Projects & Development India Limited PDIL conducts interview for recruitment of various posts in the Company.

PDIL Interview Questions

Interview Questions For Chemical Engineering

What is the Driving force for fluid flow?

Pressure drop equation for horizontal pipe line in laminar flow condition?

Pressure drop equation for Inclined pipe line in laminar flow condition?(Inclination by an angle )

Draw the inclined manometer diagram?

Write the pressure drop equation for inclined manometer?

Use of inclined manometer?

What are differences between pipe and tube?

Types of pumps?

Draw the centrifugal pump diagram and show the impeller and fluid flow direction?

Definition of NPSH?

Why cavitation will occur in Centrifugal Pumps?. why not in displacement pumps?

NPSH calculation for suction lift?

NPSH calculation for suction Head?

Determine whether cavitation will occur in the following condition or not? Water at 70 C ,Datum height 5 m (for suction lift condition), & tank is exposed to atm.

Units of viscosity?

Difference between Kinematic viscosity and dynamic viscosity?


Write the forces acting on particle falling in fluid?

How to write particle Nre?

How to calculate particle diameter?

What is minimum fluidization velocity?

How to calculate minimum fluidization velocity?

What is the Driving force for Mass Transfer?

What is the Difference between partial condenser and total condenser?

If column Delta P decreases what happens to the purity?(In this case it is assumed that bottom pressure is constant)

What is the Driving force for Evaporation?

In which column Delta P is high ?(Packed column or tray column)

When we will choose packed column?

What is minimum reflux ratio?

How to calculate minimum reflux ratio?

Draw the x-y diagram?

Explain Me cab thiele method?

Why reaction will takes place?

C + O2 ---------- CO2 when this reaction is feasible?

What are the differences between MFR and PFR?

Write the performance equations for MFR, PFR and Batch Reactors?

A ---k1--- R---k2---- S for the above reaction draw the selectivity diagram when k1 greater than k2 and k1 less than k2?