National Fertilizers Chemical Engineer Interview Questions and Answers

Distillation is a process used to separate mixtures based on differences in boiling points.

• Distillation is used in various industries such as petroleum refining, chemical production, and beverage distillation.

• Types of distillation include simple distillation, fractional distillation, and steam distillation.

• Simple distillation is used to separate liquids with significantly different boiling points.

• Fractional distillatio...read more

Distillation was first described by the ancient Greeks and was further developed by Islamic scholars in the Middle Ages.

• Distillation was first mentioned by the ancient Greek philosopher Aristotle.

• Islamic scholars such as Jabir ibn Hayyan and Al-Kindi made significant advancements in distillation techniques.

• The first detailed description of distillation was provided by the Persian alchemist Muhammad ibn Zakariya al-Razi...read more

An exothermic process is a chemical reaction or process that releases energy in the form of heat.

• Exothermic reactions release heat to the surroundings

• They have a negative change in enthalpy (ΔH)

• Examples include combustion reactions, neutralization reactions, and some oxidation reactions

Pump power is calculated using the affinity law, heat exchanger design involves Kern method, and column diameter changes under pressure and vacuum.

• Pump power is calculated using the affinity law formula: P2/P1 = (N2/N1)^3 * (D2/D1)^5

• Heat exchanger design involves using the Kern method to determine the heat transfer area and overall heat transfer coefficient

• Types of heat exchangers include shell and tube, plate heat exc...read more

Yes, I have experience in commissioning chemical projects.

• I have worked on commissioning a chemical plant for a new production line

• I was involved in the startup and testing of equipment to ensure proper functioning

• I collaborated with a team of engineers to troubleshoot any issues that arose during commissioning