10+ Balaji Wafers Interview Questions and Answers

Distillation is a process of separating components of a liquid mixture based on differences in boiling points. Types include simple, fractional, and steam distillation.

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

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

• Simple distillation is used for separating components with significantly different boiling points, w...read more

Human and plant safety is a top priority in our work. We use various safety equipment to ensure a safe working environment.

• Personal protective equipment (PPE) such as hard hats, safety glasses, gloves, and steel-toed boots

• Safety harnesses for working at heights

• Gas detectors for monitoring air quality

• Fire extinguishers and first aid kits for emergencies

• Lockout/tagout devices to prevent accidental start-up of machinery

Distillation is a separation process used in chemical engineering to separate components of a liquid mixture based on their boiling points.

• Distillation is a separation technique used to purify liquids or separate liquid mixtures.

• It relies on the differences in boiling points of the components in the mixture.

• The process involves heating the mixture to vaporize the more volatile component and then condensing it back into a liquid.

• The condensed liquid is collected as the distill...read more

There are various types of safety permits required for plant operations.

• Work permit

• Hot work permit

• Confined space entry permit

• Electrical safety permit

• Lockout/tagout permit

Chemical processes involve the transformation of raw materials into useful products using chemical reactions.

• Examples of chemical processes include distillation, fermentation, and polymerization.

• Valves are commonly used in chemical processes to control the flow of fluids.

• pH is a measure of the acidity or basicity of a solution.

• Types of pumps used in chemical processes include centrifugal pumps, positive displacement pumps, and diaphragm pumps.

Answering questions related to starting pump, two phase flow, control station work, ejector problem and troubleshooting, and vacuum in column.

• To start a pump, ensure that the suction line is filled with liquid and open the discharge valve. Then, turn on the motor and gradually open the suction valve.

• Two phase flow is when both liquid and gas are present in the pipe. This can cause issues with pump performance and require special considerations in design.

• Control stations are u...read more

The density of water is approximately 1 gram per cubic centimeter at 4 degrees Celsius.

• The density of water is 1 g/cm^3 at 4 degrees Celsius.

• Density of water varies with temperature and pressure.

• Water is often used as a reference for density calculations.

Types of pumps include centrifugal, reciprocating, and rotary pumps. Types of valves include gate, globe, ball, and butterfly valves.

• Types of pumps: centrifugal, reciprocating, rotary

• Types of valves: gate, globe, ball, butterfly

• Examples: Centrifugal pump, Gate valve

The interviewer asked about process flow diagram and equipment handling types for the production operator role.

• Process flow diagram is a visual representation of the steps involved in a process.

• Equipment handling types can include manual handling, automated handling, and robotic handling.

• Manual handling involves physically moving equipment by hand.

• Automated handling involves using machinery to move equipment.

• Robotic handling involves using robots to move equipment.

• The type of...read more

Alcohols are organic compounds with hydroxyl (-OH) functional group. Atomic weight varies depending on the type of alcohol.

• Alcohols can be classified as primary, secondary, or tertiary based on the number of carbon atoms attached to the carbon atom with the hydroxyl group.

• Methanol, ethanol, propanol, butanol, pentanol, and hexanol are some common alcohols.

• The atomic weight of alcohols varies depending on the number of carbon and hydrogen atoms present in the molecule.

The required norms of pollution control for MPCB include monitoring and regulating air, water, and noise pollution.

• MPCB sets emission standards for industries and monitors their compliance

• Industries are required to obtain consent to operate from MPCB

• MPCB conducts regular inspections and takes legal action against violators

• MPCB also regulates the disposal of hazardous waste

• Examples of MPCB regulations include the Maharashtra Air (Prevention and Control of Pollution) Rules, 198...read more

ETP process is a method of treating wastewater to remove pollutants before releasing it into the environment.

• Wastewater is collected and screened to remove large debris.

• The water is then treated with chemicals to remove smaller particles and pollutants.

• Biological processes are used to break down organic matter.

• The water is disinfected to kill any remaining bacteria or viruses.

• The treated water is then released into the environment or reused for irrigation or industrial purpos...read more