Dayal Fertilizers Supervisor Interview Questions and Answers

Q1. Heat exchanger colums reactor
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Q2. Distilation pump reaction
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Q3. Raw materials pressure
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Q1. What is heat transfer type
Ans. 
Heat transfer types include conduction, convection, and radiation.
• Conduction is the transfer of heat through direct contact between objects or substances.

• 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 holding a metal spoon in hot soup.

• Examples of convection include boiling w...read more
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Q2. What is distillation
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Distillation is a process of separating components of a liquid mixture based on their different boiling points.
• Distillation involves heating a liquid mixture to vaporize the more volatile components.

• The vapor is then cooled and condensed back into a liquid, resulting in the separation of the components.

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

• Distillation is commonly us...read more
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What was process and safety knowledge

Q1. Process and safety
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They were happy with my answering of questions related with production.

Q1. Related about handling labour.
Ans. I replied labour was handling with way of talking and cool temper.
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Q2. What safety precaution were used before entering the plant.
Ans. 
Safety precautions before entering the plant included wearing personal protective equipment (PPE) and undergoing safety training.
• Wearing appropriate PPE such as hard hats, safety glasses, gloves, and steel-toed boots

• Undergoing safety training on plant hazards, emergency procedures, and proper use of equipment

• Following specific entry procedures such as sign-in/sign-out protocols and safety checks

• Participating in safety ...read more
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Q3. What type of fire hydrant cylinder use in chemicals fire. Ans mechanical foam cylinder.
Ans. 
Mechanical foam cylinders are commonly used in chemical fires for their ability to quickly suppress flames by forming a blanket of foam.
• Mechanical foam cylinders are effective in suppressing fires involving flammable liquids and chemicals.

• The foam generated by these cylinders helps to smother the fire by cutting off the oxygen supply.

• These cylinders are typically used in industrial settings where there is a higher risk...read more
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Q4. What is the pressure of water in fire hydrant water tank. Ans 7 kg
Ans. 
The pressure of water in a fire hydrant water tank is typically around 7 kg.
• The pressure in a fire hydrant water tank is measured in kilograms per square centimeter (kg/cm^2)

• This pressure is necessary to ensure that water can be quickly and effectively sprayed onto a fire

• The pressure may vary depending on the specific location and regulations
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Q5. What is the moving position of acm mill Ans Anti clock wise.
Ans. 
The moving position of an acm mill is anti-clockwise.
• ACM mill rotates in an anti-clockwise direction to perform milling operations.

• The anti-clockwise rotation helps in achieving the desired milling results.

• It is important to ensure the correct direction of rotation for efficient milling process.
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Q1. Safety question
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Q1. Previous company manufacturing question
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Q1. Salary discussion
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Q1. 1) What is distillation? 2)What are the types of pumps and principal? 3)what are the types of valves and usage? 4)Reactor types and usage?
Ans. 
Distillation is a process of separating components of a liquid mixture based on their different boiling points.
• Distillation is used in industries such as petroleum refining, chemical manufacturing, and alcoholic beverage production.

• There are two main types of distillation: batch distillation and continuous distillation.

• Batch distillation involves heating a mixture in a still and collecting the condensed vapors as separ...read more
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Q2. Types of reaction and their control Cooling tower and types.
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Different types of reactions include exothermic, endothermic, reversible, and irreversible. Cooling towers are used to remove heat from industrial processes.
• Exothermic reactions release heat and require cooling to prevent overheating.

• Endothermic reactions absorb heat and require heating to maintain the reaction.

• Reversible reactions can go in either direction depending on the conditions.

• Irreversible reactions only proce...read more
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Q3. 6) Molarity/molecular weight/Boiling points/melting point/flash point/fire point? 7)LEL-UEL 8)NFPA Diagram? 9) safety permit (hotwork/vessel entry/height work etc) 10)PROCESS FLOW DIAGRAM 11) Vacuum pump?
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Q1. Raults law, daltons law, reynolds no. Transition flow, mccabe thiele method, rectifying, enriching, stripping section, low density & linear low density differences, types of pump & difference in pump & mul...read more
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Q1. Types of valve's! How many type ejector use in Chemical industries? How to work pump? How is it vacuum creat? Which type valve use in steam line? Where is use in gate vale and ball valve? Full form of RTD,...read more
Ans. 
The interviewee is asked about types of valves, ejectors, pumps, vacuum creation, and full forms of RTD and TI.
• Types of valves include gate, ball, butterfly, globe, needle, etc.

• Ejectors are of two types - steam ejectors and water ejectors.

• Pumps work by creating a pressure difference to move fluids.

• Vacuum is created by removing air molecules from a closed space.

• Steam lines use globe valves while ball valves are used in ...read more
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