Gujarat Alkalies & Chemicals Interview Questions, Process, and Tips

Q1. Technical and plant process
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Q2. Production planning
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Q3. Technical round and safty
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Q4. Plant process batch process
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Technical for 1 hour

Q1. Bernoulli's equation and its interpretation.
Ans. 
Bernoulli's equation relates the pressure, velocity, and elevation of a fluid in a steady flow.
• Describes the conservation of energy in a fluid flow system

• Equation: P + 0.5 * rho * v^2 + rho * g * h = constant

• Pressure, velocity, and elevation terms are related in the equation

• Used in various engineering applications such as fluid dynamics and aerodynamics
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Q1. Basic Question about Gate rank and background.
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Q1. Questions related to Distillation,Pump and its characteristic curves and a few questions from Heat Exchangers.
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Q1. Mostly asked based on previous experience related to basic of electrical engineering
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Q1. Based on your background going to asked detail question on electrical system
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Q1. Mostly discussed on salary negociation
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Q1. Tell me about your self. What are your goals?
Ans. What are your strengths and weaknesses? Why do you want to work at our company?
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Q2. Give me an example of your creativity.
Ans. What are your career options right now?
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Q3. How much salary do you expect?
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Q1. Related to your field
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Q1. With GACL Managers. + Another State Government Company Manager
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Q1. Family Background + Information about yourself
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Q1. Explain refrigeration cycle.
Ans. 
Refrigeration cycle is a process in which refrigerant absorbs heat from a low-temperature space and rejects it in a high-temperature space.
• Refrigerant absorbs heat from the low-temperature space (evaporator)

• Refrigerant is compressed to increase its temperature and pressure

• High-temperature refrigerant releases heat in the condenser

• Refrigerant expands in the expansion valve to lower its temperature and pressure

• Cycle repe
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Q2. Explain various types of pumps with its characteristics curves
Ans. 
Various types of pumps with characteristics curves
• Centrifugal pumps: high flow rates, low pressure, used in HVAC systems

• Reciprocating pumps: high pressure, low flow rates, used in hydraulic systems

• Diaphragm pumps: positive displacement, used for metering and dosing applications

• Gear pumps: used for lubrication systems, constant flow rate

• Axial flow pumps: high flow rates, low head, used in irrigation systems
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Q3. What is range of cooling tower.
Ans. 
The range of a cooling tower typically varies based on the size and capacity of the unit.
• The range of a cooling tower can vary from small residential units to large industrial units.

• Smaller cooling towers may have a range of a few tons of cooling capacity, while larger industrial cooling towers can have a range of hundreds or even thousands of tons.

• The range of a cooling tower is typically measured in terms of cooling ...read more
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Q4. What is approach of cooling tower.
Ans. 
Cooling towers are heat rejection devices that use water to transfer heat from a system into the atmosphere.
• Cooling towers work on the principle of evaporation to remove heat from the water being circulated through the tower.

• The hot water is pumped to the top of the tower and distributed over the fill or packing, where it is exposed to air.

• As the water flows over the fill, some of it evaporates, which removes heat from...read more
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Q5. Why deaerator is being placed at higher elevation?
Ans. 
Deaerator is placed at higher elevation to create a pressure difference for efficient removal of dissolved gases from feedwater.
• Higher elevation creates a pressure difference which aids in the removal of dissolved gases from feedwater

• This helps in preventing corrosion in the boiler system

• It also improves the efficiency of the boiler by reducing the amount of oxygen in the feedwater
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Q6. What is LP dosing?
Ans. 
LP dosing refers to the process of injecting a low pressure chemical solution into a system or process.
• LP dosing is commonly used in water treatment plants to add chemicals such as chlorine or coagulants to the water supply.

• It is also used in industrial processes to introduce additives or inhibitors into pipelines or equipment.

• LP dosing systems typically consist of a pump, piping, and injection point where the chemical...read more
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Q7. What is stroke length of reciprocating compressor?
Ans. 
Stroke length of a reciprocating compressor is the distance the piston travels from top dead center to bottom dead center.
• Stroke length is an important parameter in determining the displacement volume of the compressor.

• It is typically measured in inches or millimeters.

• For example, a reciprocating compressor with a stroke length of 4 inches will have a piston that travels 4 inches up and down within the cylinder.

• Stroke ...read more
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Q8. What is surging and choking in centrifugal compressor?
Ans. 
Surging and choking are two common operating conditions in centrifugal compressors.
• Surging occurs when the flow rate through the compressor is reduced to the point where the compressor cannot maintain a stable flow and pressure. This leads to a pulsating flow and can cause damage to the compressor.

• Choking happens when the flow rate through the compressor is increased to the point where the compressor cannot handle the ...read more
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Q1. Why do you want to join our company?
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Q2. Why should we hire you?
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Q3. Explain briefly about yourself.
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