Prasol Chemicals R&D Chemist Interview Questions and Answers

Distillation column, pumps, heat exchangers, reactors, LEL, UEL, fire types, extinguishers, heat transfer, mass transfer

• Types of pumps: centrifugal pumps, positive displacement pumps

• Types of heat exchangers: shell and tube, plate heat exchangers

• Types of reactors: batch reactors, continuous stirred tank reactors

• LEL (Lower Explosive Limit) and UEL (Upper Explosive Limit) are important for safety in handling flammable mat...read more

Distillation is a process used to separate components of a liquid mixture based on differences in boiling points.

• Distillation involves heating a liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, while the components with higher boiling points will remain in the liquid phase.

• Common examples of distill...read more

Developing a data analysis system for a retail company to track sales performance

• Identify key performance indicators (KPIs) such as sales revenue, profit margins, and customer retention rates

• Collect and clean data from various sources including POS systems, online sales platforms, and customer surveys

• Use data visualization tools like Tableau to create interactive dashboards for monitoring sales performance

• Implement pre...read more

One major issue faced during development process was lack of clear requirements.

• Lack of clear requirements led to frequent changes in project scope

• Difficulty in estimating project timelines and resources

• Increased risk of delivering a product that does not meet client expectations

Securing data over the public internet involves using encryption, secure protocols, VPNs, and regular security audits.

• Use encryption to protect data in transit, such as SSL/TLS for websites.

• Implement secure protocols like HTTPS, SSH, and SFTP for secure communication.

• Utilize Virtual Private Networks (VPNs) to create secure tunnels for data transmission.

• Regularly conduct security audits and updates to identify and patch...read more