Gharda Chemicals Limited Executive Production Interview Questions and Answers

DG works as a backup power source during power failure.

• DG stands for Diesel Generator.

• It automatically starts when there is a power failure.

• It provides power to essential equipment and systems.

• It requires regular maintenance and fuel supply.

• Examples of essential systems powered by DG are elevators, emergency lights, and fire alarms.

MSDS stands for Material Safety Data Sheet.

• MSDS provides information about the hazards of a chemical substance.

• It includes information on the composition, physical and chemical properties, health and safety hazards, and emergency procedures.

• MSDS is required by law for all hazardous chemicals used in the workplace.

• It is important to read and understand the MSDS before using a chemical substance.

• MSDS is often available o...read more

Handling chemicals requires proper training, protective gear, and adherence to safety protocols.

• Wear appropriate personal protective equipment (PPE) such as gloves, goggles, and lab coats

• Store chemicals properly in designated areas with clear labeling

• Follow safety protocols and procedures for handling, mixing, and disposing of chemicals

• Be aware of the hazards associated with each chemical and take necessary precautions

• ...read more

Batch charging is the process of charging multiple devices at once.

• Use a charging station with multiple ports

• Ensure the charging station can handle the power requirements of all devices

• Organize devices by type and charging needs

• Set a schedule for charging to avoid overloading circuits

• Consider using smart charging technology to optimize charging speed and efficiency

Polar solvents have a positive and negative end, while nonpolar solvents have no charge.

• Polar solvents dissolve polar solutes and nonpolar solvents dissolve nonpolar solutes.

• Water is a polar solvent, while oil is a nonpolar solvent.

• Polarity is determined by the electronegativity difference between atoms in a molecule.

A fire extinguisher is a device used to control or extinguish small fires. There are different classes of fire extinguishers for different types of fires.

• Fire extinguishers are classified based on the type of fire they can extinguish.

• Class A fire extinguishers are used for fires involving ordinary combustibles like wood, paper, or cloth.

• Class B fire extinguishers are used for fires involving flammable liquids like gaso...read more

Safety valves and rupture discs are important safety devices in production processes.

• Safety valves are designed to release excess pressure in a system to prevent explosions or other hazardous situations.

• Rupture discs are used as a backup to safety valves and are designed to burst at a predetermined pressure to release excess pressure.

• Both safety valves and rupture discs are critical components in ensuring the safety of...read more

Heat exchanger design involves selecting appropriate materials, determining heat transfer coefficients, and optimizing flow rates.

• Consider the type of fluid being used and its properties

• Choose materials that can withstand the temperature and pressure of the fluids

• Calculate the heat transfer coefficients for each fluid

• Optimize the flow rates to maximize heat transfer efficiency

• Consider the overall size and cost of the h

Material balance and energy balance equations are used to track the flow of materials and energy in a system.

• Material balance equation is based on the principle of conservation of mass.

• Energy balance equation is based on the principle of conservation of energy.

• Material balance equation: Input = Output + Accumulation

• Energy balance equation: Input = Output + Storage + Losses

• Example: In a chemical reactor, the material ba...read more

Heat transfer occurs in three modes: conduction, convection, and radiation.

• Conduction is the transfer of heat through a material without any movement of the material itself.

• Convection is the transfer of heat through the movement of fluids or gases.

• Radiation is the transfer of heat through electromagnetic waves.

• Examples of conduction include touching a hot stove or iron, while examples of convection include boiling wate...read more

Centrifugal force is the apparent force that acts outward on a body moving around a center, arising from the body's inertia.

• Centrifugal force is not a real force, but rather a perceived force.

• It is the result of an object's inertia trying to keep it moving in a straight line while it is being forced to move in a circular path.

• Examples include the feeling of being pushed to the side in a car when turning a corner, or th...read more

There are various types of dryers used in production, including rotary dryers, fluidized bed dryers, and spray dryers.

• Rotary dryers use a rotating drum to dry materials.

• Fluidized bed dryers use hot air to suspend and dry materials.

• Spray dryers use a nozzle to spray liquid into a hot air stream, creating a fine powder.

• Other types of dryers include freeze dryers, vacuum dryers, and paddle dryers.

AHU is a part of HVAC system. AHU is a device that circulates air while HVAC is a system that controls temperature, humidity and air quality.

• AHU stands for Air Handling Unit

• AHU is a part of HVAC system

• AHU circulates air while HVAC controls temperature, humidity and air quality

• HVAC stands for Heating, Ventilation and Air Conditioning

• HVAC is a system that provides thermal comfort and acceptable indoor air quality

• Examples...read more