10+ NACL Industries Interview Questions and Answers

I have handled Honeywell Experion PKS DCS with iOS capacity of 50,000 points.

• I have experience working with Honeywell Experion PKS DCS.

• The iOS capacity of the DCS I handled was 50,000 points.

• I am familiar with the configuration and programming of the DCS.

• I have worked on various projects involving the DCS, including installation, commissioning, and maintenance.

• I have also provided training to operators and maintenance personnel on the use of the DCS.

DCS loops include feedback, feedforward, and cascade loops. Cascade loop involves two or more loops working together.

• Feedback loop: measures output and adjusts input to maintain desired output

• Feedforward loop: anticipates changes in input and adjusts output accordingly

• Cascade loop: involves two or more loops working together to control a process. The output of one loop is used as the setpoint for another loop.

• Example: controlling the temperature of a chemical reactor using a ...read more

I use a variety of instruments in my work as an Executive Chemist, and each instrument requires regular calibration to ensure accurate results.

• Some of the instruments I use include gas chromatographs, mass spectrometers, infrared spectrometers, and atomic absorption spectrometers.

• Calibration is the process of adjusting and verifying the accuracy of an instrument by comparing its measurements to known standards.

• It involves adjusting various parameters such as sensitivity, line...read more

I have handled MSDS of various chemicals including Xylene, Toluene, and Acetone.

• I have experience in reading and interpreting MSDS sheets

• I am aware of the hazards associated with the chemicals I have handled

• I have followed proper safety protocols while handling these chemicals

• Examples of chemicals I have handled include Xylene, Toluene, and Acetone

Installation and troubleshooting of GC and HPLC instruments require technical expertise and attention to detail.

• Proper installation of GC and HPLC instruments is crucial for accurate and reliable results.

• Installation should be done in a clean and stable environment to avoid interference and errors.

• Troubleshooting requires knowledge of the instrument's components and software, as well as common issues and their solutions.

• Regular maintenance and calibration are necessary to ens...read more

PSV is a pressure safety valve used in process industries while PRV is a pressure relief valve used in plumbing and HVAC systems.

• PSV is designed to protect process equipment from overpressure while PRV is designed to protect plumbing and HVAC systems from overpressure.

• PSV is typically set to open at a higher pressure than PRV.

• PSV is usually larger in size than PRV due to the higher flow rates in process industries.

• Examples of PSV applications include oil and gas refineries, c...read more

The type of catalyst used in a hydrogenation reaction depends on the specific reaction conditions and desired outcome.

• Catalysts commonly used in hydrogenation reactions include platinum, palladium, and nickel

• The choice of catalyst can impact reaction rate, selectivity, and overall efficiency

• Different catalysts may be more suitable for specific substrates or reaction conditions

Priority queue is a data structure that stores elements based on their priority.

• Use a binary heap to implement a priority queue.

• Elements are inserted based on priority and removed in order of priority.

• Example: Inserting elements with priority values and removing them in sorted order.

Implement stack and queue using arrays

• For stack, use array and implement push and pop operations

• For queue, use array and implement enqueue and dequeue operations

• Example: Stack - push(1), push(2), pop() -> returns 2

• Example: Queue - enqueue(1), enqueue(2), dequeue() -> returns 1

I have over 5 years of experience in conducting market research for various industries.

• Conducted primary and secondary research to gather market insights

• Analyzed data to identify trends and opportunities

• Prepared reports and presentations to communicate findings

• Worked with cross-functional teams to develop strategies based on research findings