Chemical Engineering Interview Questions
Questions Answers Views Company eMail

What are some guidelines for sizing a psv for a fire scenario on a vessel in a refinery service?

758

How instrument air is continually supplied in process plant?

656

What are pcbs?

686

Should slurry pipes be sloped during horizontal runs?

576

What types of valves are recommended for slurry services?

606

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

701

For a given bulk solid how can the particle size distribution be determined?

600

What are the main terms in unit operations? What are its characteristics?

611

What does capacitor load means? How does it connect?

559

What are the advantages of using a ball mill over other conventional methods of crushing?

590

What are the steps taken to operate a tank-blanketing valve?

594

What are the factors involved in considering the choice of dry screw compressor?

537

What significance the angle of repose holds in the chemical industry, explain?

603

What is the method involved in analyzing powders for composition?

634

Explain the functioning of a three-way catalytic converter.

688


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Un-Answered Questions { Chemical Engineering }

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.

1483


pls send me model paper of NPCIL for executive trainee. and syllabus of executive trainee 2015.

2285


testing formula for oxygen by ammonium chloride,ammonium hydroxide and copper

522


What are some good strategies for curing tube vibration in shell and tube exchangers?

633


How can you estimate the efficiency of a pump?

619






What is the best way to control an oversized, horizontally oriented shell and tube steam heater?

609


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

634


can you explain about the design calculations and procedure of boiler

2285


What is load?

655


Explain what are some common precipitating agents used to remove metals from aqueous waste streams?

579


Hi, I am Gurunathan. I am in need of ONGC, IOCL, DRDO technical test ( chemical engineering)and general aptitude questions. If anyone has kindly post it to me soon.

2274


Explain what are the disadvantages of using gear pumps?

579


What is a quick way to calculate frictional pressure drops in carbon steel pipe?

567


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.

1825


The job profile as a Service Engineer?

2095