30+ Gharda Chemicals Limited Interview Questions and Answers

Vacuum is a space devoid of matter or air. It is created when all the air or matter is removed from a given space.

• Vacuum is a state of low pressure or absence of matter.

• It is created by removing all the air or matter from a space.

• Vacuum can be artificially created using vacuum pumps.

• Examples of vacuum include the vacuum inside a vacuum cleaner or the vacuum of space.

LEL stands for Lower Explosive Limit and UEL stands for Upper Explosive Limit.

• LEL is the lowest concentration of a flammable substance in air that can ignite and sustain combustion.

• UEL is the highest concentration of a flammable substance in air that can ignite and sustain combustion.

• The range between LEL and UEL is known as the flammable range or explosive range.

• Operating within the flammable range can lead to fire or explosion.

• For example, gasoline has an LEL of 1.4% and a ...read more

DCS is used for continuous process control while PLC is used for discrete control.

• DCS is used in industries such as oil and gas, chemical, and power plants.

• PLC is used in industries such as manufacturing, automotive, and packaging.

• DCS is designed for controlling continuous processes with multiple variables.

• PLC is designed for controlling discrete processes with on/off control.

• When selecting between DCS and PLC, consider the type of process, the complexity of the control, and ...read more

Distillation is a process of separating 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 collect the separated components.

• I have handled distillation processes in a chemical production plant to separate ethanol from water in a fermentation mixture.

• Monitoring temperature changes, adjusting heating levels, and collecting the distilled components are key aspects of hand...read more

Normality, Molarity, and Molality are different ways to express the concentration of a solution.

• Normality is the number of equivalents of a solute in a liter of solution.

• Molarity is the number of moles of solute in a liter of solution.

• Molality is the number of moles of solute per kilogram of solvent.

Types of pumps include centrifugal pumps, reciprocating pumps, and rotary pumps.

• Centrifugal pumps use centrifugal force to move fluids.

• Reciprocating pumps use a piston or plunger to create pressure.

• Rotary pumps use rotating mechanisms to move fluids.

• Other types of pumps include diaphragm pumps, gear pumps, and peristaltic pumps.

The scope of chemical engineering is vast, encompassing various industries and applications.

• Chemical engineering involves the design, development, and operation of processes and systems that convert raw materials into useful products.

• It is applicable in industries such as pharmaceuticals, petrochemicals, food and beverage, energy, environmental engineering, and more.

• Chemical engineers work on improving efficiency, safety, and sustainability of processes, as well as developing...read more

Fabrication involves the process of creating products or structures through cutting, shaping, and assembling materials.

• Fabrication involves cutting, shaping, and assembling materials to create products or structures

• Common fabrication techniques include welding, machining, and forming

• Materials used in fabrication can range from metals to plastics to composites

• Fabrication plays a crucial role in industries such as manufacturing, construction, and engineering

QAP stands for Quality Assurance Plan, which outlines the procedures and processes to ensure quality in a project.

• QAP is a document that defines the quality standards, procedures, and responsibilities for a project.

• It outlines the quality control measures to be implemented throughout the project lifecycle.

• QAP helps in ensuring that the project meets the required quality standards and customer expectations.

• Examples of QAP elements include quality control checklists, inspection...read more

Total EPC project planning involves creating a detailed plan for the entire project, including scope, schedule, budget, and resources. MS Project WBS is a tool used to break down the project into smaller, manageable tasks.

• EPC project planning involves defining project scope, creating a work breakdown structure (WBS), developing a project schedule, estimating project costs, and identifying project risks.

• MS Project WBS is a hierarchical breakdown of the project into smaller, mo...read more

MSDS stands for Material Safety Data Sheet. It is a document that provides information on the properties of chemicals, how to use them safely, and what to do in case of an emergency.

• MSDS includes information on chemical composition, physical and chemical properties, health hazards, first aid measures, and storage and disposal guidelines.

• It is important for ensuring the safe handling, use, and disposal of chemicals in the workplace.

• MSDS helps workers and emergency personnel to...read more

The fire hydrant system fuel tank capacity should meet the norms set by relevant authorities.

• The capacity of the fuel tank should be in compliance with local fire safety regulations.

• The capacity may vary depending on the size and location of the building.

• Regular inspections and maintenance of the fire hydrant system are necessary to ensure its effectiveness.

Datasheets provide important technical information about components or products.

• Key specifications such as voltage, current, power ratings

• Pinout diagrams and physical dimensions

• Operating temperature range and environmental ratings

• Application notes and recommended usage guidelines

Boiler passing refers to the process of ensuring that the boiler is safe and ready for operation.

• Check all valves and fittings for leaks or damage

• Inspect the boiler's interior for signs of corrosion or damage

• Test the safety controls and alarms

• Check the fuel and water supply

• Perform a pressure test to ensure the boiler can handle the required pressure

• Ensure all necessary permits and certifications are up to date

SQL and SDLC are crucial in software development.

• SQL is a programming language used to manage and manipulate data in relational databases.

• SDLC is a process used to design, develop, test, and deploy software.

• SQL is used in various stages of SDLC such as data modeling, database design, and data manipulation.

• SDLC includes phases like planning, analysis, design, implementation, testing, and maintenance.

• SQL queries are used to retrieve data during testing and maintenance phases of...read more

COPE in chemical engineering stands for Control, Optimization, and Process Engineering.

• COPE involves designing, controlling, and optimizing processes in chemical engineering.

• It focuses on improving efficiency, safety, and sustainability of chemical processes.

• Examples include designing a new chemical reactor, optimizing a distillation process, and controlling a chemical plant operation.

Mag flow meter is not suitable for measuring fluids with low conductivity.

• Mag flow meter requires fluids with a minimum conductivity of 5 microsiemens/cm.

• It cannot measure non-conductive fluids like oils and hydrocarbons.

• It is also not suitable for fluids with high viscosity or those containing solids.

• Mag flow meter may require frequent calibration to maintain accuracy.

• It is relatively expensive compared to other flow meters.

Pipeline marking with TEP involves using temporary marking materials to indicate the location of underground pipes.

• Use temporary marking materials such as flags, paint, or stakes to mark the location of underground pipes

• Ensure that the markings are clearly visible and easily identifiable by others working in the area

• Follow industry standards and regulations for pipeline marking to prevent accidents or damage to the pipes

• Regularly inspect and update the markings as needed to m...read more

Zener diode is a type of diode that allows current to flow in the reverse direction when a certain voltage is reached.

• Zener diodes are heavily doped with impurities to create a narrow depletion region.

• They are used as voltage regulators and in surge protection circuits.

• Zener voltage is the voltage at which the diode starts conducting in reverse direction.

• They have a sharp breakdown voltage and a high power dissipation capability.

• Zener diodes are commonly used in electronic ci...read more

Google Analytics, Adobe Analytics, Mixpanel

• Google Analytics is widely used for website traffic analysis

• Adobe Analytics is popular for tracking user behavior on websites

• Mixpanel is known for its advanced user segmentation and funnel analysis

Distillation is a process of separating components of a liquid mixture based on their different boiling points.

• Distillation involves heating the mixture to vaporize the more volatile components.

• The vapor is then cooled and condensed back into liquid form, separating the components.

• The component with the lower boiling point will condense first and can be collected separately.

• Distillation is commonly used in industries such as oil refining, chemical production, and alcoholic be...read more

Process safety involves identifying, evaluating, and controlling hazards to prevent accidents and ensure safe operations.

• Process safety focuses on preventing accidents and incidents in industrial processes

• Elements of process safety include hazard identification, risk assessment, and risk management

• Examples of process safety elements include process hazard analysis (PHA), safety instrumented systems (SIS), and emergency response plans

Heat transfer is the process of thermal energy transfer between objects or systems.

• Heat transfer is essential in various industrial processes, such as heating, cooling, and drying.

• It plays a crucial role in the design and operation of heat exchangers, boilers, and refrigeration systems.

• Heat transfer can occur through conduction, convection, and radiation.

• Conduction is the transfer of heat through direct contact between objects, like a metal spoon getting hot when placed in ho...read more

The pump characteristics curve shows the relationship between flow rate, head, and efficiency of a pump.

• The curve typically shows how the pump's performance changes with varying flow rates and head pressures.

• It helps in selecting the right pump for a specific application based on required flow rate and head.

• Efficiency of the pump is also depicted on the curve, showing the point of maximum efficiency.

• The curve can be used to troubleshoot pump performance issues by comparing ac...read more

Utilize data analytics to drive sales strategies and decision-making

• Collect and analyze customer data to identify trends and preferences

• Use predictive analytics to forecast sales and optimize promotional strategies

• Implement A/B testing to measure the effectiveness of different sales promotions

• Utilize data visualization tools to present insights in a clear and actionable way

Mass transfer refers to the movement of substances from one place to another in a system.

• Mass transfer is important in various industrial processes such as distillation, absorption, and extraction.

• It involves the transfer of mass or molecules between phases, such as gas-liquid, liquid-liquid, or solid-liquid.

• Mass transfer can occur through various mechanisms including diffusion, convection, and interfacial mass transfer.

• It plays a crucial role in separation processes, where d...read more

PSM elements refer to the key components of Process Safety Management, which are essential for ensuring the safety of processes in industries.

• Process Safety Information (PSI) - gathering and maintaining information on the hazards of processes

• Process Hazard Analysis (PHA) - identifying and evaluating potential hazards in processes

• Operating Procedures - developing and implementing procedures to safely operate processes

• Training - providing training to employees on process safety...read more

Managing company work involves effective delegation, communication, prioritization, and monitoring of tasks.

• Delegate tasks based on team members' strengths and workload

• Communicate clearly about expectations, deadlines, and updates

• Prioritize tasks based on importance and deadlines

• Monitor progress regularly and provide support or guidance as needed

Types of alignment include shaft alignment, belt alignment, and gear alignment.

• Shaft alignment involves aligning the rotating shafts of machines to ensure smooth operation and prevent excessive wear.

• Belt alignment refers to aligning the belts in a system to prevent slippage and maximize power transmission.

• Gear alignment involves aligning the gears in a system to ensure proper meshing and efficient power transmission.

Stages of inspection involve visual inspection, measurement, testing, and documentation.

• Visual inspection: examining the product for any visible defects or irregularities

• Measurement: using tools such as calipers or micrometers to ensure dimensions meet specifications

• Testing: conducting functional tests to verify the product's performance

• Documentation: recording inspection results and any corrective actions taken

Sheffy valve setting is the pressure at which the safety valve of a boiler is set to open and release excess steam.

• Sheffy valve setting is crucial for maintaining safe pressure levels in a boiler.

• It is typically set slightly above the maximum allowable working pressure of the boiler.

• The setting is determined based on the design and capacity of the boiler.

• Regular maintenance and testing of the safety valve is important to ensure it functions properly.

• Improper sheffy valve sett...read more

SQL is a language used to manage relational databases, while Oracle is a relational database management system.

• SQL is a language used to create, modify, and query databases.

• Oracle is a specific relational database management system that uses SQL.

• SQL can be used with other database management systems besides Oracle.

• Oracle has additional features beyond standard SQL, such as PL/SQL for procedural programming.

• SQL is a standard language, while Oracle is a specific product.

• SQL is ...read more

A DOL starter is a Direct-On-Line starter used to start induction motors by directly connecting them to the power supply.

• DOL starters provide full voltage to the motor during starting.

• They are simple in design and cost-effective.

• Commonly used in applications where the motor load is constant and does not require speed control.

• Example: Starting a water pump motor in a residential building.

Vegetable crops are plants cultivated for their edible parts, such as roots, stems, leaves, or fruits.

• Vegetable crops are an essential part of human diets worldwide.

• They provide essential nutrients, vitamins, and minerals.

• Common vegetable crops include tomatoes, carrots, lettuce, broccoli, and peppers.

• They can be grown in home gardens, farms, or greenhouses.

• Vegetable crops require proper soil preparation, watering, and pest control.

• Crop rotation is important to prevent diseas...read more

Safety is a crucial aspect in engineering to prevent accidents and ensure the well-being of individuals.

• Safety protocols should be followed at all times in the workplace

• Regular safety inspections and audits should be conducted

• Proper training and education on safety procedures is essential

• Use of personal protective equipment (PPE) is mandatory in hazardous environments

Expected CTC demand depends on experience, skills, industry standards, and location.

• Consider your level of experience and expertise in the field

• Research industry standards for Polymer Engineers in your area

• Take into account the cost of living in the location of the job

• Factor in any additional skills or certifications that may increase your market value

There are various types of motors including DC motors, AC motors, stepper motors, and servo motors.

• DC motors operate on direct current and are commonly used in household appliances and electric vehicles.

• AC motors operate on alternating current and are used in industrial applications.

• Stepper motors move in precise increments and are commonly used in 3D printers and CNC machines.

• Servo motors are controlled by a feedback mechanism and are used in robotics and automation.