor, fluid flow)

5 5766

Which book I should refer for designing heat exchangers and reactors?

1 3242

what is ejector capacity and ejector economy

1 3310

What is the difference between multi grade filter and dual media filter?

Dalkia, Oil and Gas Jobs,

1 15101

Which chemical is used as antiscalent in RO water treatement plant?

Dalkia, Power Plant,

3 10898

What is the difference between coagulation and flocculation in water treatment plant?

1 5892

What are the types of clarifier used in water treatement plant?


1 4195

What are the types of membranes used in RO water treatement plant?

2 7842

What is minimum flow required of NG having BTU value of 920 btu/scf for flame stability of LBTU gas of BTU value 220 BTU/SCF against the flow 80KPPH.


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Un-Answered Questions { Chemical Engineering }

Explain why is post-weld heat treatment (stress relieving) sometimes necessary for welded vessels?


Explain how does a tank-blanketing valve operate?


What is a good source of equations for calculating discharge flowrates from accidental releases?


Explain what are the methods involved to test helium leak testing in a vacuum system?


What is quicklime and what are the uses?


In Pressure Sfety Valve(PSV) 2" by pass line why given for process units.


Explain how can you estimate the efficiency of a pump?


X is strong but has a very low density (1% of traditional earth materials.) and hence light weight. It is a recyclable material. The compression behaviour of X is strain rate dependent. Higher strain rates result in higher initial modulus and higher compression strength. It can also withstand unlimited number of cycling loading provided the repetitive loads are kept below 80% of the compressive strength. The internal structure of the material includes air-traps which make it poor heat conductor. X is non- biodegradable and chemically inert in both soil and water. Most acids and their water solutions do not attack it; however strong oxidizing acids do. Solvents which attack X include esters, ketones, ethers, aromatic and aliphatic hydrocarbons and their emulsions, among others. It does not support bacterial/fungal growth as well .It also has significant acoustic properties and effectively reduces the transmission of airborne sound. X is combustible and should not be exposed to open flame or other ignition sources. Combustion products are carbon monoxide, carbon dioxide, water and soot. Long-term exposure to sunlight causes yellowing and a slight embrittlement of the surface due to ultraviolet light. X is able to withstand the rigours of temperature cycling, assuring long-term performance.


What is the difference between cfm (cubic feet per minute) and scfm (standard cubic feet per minute)?


Can asphalt be recycled to form a useful product?


When specifying a cooling tower, should I look up historic wet bulb temperatures for my area or should I take measurements?


What does the catalytic converter on an automobile really do?


Explain the steps required to design a vapor-liquid separator or flash drum?


The process conditions of the fuel gas are as follows: Temperature = 25 deg C Pressure = 4 bar g Calculate the line size for the fuel gas supply line to the superheater


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